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CN-122020786-A - Traffic load adaptive periodic pile-arranging foundation vibration attenuation system

CN122020786ACN 122020786 ACN122020786 ACN 122020786ACN-122020786-A

Abstract

The invention discloses a traffic load adaptive type periodic pile-arranging foundation vibration attenuation system, which relates to the technical field of foundation engineering and vibration control and is characterized by comprising a parameter collaborative acquisition module, an integrated topology optimization module, a non-uniform plane and variable-section vertical construction module, a closed-loop detection adjustment module and a closed-loop detection adjustment module, wherein the parameter collaborative acquisition module is used for acquiring traffic load and field condition data to form a standardized data set, the integrated topology optimization module is used for generating pile-arranging layout and section size optimization schemes, the non-uniform plane and variable-section vertical construction module is used for completing accurate construction, the closed-loop detection adjustment module is used for acquiring vibration data and adjusting a non-standard area to form closed-loop control, and the invention integrates traffic load and field data, synchronously optimizes pile-arranging layout and section by means of a topology algorithm, breaks traditional limitation, realizes deep adaptation, builds a full-flow closed-loop system, integrates feasibility and safety, improves vibration reduction accuracy and resource utilization rate, and provides high-efficiency flexible technical support for foundation vibration control of traffic scenes.

Inventors

  • MENG LINGKAI

Assignees

  • 燕山大学

Dates

Publication Date
20260512
Application Date
20260116

Claims (10)

