阅读说明：本技术 一种盆式支座的承压弹性体受力监测装置 (Pressure-bearing elastomer stress monitoring device of basin-type support ) 是由 郭勇 刘永婷 高双全 王庆培 李二茂 杜春晓 王瑞 贺泽霞 孙琰 曹铁成 周笑 于 2020-12-17 设计创作，主要内容包括：本发明属于桥梁/建筑支座技术领域,具体的讲涉及一种盆式支座的承压弹性体受力监测装置。其包括设置在盆体外圆周围的一个或多个具有限位机构的压力传感器,所述盆体侧壁设置若干个供传力销贯穿的通孔,所述传力销一端与所述压力传感器连接,其另一端与所述盆体内的承压弹性体连接。该承压弹性体受力监测装置能够对桥梁支座的全寿命周期进行实时受力监测,同时便于组装和拆卸,能够对内部传感器进行及时维修更换,具有结构简单紧凑、设计布局合理的特点。(The invention belongs to the technical field of bridge/building supports, and particularly relates to a pressure-bearing elastomer stress monitoring device of a basin-type support. The pressure sensor comprises one or more pressure sensors which are arranged around the excircle of the pot body and provided with limiting mechanisms, wherein the side wall of the pot body is provided with a plurality of through holes for the force transmission pins to penetrate through, one end of the force transmission pin is connected with the pressure sensors, and the other end of the force transmission pin is connected with a pressure bearing elastic body in the pot body. The pressure-bearing elastomer stress monitoring device can monitor the stress of the bridge bearing in real time in the whole life cycle, is convenient to assemble and disassemble, can maintain and replace the internal sensor in time, and has the characteristics of simple and compact structure and reasonable design and layout.)

1. The utility model provides a pressure-bearing elastomer atress monitoring devices of basin formula support which characterized in that: including setting up the pressure sensor that one or more have stop gear around the basin body excircle, basin body side wall sets up the through-hole that a plurality of confession biography power round pin runs through, pass power round pin one end with pressure sensor connects, its other end with pressure-bearing elastomer in the basin body is connected.

2. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 1, characterized in that: the number of the pressure sensors is 4, and the pressure sensors are respectively positioned at four quadrant points of the pot body.

3. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 1, characterized in that: the limiting mechanism comprises a counter-force baffle, the counter-force baffle is arranged on an extension plate at the bottom of the pot body, a positioning plate extending in four directions is further arranged at the bottom of the pot body, and anchoring holes are formed in the surface of the positioning plate.

4. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 3, characterized in that: the limiting mechanism further comprises a pre-tightening structure, and the pre-tightening structure comprises a cushion block and a wedge-shaped strip which are arranged between the counter force baffle and the pressure sensor; the cushion block is in stress contact with the pressure sensor, and the wedge-shaped strip is inserted into a gap between the cushion block and the counter-force baffle.

5. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 4, characterized in that: one side of the cushion block is a gradual slope matched with the shape of the wedge-shaped strip, and the wedge-shaped strip is connected with the extension plate through a fastening bolt.

6. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 3, characterized in that: the counter-force baffle is connected with the extension plate through a positioning bolt, and the counter-force baffle is connected with the wedge-shaped strip through a combined bolt.

7. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 1, characterized in that: the basin body lateral wall is equipped with in with the spacing hole of through-hole intercommunication, pass power round pin surface in the through-hole has along its axial arrangement's channel, screw rod or round pin axle run through in the spacing hole inserts the channel.

8. The pressure-bearing elastic body stress monitoring device of the basin-type support according to claim 1, characterized in that: the pressure sensor is a vibrating wire sensor and is electrically connected with the microcontroller, and the microcontroller is provided with a wireless transmitting module.

Technical Field

The invention belongs to the technical field of bridge/building supports, and particularly relates to a pressure-bearing elastomer stress monitoring device of a basin-type support.

Background

The pot-type rubber support has obvious shock insulation effect and mature technology, and is widely applied to bridge engineering construction. In the existing bridge design standard system, most of bridge bearing loads and stress distribution parameters thereof are calculated based on theoretical assumptions, and due to the lack of effective actual work testing means, certain errors exist between calculation results and actual conditions of a support, when the errors are too large, abnormal bridge work is caused, a large potential safety hazard is formed, or material waste is caused due to too large safety degree design.

Therefore, the full life cycle health monitoring of the bridge is realized by adding the real-time monitoring function to the bridge, which is a necessary premise for the safety and the economy of the bridge design. Moreover, after the bridge is built, the abutments can be settled within a certain period of time, which can cause the redistribution of internal force of the bridge structure, and if the abutments are settled, the three-point support of the simply supported box girders can possibly cause catastrophic accidents. Therefore, the stress condition of the bridge support is known in time, three-point support is realized when vehicles pass a bridge in a remote early warning manner, and the vehicles are processed in the first time, so that an economic and effective solution for avoiding catastrophic accidents of the bridge is provided.

