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CN-224202481-U - Environment-structure response coupling monitoring supporting mechanism for bridge-rail structure

CN224202481UCN 224202481 UCN224202481 UCN 224202481UCN-224202481-U

Abstract

The utility model discloses an environment-structure response coupling monitoring supporting mechanism for a bridge-rail structure, which relates to the technical field of civil engineering and comprises a bracket, wherein a plurality of expansion bolts are fixedly connected to the bracket, a feedback assembly is arranged in an expansion sleeve of each expansion bolt, each feedback assembly comprises a plurality of fixing rings, a plurality of expansion flaps are hinged to the outer side walls of the fixing rings, connecting rods are hinged to one side wall of each expansion flap, which is close to each bolt rod, a plurality of nuts are detachably connected to the outer side walls of each bolt rod through threads, connecting rings are in running fit with the side walls, which are close to the connecting rods, of each nut are hinged to the side wall of each adjacent connecting ring, a first spring is fixedly connected to any side wall of each nut, and the other end of each first spring is fixedly connected with each bolt rod, so that the sensor mounting steps are simplified, and the falling risk in the sensor monitoring process is reduced.

Inventors

  • ZHU XINGSHENG
  • ZHANG LONG
  • ZHONG JUNSHAN
  • WU ANXU
  • GOU HONGYE
  • WANG JUNMING

Assignees

  • 京沪高速铁路股份有限公司

Dates

Publication Date
20260505
Application Date
20250627

Claims (10)

  1. 1. The environment-structure response coupling monitoring supporting mechanism for the bridge-rail structure comprises a support (1), wherein the support (1) is detachably connected with a sensor, a plurality of expansion bolts (2) are fixedly connected to the support (1), a feedback assembly (23) is arranged in an expansion sleeve (22) of the expansion bolts (2), the feedback assembly (23) comprises a plurality of fixing rings (238), the fixing rings (238) are fixedly connected with bolt rods (21) of the expansion bolts (2), a plurality of expansion flaps (231) are hinged to the outer side walls of the fixing rings (238), connecting rods (234) are hinged to one side wall, close to the bolt rods (21), of the bolt rods (21), a plurality of nuts (233) are detachably connected to the outer side walls, close to the connecting rods (234), of the nuts (233) are respectively rotatably matched with connecting rings, the connecting rods (234) are respectively hinged to the side walls of the adjacent connecting rings, any one side wall of each nut (233) is fixedly connected with a first spring (232), a wedge block (21) is respectively connected to one side wall of each connecting rod (21), a wedge block (236) is respectively connected to each side wall of each connecting rod (21), and the wedge block (236) is provided with an accumulation assembly.
  2. 2. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, characterized in that the pitch of the threads between the nut (233) and the bolt shank (21) are different.
  3. 3. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, wherein said links (234) are disposed on a side of said expansion flap (231) remote from said sensor, said links (234) are hinged with cutting strips (235), and an end of said cutting strips (235) remote from said links (234) is embedded in an adjacent said bolt.
  4. 4. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, wherein said pressure accumulating assembly comprises a second spring (237), said second spring (237) being fixedly connected at either end to said wedge (236), said second spring (237) being fixedly connected at the other end to said bolt shank (21).
  5. 5. The environmental-structural response coupling monitoring and supporting mechanism for a bridge-rail structure according to claim 1, wherein the pressure accumulating assembly comprises a cavity which is arranged in the bolt rod (21), a plurality of openings are formed in the side wall, close to the wedge block (236), of the cavity, the wedge block (236) is in sliding fit with the side wall of the cavity through the openings, a baffle is fixedly connected to the side wall, close to the cavity, of the wedge block (236), and pressurized gas is arranged in the cavity.
  6. 6. The environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, wherein an annular cavity is formed in the side wall of the bolt rod (21), a plurality of notches are formed in the outer side wall of the annular cavity, and the fixing rings (238) are fixedly connected with the side wall of the annular cavity.
  7. 7. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, wherein said expansion lobes (231) are all uniformly disposed along the axis of said retaining ring (238).
  8. 8. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 1, wherein the bracket (1) is detachably connected with a positioning assembly.
  9. 9. An environmental-structural response coupling monitoring support mechanism for a bridge-rail structure according to claim 6, wherein said notch sidewall is fixedly attached with a waterproofing membrane (24).
  10. 10. The environment-structure response coupling monitoring supporting mechanism for the bridge-rail structure according to claim 1, wherein the connection part of the bracket (1) and the sensor is fixedly connected with a locking piece (11), and the locking pieces (11) are made of elastic materials.