  1. 1. Traffic load adaptation type periodic pile-arranging foundation vibration attenuation system is characterized in that the system comprises: The parameter collaborative acquisition module is used for acquiring the space distribution data of traffic load through the vibration sensor, and acquiring site condition parameters by combining geological radar detection, site mapping and drilling means to form a standardized data set; the integrated topology optimization module is used for importing the data set acquired by the parameter collaborative acquisition module into a topology optimization computing platform, and synchronously optimizing the planar layout of the row piles and the vertical section size by using a topology optimization algorithm with preset conditions as constraints to generate an integrated optimization scheme; The non-uniform plane construction module is used for completing the pile-arranging plane construction of non-uniform lattice arrangement by adopting accurate lofting, regional construction and deviation control means according to the plane layout scheme output by the integrated topology optimization module; the variable cross section vertical construction module is used for carrying out vertical construction on the variable cross section pile body through sectional pore forming, variable cross section switching and quality detection processes according to the vertical cross section size scheme generated by the integrated topology optimization module; And the closed loop detection and adjustment module is used for acquiring vibration data by arranging detection points after pile arrangement construction is completed, comparing the vibration data with a preset target, and performing targeted adjustment on the unqualified area to form closed loop control.
  2. 2. The traffic load adaptive type periodic pile foundation vibration attenuation system is characterized in that three-component piezoelectric vibration sensors are selected for collecting traffic load space distribution data in a parameter collaborative collecting module and fixed on a concrete prefabricated base, the sensors are distributed at intervals along a track in a track traffic scene, the distribution height of the sensors is kept at a fixed distance from the surface of the track, the sensors are respectively distributed at the edges of a lane, a sidewalk and a building red line in a highway traffic scene, the distribution height of the sensors is kept at a fixed distance from the ground, the sampling frequency of the sensors is set according to traffic load vibration characteristics, the collected data comprise vibration acceleration related characteristic parameters and frequency spectrum distribution, and the data are stored according to a standardized format.
  3. 3. The traffic load adaptive type periodic pile foundation vibration attenuation system according to claim 1 is characterized in that in the integrated topology optimization module, a data importing unit, a finite element modeling unit, a constraint condition configuration unit and an optimization scheme output unit are integrated by the topology optimization calculation platform, the data importing unit supports batch importing of CSV, CAD and geological survey special format data, the finite element modeling unit adopts a solid unit to divide a field and a pile area into grids, the grid unit is 0.5mX0.5mX0.5 m, the density of the unit is supported to be adjusted according to geological stratification characteristic difference, the interaction relation between foundation soil and piles can be simulated, the constraint condition configuration unit provides a visual operation interface, constraint thresholds such as material consumption, construction space and structural strength can be set through a parameter input frame, priority ordering and conflict verification of constraint conditions are supported, and the optimization scheme output unit can generate a pile plane coordinate graph, a vertical section size table, a finite element analysis report and a construction guidance file, and output format comprises CAD, PDF and Excel, and requirements of construction and design are met.
  4. 4. The traffic load adaptive type periodic pile foundation vibration attenuation system is characterized in that in the integrated topology optimization module, preset conditions comprise material consumption constraint, construction feasibility constraint and structural safety constraint, wherein the material consumption constraint is specifically that the consumption of pile total concrete and steel bars is lower than or equal to the corresponding consumption of periodic pile adopting fixed spacing and fixed section size in the same protection range, the construction feasibility constraint is specifically that the allowable range of pile spacing is 1.5m to 4.0m, the allowable range of pile section diameter is 0.7m to 1.2m, the ratio of pile spacing to pile section diameter is more than or equal to 1.5, the horizontal spacing between pile position and underground pipeline is at least 1.0m, the horizontal spacing between pile position and building foundation edge is at least 2.0m, and the structural safety constraint is specifically that the resultant force generated by soil pressure and vibration additional stress in each depth section is ensured to be within material allowable stress, and the structural stability of pile under the geological load bearing condition is ensured.
  5. 5. The traffic load adaptive type periodic pile-arranging foundation vibration attenuation system according to claim 1, wherein the integrated topology optimization module synchronously optimizes the pile-arranging plane layout and the vertical section size through a topology optimization algorithm and generates an integrated optimization scheme comprises the following specific processes: firstly preprocessing a data set of a parameter collaborative acquisition module, extracting vibration intensity, energy depth distribution, geology and barrier parameters, then importing the data set into a topology optimization calculation platform, setting a pile plane spacing adjustment range of 1.5-4.0m and a vertical section size adjustment range of 0.7-1.2m, after the topology optimization algorithm initialization parameters are called, firstly iteratively optimizing plane spacing and arrangement mode according to the vibration intensity, then sectionally optimizing the vertical section size by combining the energy depth distribution and the geological parameters, after an intermediate scheme is formed, checking according to preset conditions, outputting an integrated optimization scheme containing plane coordinates and vertical section details when the standard is reached, and returning to adjustment and repeating iterative checking when the standard is not reached.
