CN-122013770-A - Construction guide frame and method special for large-size retaining wall pile

CN122013770ACN 122013770 ACN122013770 ACN 122013770ACN-122013770-A

Abstract

The invention is suitable for the technical field of construction equipment, and provides a special construction guide frame and a method for a large-size retaining pile, wherein the special construction guide frame comprises a bottom plate, a fixed seat, an X-axis limiting cylinder, a bearing bracket and a Y-axis limiting seat; the bottom plates are arranged in parallel, the fixing seats are welded and fixed between one ends of the two adjacent bottom plates, a 匚 -shaped structure is formed by the fixing seats and the bottom plates, one end of the X-axis limiting cylinder is fixed with the fixing seats, the two fixing seats are arranged in parallel and are arranged in parallel with the bottom plates, the bearing seat is fixed at the other end of the X-axis limiting cylinder, and the Y-axis limiting seat is slidably clamped on the two adjacent X-axis limiting cylinders. In this scheme constitute through bottom plate and fixing base and stabilize 匚 shape basis, utilize two spacing section of thick bamboo of X axle to follow the spacing dado stake of X axle direction, cooperate Y axle spacing seat and slide bar to follow Y axle direction butt dado stake, form X, Y biax accurate direction limit structure, avoid the pile body crooked from construction source, overall structure equipment is firm, the simple operation, need not to rework and can ensure pile body straightness that hangs down.

Inventors

WU XIAOLONG
Zeng Haorui
HUANG YUQIANG
YUAN JING
LIU JIEMING
LI PEISHENG
YANG FEIHU
LIU JUNPENG
Zhang Zhuocong
HUANG WENBIN
CHEN WEIJIE
ZHANG JIAHAO

Assignees

广东省源天工程有限公司

Dates

Publication Date: 20260512
Application Date: 20251204

Claims (10)