In the prior art, the stress condition of the support is monitored mainly by a pressure sensing unit, and due to the fact that the sensing unit is usually fixedly connected with the support main body, if the sensing unit needs to be replaced, the whole support needs to be replaced, and a normally running circuit needs to be shut down, so that the cost is high and the operation is complex.

Disclosure of Invention

The invention aims to provide the basin-type support bearing elastomer stress monitoring device which can monitor the whole life cycle of a bridge support in real time, is convenient to assemble and disassemble, can maintain and replace an internal sensor in time, and has simple and compact structure and reasonable design and layout.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a pressure-bearing elastomer atress monitoring devices of basin formula support which characterized in that: including setting up the pressure sensor that one or more have stop gear around the basin body excircle, basin body side wall sets up the through-hole that a plurality of confession biography power round pin runs through, pass power round pin one end with pressure sensor connects, its other end with pressure-bearing elastomer in the basin body is connected.

The additional technical characteristics of the pressure-bearing elastomer stress monitoring device for the basin-type support further comprise:

the number of the pressure sensors is 4, and the pressure sensors are respectively positioned at four quadrant points of the pot body;

the limiting mechanism comprises a counter-force baffle, the counter-force baffle is arranged on an extension plate at the bottom of the pot body, a positioning plate extending in four directions is further arranged at the bottom of the pot body, and an anchoring hole is formed in the surface of the positioning plate;

the limiting mechanism further comprises a pre-tightening structure, and the pre-tightening structure comprises a cushion block and a wedge-shaped strip which are arranged between the counter force baffle and the pressure sensor; the cushion block is in stress contact with the pressure sensor, and the wedge-shaped strip is inserted into a gap between the cushion block and the counter-force baffle;

one side of the cushion block is a gradual inclined plane matched with the shape of the wedge-shaped strip, and the wedge-shaped strip is connected with the extension plate through a fastening bolt;

the counter-force baffle is connected with the extension plate through a positioning bolt, and the counter-force baffle is connected with the wedge-shaped strip through a combined bolt;

a limiting hole communicated with the through hole is formed in the side wall of the pot body, a groove channel axially arranged along the surface of the force transmission pin in the through hole is formed in the surface of the force transmission pin, and a screw rod or a pin shaft penetrates through the limiting hole and is inserted into the groove channel;

the pressure sensor is a vibrating wire sensor, the pressure sensor is electrically connected with a microcontroller, and the microcontroller is provided with a wireless transmitting module.

Compared with the prior art, the pressure-bearing elastomer stress monitoring device of the basin-type support provided by the invention has the following advantages: firstly, because the pressure sensor of the pressure-bearing elastomer stress monitoring device of the basin-type support is arranged around the basin body through the limiting mechanism, the side wall of the basin body is provided with a plurality of through holes for the force transmission pins to penetrate through, one end of each force transmission pin is connected with the pressure sensor, the other end of each force transmission pin is connected with the pressure-bearing elastomer in the basin body, the stress condition of the bridge support is reflected on the pressure-bearing elastomer in the bridge support, the stress change of the pressure-bearing elastomer is sensed through the distributed pressure sensors, and the real-time monitoring on the settlement of the bridge abutment and the comprehensive load condition; compared with the traditional monitoring system which is fixedly connected with an integrated and built-in structure, the pressure sensor of the monitoring device is arranged outside the periphery of the basin body of the support, the installation and the disassembly are very convenient, meanwhile, the number and the types of the sensors can be adjusted adaptively according to the actual working condition of the support, preferably, the limiting structure of the pressure sensor is detachably connected, the maintenance and the replacement are convenient, the accuracy and the effectiveness of monitoring data are improved, and the operation safety of the bridge support is enhanced.

Drawings

FIG. 1 is a schematic structural diagram of a pressure-bearing elastomer stress monitoring device of a basin-type support;

FIG. 2 is a top view of the pressure-bearing elastomer force monitoring device of the basin-shaped support.

Detailed Description

The structure and the working principle of the pressure-bearing elastic body stress monitoring device of the basin-type support provided by the invention are further explained in detail with reference to the attached drawings.

Referring to fig. 1, a schematic structural diagram of a pressure-bearing elastic body stress monitoring device of a basin-type support provided by the invention is shown. The structure of the pressure-bearing elastomer stress monitoring device comprises one or more pressure sensors 3 with limiting mechanisms arranged around the excircle of the pot body 1, a plurality of through holes for the force transmission pins 4 to penetrate through are arranged on the side wall 10 of the pot body 1, one end of each force transmission pin 4 is connected with the pressure sensor 3, and the other end of each force transmission pin is connected with a pressure-bearing elastomer 5 in the pot body 1.

The working principle is as follows: according to the practical application condition, set up pressure sensor 3 around the excircle of support basin body 1, one side of pressure sensor 3 has stop gear, the opposite side is connected with biography power round pin 4, pass power round pin 4 and run through the through-hole that is located the basin body 1 lateral wall, its tip is connected with the pressure-bearing elastomer 5 in the basin body 1 (lateral wall stress contact), when the bearing pressure-bearing atress of support, external force reaction is on its inside pressure-bearing elastomer 5, because pressure-bearing elastomer 5 has the stress uniformity, its upper portion atress reaction is at the lateral part, and feed back the atress to pressure sensor 3 through passing power round pin 4, real-time supervision function has been realized promptly.