  6. 6. The traffic load adaptive type periodic pile-arranging foundation vibration damping system according to claim 1, wherein in the integrated topology optimization module, the expression of the topology optimization algorithm is as follows: , wherein, In order to optimize the function of the objective, Is the coordinates The distance between adjacent rows of piles at the position, For the total area of the pile row plane, Is of depth The diameter of the section of the pile body at the position, For the total length of the pile body, Is the first Vibration wave attenuation coefficients corresponding to the detection points, For the total number of detection points, 、 、 All are weight coefficients, the value ranges are all 0.1 to 0.5, and the requirements are met 。
  7. 7. The traffic load adaptive type periodic pile foundation vibration attenuation system is characterized in that in the non-uniform plane construction module, the non-uniform lattice arrangement is characterized in that a plurality of arrangement subareas are defined by taking the distribution of the traffic load vibration intensity of a site as a core basis and combining barrier distribution coordinates, each arrangement subarea adopts a regular triangle or square lattice foundation form, in the subarea with high vibration intensity, lattice unit side lengths are arranged according to 1.8-2.5m, adjacent piles form compact lattice arrangement, the lattice arrangement direction is perpendicular to the vibration wave transmission dominant direction, in the subarea with medium vibration intensity, lattice unit side lengths are arranged according to 2.6-3.4m, standard lattice arrangement is adopted, in the subarea with low vibration intensity, lattice unit side lengths are arranged according to 3.5-4.0m, sparse lattice arrangement is adopted, lattice unit side lengths of the adjacent arrangement subareas are transited according to 0.2-0.3m gradient, pile spacing in the transition area is gradually adjusted, the pitch mutation is avoided, piles are positioned at lattice nodes, in all pile positions need barrier areas, the barrier peripheral edge positions are arranged according to the standard lattice arrangement, and the lattice arrangement cannot be guaranteed to be transited along the arc-shaped arrangement edge.
  8. 8. The traffic load adaptive type periodic pile-arranging foundation vibration attenuation system is characterized in that a construction control network is established by adopting a total station, the point position error of the control network is less than or equal to +/-3 mm, pile positions are marked point by point according to a pile-arranging plane coordinate graph, steel nails are nailed on each pile position, pile numbers are marked, the distance between adjacent pile positions is rechecked by using a steel ruler after the pile positions are lofted, rechecked deviation is less than or equal to 20mm, zoned construction is specifically divided into a high-strength zone, a medium-strength zone and a low-strength zone according to vibration strength, the high-strength zone is preferentially constructed, a pile-jumping mode of one digging is adopted, the hole forming time interval of the adjacent piles is more than or equal to 24 hours, construction interference is avoided, the deviation control is specifically that after the hole forming, the deviation of the center of a hole position is detected by adopting a theodolite, the deviation is less than or equal to 50mm, the verticality of the hole is detected by using an inclinometer, the deviation is less than or equal to 1%, and the construction is re-constructed after the unqualified hole position is backfilled.
  9. 9. The traffic load adaptive type periodic pile foundation vibration attenuation system is characterized in that in the variable cross section vertical construction module, a pile body is divided into continuous construction sections according to a vertical cross section size scheme, each section is 3-5m long, a rotary drilling rig is adopted to drill from top to bottom in a segmented mode, the pore-forming diameter is strictly matched with the cross section size of the corresponding construction section, the mud specific gravity is controlled to be 1.1-1.3g/cm & lt 3 & gt in the drilling process, the drilling speed is kept to be 1-1.5m/min, hole wall disturbance or collapse is avoided, the variable cross section switching is specifically that when drilling is carried out to a variable cross section depth mark, drilling is stopped, slag in a hole is cleaned by adopting a slag scooping barrel, the thickness of the slag is controlled to be less than or equal to 50mm, then a drill bit matched with the next section size is replaced, drilling is continued after the verticality of the drilling rig is recalibrated, the variable cross section transition section is respectively within the range of 0.5m, the pore-forming quality detection process is specifically that after each section is adopted, the pore diameter deviation is detected to be less than or equal to 50mm, the pore diameter deviation is detected by adopting a pore diameter meter, the measuring instrument is less than or equal to 100mm, the pore depth deviation is detected by adopting a nuclear gauge, the slope meter is detected, the reflection deviation is less than or equal to 1 mm, and the complete after the pile body reflection is detected, and the full reflection is less than or equal to 50mm is detected, and the complete, and the full reflection is equal to or lower.
  10. 10. The traffic load adaptive type periodic pile foundation vibration attenuation system is characterized in that in the variable cross-section vertical construction module, when a detection result shows that a non-standard area is insufficient in vibration attenuation due to overlarge pile spacing, miniature piles with the cross-section diameter of 0.6m are repaired at the middle point of an original pile connecting line, the length of the repaired piles is consistent with that of the original piles, a drilling grouting process is adopted for construction, grouting materials are cement paste with the water-cement ratio of 1:1, grouting pressure is more than or equal to 1.5MPa, the horizontal distance between the repaired piles and the original piles is more than or equal to 1m, when the cross-section size of the pile is insufficient, the corresponding pile is subjected to treatment by adopting outsourcing C35 concrete, the outsourcing thickness is more than or equal to 100mm, the outsourcing range completely covers a pile depth section corresponding to the non-standard area, the surface of the original piles is roughened, floating dust is cleaned and is brushed with an interface agent before outsourcing, after construction, maintenance time is not less than 7 days, vibration data are collected again at the original detection points and the new adjustment area, and vibration data are newly confirmed after adjustment is completed.