Description

Environment-structure response coupling monitoring supporting mechanism for bridge-rail structure Technical Field The utility model relates to the technical field of civil engineering, in particular to an environment-structure response coupling monitoring supporting mechanism for a bridge-rail structure. Background The bridge-rail structure environment-structure response coupling monitoring technology aims at providing data support for safety evaluation and life prediction of traffic infrastructures such as bridges, rails and the like through interaction of real-time perception environment load and structure dynamic response. According to the technology, by deploying a multi-type sensor network, mechanical parameters such as structural deformation, vibration, stress strain and the like are continuously collected, and simultaneously, environmental variables such as temperature, humidity, wind load and the like are combined, a digital model of the environment-structure coupling effect is constructed, and finally, intelligent diagnosis and early warning of the structural state are realized. In a bridge-rail coupling monitoring system, the type selection and layout of the sensors directly influence the effectiveness of data acquisition. Fiber bragg grating sensors are often embedded into concrete structures or welded to the surface of steel beams due to their electromagnetic interference resistance and long-distance transmission advantages, and are used for monitoring strain distribution and temperature gradient of key sections of the structures. The piezoelectric acceleration sensor is fixed in vibration sensitive areas such as bridge deck, track bed board and the like through a magnetic base or epoxy resin, and captures the structural vibration spectrum caused by vehicle passing. The laser displacement sensor is usually erected at the joint of the bridge pier and the beam body, and can measure the millimeter-scale telescopic displacement in a non-contact manner. The miniature weather station is arranged in an open area at the periphery of the structure, and the temperature, humidity, wind speed and wind direction sensors are fixed through the support, so that the environmental load parameters are synchronously recorded. Particularly in rail monitoring, a wheel-rail force sensor needs to be embedded into a rail fastener system, and a three-way strain gauge is stuck to the rail web part at a specific angle, so that the dynamic contact force when a train passes through is accurately captured. The comprehensive application of the sensor greatly improves the reliability of acquired data, eliminates measurement blind areas and provides powerful data support for the safety evaluation of the bridge-rail structure for operators. However, in the installation process of the sensor, part of the sensor is installed on the surface of the concrete by using the expansion bolts, an operator is required to evaluate the installation position in the installation process, the sensor is prevented from falling off in the monitoring process due to the fact that the pretightening force is too small, and meanwhile, the situation that the crack is formed in the concrete at the installation position due to the fact that the pretightening force is too large in the initial installation state is also required to be ensured. When facing the sensor bonded by special glue, an operator is often required to add a curing agent with a certain proportion into the glue according to the installation position, the temperature and humidity of the installation environment and the like, and if the operator judges that the curing agent is wrong, the problem of insufficient stability of the sensor may be caused by too large or too small proportion of the curing agent. Disclosure of utility model The utility model aims to provide an environment-structure response coupling monitoring supporting mechanism for a bridge-rail structure, so as to solve the problems. The utility model is realized by the following technical scheme: The utility model provides an environment-structure response coupling monitoring supporting mechanism for bridge-rail structure, includes the support, the support can be dismantled with the sensor and be connected, fixedly connected with expansion bolts on the support, be equipped with feedback subassembly in expansion bolts's the inflation cover, feedback subassembly includes a plurality of solid fixed rings, just gu the solid fixed ring all with expansion bolts's bolt pole fixed connection, gu the lateral wall of fixed ring all articulates there are a plurality of expansion flaps, the expansion flap is close to a lateral wall of bolt pole all articulates there is the connecting rod, bolt pole lateral wall can dismantle through the screw thread and be connected with a plurality of nuts, the nut is close to all normal running fit has the go-between on the lateral wall of connecting rod, just the connecting rod all articulates with adjac