1. The special construction guide frame for the large-size retaining pile is characterized by comprising a bottom plate (1), a fixed seat (2), an X-axis limiting cylinder (3), a bearing bracket (4) and a Y-axis limiting seat (5); the two base plates (1) are arranged in parallel, the fixed seats (2) are welded and fixed between one ends of the two adjacent base plates (1) and form a 匚 -shaped structure together with the base plates (1), one end of the X-axis limiting cylinder (3) is fixed with the fixed seats (2), the two base plates are arranged in parallel and are arranged in parallel with the base plates (1), the bearing bracket (4) is fixed at the other end of the X-axis limiting cylinder (3), and the Y-axis limiting seat (5) is in sliding clamping connection with the two adjacent X-axis limiting cylinders (3); The top of supporting seat (4) is fixed with spacing frame (6), spacing frame (6) is parallel with spacing section of thick bamboo of X axle (3), and is located the center department between two adjacent spacing section of thick bamboo of X axle (3), sliding connection has sliding rod (7) in spacing frame (6), Y axle spacing seat (5) and sliding rod (7) are along Y axle direction in dado stake butt, adjacent two spacing section of thick bamboo of X axle (3) are along X axle direction and dado stake butt.
2. The special construction guide frame for the large-size retaining pile according to claim 1, wherein a first air cylinder (8) is fixed at the top of the limiting frame (6), a telescopic part of the first air cylinder (8) is fixed with a sliding rod (7), a second air cylinder (9) is fixed on the fixing base (2), and a telescopic part of the second air cylinder (9) is fixed with the Y-axis limiting base (5).
3. The special construction guide frame for the large-size wall protection pile according to claim 1, wherein one ends, close to each other, of the Y-axis limiting seat (5) and the sliding rod (7) are respectively connected with a first abutting roller (10) and a second abutting roller (11) in a rotating mode, and the first abutting roller (10) and the second abutting roller (11) are in rolling abutting connection with the wall protection pile.
4. The special construction guide frame for the large-size retaining pile according to claim 1, wherein the bearing seat (4) is of a 匚 -shaped structure, a 匚 groove opening is positioned between two adjacent X-axis limiting cylinders (3), reference support rods (12) are symmetrically fixed on two sides of the bearing seat (4), and the reference support rods (12) are positioned at the tops of 匚 groove openings and are abutted to the tops of the retaining pile after construction is completed.
5. The special construction guide frame for the large-size retaining wall pile, as claimed in claim 1, is characterized in that a movable roller (13) is arranged at the bottom of the bottom plate (1), the movable roller (13) is in rolling contact between the ground and the bottom plate (1), hanging lugs (14) are fixed at two ends of the top of a Y-axis limiting seat (5), and the Y-axis limiting seat (5) is connected with an external dragging steel wire rope through the hanging lugs (14); the Y-axis limiting seat (5) is provided with a guide hole (15) in a penetrating mode, the X-axis limiting cylinder (3) is in sliding fit in the guide hole (15), clamping grooves (16) are formed in the two sides of the Y-axis limiting seat (5) in a concave mode, the clamping grooves (16) are of 匚 -shaped structures, and the bottom plate (1) is in sliding fit in the clamping grooves (16).
6. A method for adjusting a construction guide frame special for a large-size wall protection pile, which is applied to the construction guide frame special for the large-size wall protection pile according to any one of claims 1 to 5, and is characterized by comprising the following steps: The method comprises the steps of collecting real-time sensing data of a guide frame and a pile body by utilizing a multidimensional sensing and state mapping unit, and carrying out feature reconstruction on the real-time sensing data to obtain an environment state feature vector by mapping; Calculating a lateral shear stress accumulation index according to the historical stress data sequence and the high-frequency vibration characteristic data in the environmental state characteristic vector by using a stress accumulation risk assessment unit; Comparing the lateral shearing stress accumulation index with a dynamic safety threshold value by using the stress accumulation risk assessment unit to generate a stress safety margin signal; The dynamic game strategy generating unit is used for receiving the environmental state feature vector and the stress safety margin signal, and constructing a comprehensive objective function based on a multi-objective optimization theory; Dynamically adjusting a weighting coefficient in the comprehensive objective function according to the stress safety margin signal by using the dynamic game strategy generation unit, and solving the comprehensive objective function to generate a target constraint force set value and a target gesture track; The robust execution compensation unit is utilized to receive the target constraint force set value and the target attitude track, calculate compensation quantity by combining with real-time pressure feedback of a hydraulic system and output a final driving signal; And responding to the final driving signal by utilizing the multi-degree-of-freedom guide frame executing mechanism, and driving the hydraulic adjusting component to apply physical constraint force and guide force to the retaining pile.
7. The method for adjusting construction guide frames special for large-size retaining piles according to claim 6, wherein the steps of utilizing the multidimensional sensing and state mapping unit to collect real-time sensing data of the guide frames and the pile bodies and carrying out feature reconstruction on the real-time sensing data to obtain environment state feature vectors through mapping comprise the steps of: Collecting force sensor data, inclination sensor data, hydraulic system pressure data and vibration frequency data as the real-time sensing data; Denoising the real-time sensing data; extracting a difference change rate of the force sensor data; Extracting instantaneous fluctuation peak values of the pressure data of the hydraulic system; and mapping the difference change rate and the instantaneous fluctuation peak value into the environmental state feature vector, wherein the environmental state feature vector comprises pile body attitude deviation degree, geological friction resistance feature and guide frame mechanical response hysteresis.
8. The method for adjusting a construction guide frame special for a large-size retaining pile according to claim 6, wherein the calculating a lateral shear stress accumulation index by using a stress accumulation risk assessment unit according to a historical stress data sequence and high-frequency vibration characteristic data in the environmental state characteristic vector comprises: Based on a fatigue damage accumulation theory, obtaining stress amplitude values in the historical stress data sequence; Performing integral operation on the fourth power of the stress amplitude and the cycle times to obtain the lateral shear stress accumulation index; The comparing the lateral shear stress accumulation index with a dynamic safety threshold to generate a stress safety margin signal comprises: Obtaining pile body material parameters, current soil penetration depth and soil layer hardness coefficients; Weighting calculation is carried out according to the pile body material parameters, the current soil penetration depth and the soil layer hardness coefficient, so that the dynamic safety threshold value is obtained; Generating said stress safety margin signal of reduced value in the event that said lateral shear stress accumulation index is above said dynamic safety threshold.
9. The method for adjusting a construction guide frame special for a large-size retaining pile according to claim 6, wherein the constructing a comprehensive objective function based on a multi-objective optimization theory comprises: Determining a position error cost term, wherein the position error cost term is used for representing construction precision; determining an entry efficiency cost term, wherein the entry efficiency cost term is used for representing the construction speed; determining a constraint force acting cost item, wherein the constraint force acting cost item is used for representing impact on a pile body; and constructing the comprehensive objective function according to the position error cost item, the soil penetrating efficiency cost item and the constraint force acting cost item.
10. The method for adjusting a construction guide frame special for a large-sized retaining pile according to claim 9, wherein dynamically adjusting the weighting coefficients in the integrated objective function according to the stress safety margin signal comprises: establishing a nonlinear mapping relation between the stress safety margin signal and the weighting coefficient; When the value of the stress safety margin signal is lower than a preset alarm line, exponentially increasing the safety class weight corresponding to the constraint force acting cost item through the nonlinear mapping relation; simultaneously reducing the efficiency class weights corresponding to the position error cost item and the soil-entering efficiency cost item; reducing the safety class weight and improving the efficiency class weight under the condition that the value of the stress safety margin signal is risen to a safety interval; The robust execution compensation unit receives the target constraint force set value and the target attitude track, calculates a compensation amount by combining real-time pressure feedback of a hydraulic system, and outputs a final driving signal, and the method comprises the following steps: calling a dynamics inverse model of the hydraulic system; comparing the target constraint force set value, the target gesture track and the real-time pressure feedback; Calculating the compensation quantity for correcting the physical response lag and dead zone of the hydraulic system based on the hydraulic system dynamics inverse model; under the condition that external high-frequency disturbance is detected, the opening degree of the hydraulic valve is finely adjusted to absorb high-frequency vibration; Combining the compensation quantity and the finely-adjusted hydraulic valve opening degree to generate the final driving signal; The utilization of the multiple freedom guide frame executing mechanism, responding to the final driving signal, drives the hydraulic adjusting component to apply physical constraint force and guiding force to the retaining wall pile, comprises: Receiving the final drive signal; driving an adjustment unit to define lateral displacement of the retaining pile; driving the hydraulic telescoping unit to provide a telescoping pilot holding force; and the posture of the pile body is adjusted through the combined action of the adjusting unit and the hydraulic telescopic unit.