Description

Traffic load adaptive periodic pile-arranging foundation vibration attenuation system Technical Field The invention relates to the technical field of foundation engineering and vibration control, in particular to a traffic load adaptive type periodic pile-arranging foundation system. Background Along with the continuous construction and operation of traffic infrastructures such as rail traffic, highway traffic and the like, traffic load generated by the traffic infrastructures continuously acts on a foundation, environmental vibration and structural vibration caused by the traffic load are increasingly remarkable, the vibration waves are transmitted through soil bodies of the foundation, additional stress or micro deformation can be generated on adjacent building structures to influence the long-term safety and normal use of the adjacent building structures, meanwhile, the vibration also can interfere living comfort of residents along the line, potential threats are formed on sensitive places such as precise instruments and laboratories in areas, the transmission of the vibration waves is effectively blocked or attenuated, the periodic pile-arranging barrier technology is used as a passive vibration isolation means, and the basic principle is that the transmission of the vibration waves in a specific frequency band is inhibited by arranging periodically arranged piles between vibration sources and protected areas through the wave resistance characteristic of a pile-soil system. However, in practical engineering application, the existing vibration attenuation technology based on periodic pile arrangement faces serious challenges, firstly, traffic vibration load has obvious time-space variability, vibration spectrums, amplitudes and space distribution rules in places generated by different road grades, vehicle types, vehicle speeds and track types are huge in difference, secondly, engineering site conditions are complex and various, including soil layer distribution unevenness, ground water level change, existing underground pipelines or structures and other limiting conditions, the current periodic pile arrangement design generally adopts uniform and fixed pile spacing and equal section pile types, the design mode has obvious limitations that in areas with strong vibration or unfavorable geological conditions, vibration reduction effect cannot reach standards possibly due to insufficient barrier rigidity or density, and in areas with weak vibration or favorable geological conditions, waste in materials and manufacturing cost possibly caused by over conservation of the design, and the economical efficiency is poor. Disclosure of Invention The invention aims to make up the defects of the prior art and provides a traffic load adaptive periodic pile-arranging foundation vibration attenuation system, which is used for acquiring traffic load and site condition data through a parameter collaborative acquisition module; the integrated topology optimization module synchronously optimizes the layout and the section size of the row piles by using a topology algorithm to generate an integrated scheme, the non-uniform plane and variable section vertical construction module respectively completes the accurate construction and section adjustment of the row piles, and finally, the closed loop detection adjustment module collects vibration data and pertinently adjusts the substandard area to form closed loop control so as to effectively attenuate foundation vibration. The invention provides a traffic load adaptive type periodic pile-arranging foundation vibration attenuation system for solving the technical problems, which comprises the following steps: The parameter collaborative acquisition module is used for acquiring the space distribution data of traffic load through the vibration sensor, and acquiring site condition parameters by combining geological radar detection, site mapping and drilling means to form a standardized data set; the integrated topology optimization module is used for importing the data set acquired by the parameter collaborative acquisition module into a topology optimization computing platform, and synchronously optimizing the planar layout of the row piles and the vertical section size by using a topology optimization algorithm with preset conditions as constraints to generate an integrated optimization scheme; The non-uniform plane construction module is used for completing the pile-arranging plane construction of non-uniform lattice arrangement by adopting accurate lofting, regional construction and deviation control means according to the plane layout scheme output by the integrated topology optimization module; the variable cross section vertical construction module is used for carrying out vertical construction on the variable cross section pile body through sectional pore forming, variable cross section switching and quality detection processes according to the vertical cross section size sch