Description

Construction guide frame and method special for large-size retaining wall pile Technical Field The invention belongs to the technical field of construction equipment, and particularly relates to a special construction guide frame and a method for a large-size retaining pile. Background In heavy engineering projects such as building foundation engineering, side slope support and foundation pit protection, a large-size retaining wall pile becomes a core stress member for resisting side slope collapse and guaranteeing construction safety by virtue of excellent foundation pit side wall protection capability and structural stability, and is widely applied to scenes with severe requirements on construction precision such as high side slope treatment and large-scale building foundation pit support. However, in the construction process of the current large-size retaining pile, the existing construction system lacks special guiding equipment for adapting the large-size retaining pile, so that the skew problem is difficult to prevent, and a convenient deviation rectifying means is lacking after the skew problem occurs, because the pile body of the large-size retaining pile is large in size and high in dead weight, once the skew exceeding standard is detected after the pile body is formed, the accurate rectification cannot be realized through local repair, the processing of wholly pulling out and re-pore-forming pouring in a reworking mode can only be adopted, the reworking can not only cause serious waste of a large amount of building materials such as concrete and steel bars, but also greatly prolong the construction period, increase additional cost such as mechanical lease and manual investment, in addition, the repeated pile pulling and re-drilling processes can also disturb surrounding stratum structures, damage the stability of pore walls, cause secondary problems such as slumping and pore wall protrusions, not only further promote construction difficulty, but also can produce sedimentation influence on surrounding existing structures, and buried potential safety hazards. Along with the expansion of the engineering scale of the deep foundation pit, the construction environment of the large-size retaining wall pile is increasingly complex, and extreme geological conditions such as deep soft and hard interactive stratum and the like are often faced; At present, the existing construction guide frame control technology generally relies on position deviation to carry out PID feedback adjustment or directly carries out simple logic judgment based on the original sensor value and a fixed threshold value, and the traditional method mainly focuses on correcting the geometric position error of the pile body and lacks effective monitoring on the internal stress state and microscopic damage of the pile body; However, the control strategy with single dimension has remarkable limitation, when encountering high-strength geological resistance, the system usually executes forced deviation correction for eliminating position deviation, so that the pile body bears excessive lateral shearing stress, the blind mechanical pressurization not only easily causes physical damage of equipment, but also causes hidden fatigue fracture risk which is difficult to be found in real time by the conventional means in the pile body, and dynamic balance between construction efficiency and structural safety cannot be made; Therefore, how to effectively sense and avoid the structural damage risk caused by stress accumulation while ensuring the construction precision becomes a problem to be solved in the art. Disclosure of Invention The invention provides a special construction guide frame for a large-size wall protection pile, and aims to solve the problems that the existing large-size wall protection pile is easy to skew due to lack of special guide equipment, has no convenient deviation rectifying means, needs to be pulled out for re-construction after being skewed, and further causes material waste, construction period extension, cost increase and safety risk rise. The invention discloses a construction guide frame special for a large-size retaining pile, which comprises a bottom plate, a fixed seat, an X-axis limiting cylinder, a bearing bracket and a Y-axis limiting seat, wherein the bottom plate is fixedly arranged on the bottom plate; The two base plates are arranged in parallel, the fixed seat is welded and fixed between one ends of the two adjacent base plates, a 匚 -shaped structure is formed by the fixed seat and the base plates together, one end of the X-axis limiting cylinder is fixed with the fixed seat, the two base plates are arranged in parallel and are arranged in parallel with the base plates, the bearing seat is fixed at the other end of the X-axis limiting cylinder, and the Y-axis limiting seat is in sliding clamping connection with the two adjacent X-axis limiting cylinders; The top of the bearing bracket is fixedly provided with