In the structure of the stress monitoring device for the pressure-bearing elastic body 5,

preferably, the number of the pressure sensors 3 is 4, the pressure sensors are respectively located at four quadrant points of the pot body 1, when the pressure sensors are specifically installed, the 4 pressure sensors 3 are distributed in a criss-cross mode along the bridge floor, the stress condition of load change of the bridge floor can be quickly reflected, monitoring data obtained by the sensors are more accurate, the working conditions of the bridge can be conveniently mastered in real time, lateral stress applied to the annular direction of the pot body 1 is transmitted to the pressure sensors 3, the stress condition can be timely known and judged by analyzing monitoring data of the support, and the use safety of the support is guaranteed;

furthermore, one end of the pressure sensor 3 is in stress contact with the force transmission pin 4, and the other end of the pressure sensor 3 must be fixed by a limiting mechanism, as shown in fig. 2, the limiting mechanism includes a counter-force baffle 21, the counter-force baffle 21 is disposed on an extension plate 22 at the bottom of the tub body 1, if the number of the pressure sensors 3 is four, the number of the extension plate 22 and the number of the counter-force baffle 21 are also four, and the four combinations correspond to the positions of the pressure sensors 3 respectively; preferably, in order to enhance the stability of the basin-shaped support, the bottom of the basin body 1 is further provided with a positioning plate 23 extending in four directions, and the surface of the positioning plate 23 is provided with anchoring holes 24 or threaded holes which are connected with piers or building matrixes through anchors or anchoring bolts;

in one embodiment, the limiting mechanism further comprises a pre-tightening structure, and the pre-tightening structure comprises a cushion block 201 and a wedge-shaped bar 202 which are arranged between the counter force baffle 21 and the pressure sensor 3; the cushion block 201 is in stress contact with the pressure sensor 3, the wedge-shaped strip 202 is inserted into a gap between the cushion block 201 and the reaction baffle 21, the force transmission pin 4 is respectively connected with the pressure-bearing elastic body 5 and the pressure sensor 3 in a compacting mode by inserting the cushion block 201, so that the sensitivity of the sensor in receiving data is ensured, the feedback failure of the pressure sensor 3 is also prevented after the support is displaced to a larger extent, meanwhile, the structure belongs to a detachable mode, the pressure sensor 3 can be maintained and replaced after the cushion block 201 is pulled out, and the installation and the detachment are convenient and rapid;

further, in order to facilitate the wedge-shaped bar 202 to be inserted into the gap between the reaction baffle 21 and the cushion block 201, one side of the cushion block 201 is a gradual inclined surface matched with the shape of the wedge-shaped bar 202, that is, the wedge-shaped bar 202 and the cushion block 201 are contacted more closely, the reaction force to the pressure sensor 3 is more constant, the wedge-shaped bar 202 and the extension plate 22 are connected through the fastening bolt 61, specifically, a vertical threaded through hole is formed in the wedge-shaped bar 202, the fastening bolt 61 penetrates through the threaded through hole and then is screwed with a threaded hole formed in the extension plate 22, and after the wedge-shaped bar 202 is inserted and positioned, the fastening bolt 61 is used for fixing the wedge-shaped;

the reaction baffle 21 and the extension plate 22 may be of an integrated structure, and when the reaction baffle 21 is higher in height, the reaction baffle is preferably of a detachable structure, for example, the reaction baffle 21 is located at the end of the extension plate 22, the reaction baffle 21 is provided with a through threaded hole, the end of the extension plate 22 is provided with a threaded blind hole, and then the reaction baffle and the extension plate are connected through a positioning bolt 62; of course, the reaction force baffle 21 and the wedge bar 202 may be connected by the assembling bolt 63, as long as a threaded hole for abutting is provided at a contact portion between the reaction force baffle 21 and the wedge bar 202 (preferably, at an upper portion of the reaction force baffle 21);

preferably, a limiting hole 11 communicated with the through hole is formed in the side wall of the pot body 1, a channel 41 is formed in the surface of the force transmission pin 4 in the through hole and is axially arranged, the screw 12 or the pin shaft penetrates through the limiting hole 11 and is inserted into the channel 41, the limiting hole 11 and the through hole are preferably vertically arranged, after the screw 12 or the pin shaft is inserted, the end part of the force transmission pin is arranged in the channel 41 of the force transmission pin 4, namely, the force transmission pin 4 can axially move to sense the stress change of the elastic body, the force transmission pin 4 is in a limiting state in other directions, the force transmission pin 4 is not prone to deviation, the accuracy of a monitoring value of the pressure sensor 3 is ensured, and the channel 41 can also be replaced by a circular groove under the condition that the axial movement amount of the force transmission pin 4;

furthermore, the pressure sensor 3 is a vibrating wire sensor, the measurement value is accurate, the working stability is good, the use cost is low, the long-term monitoring is adapted, and the economic benefit is good, the pressure sensor 3 is electrically connected with the microcontroller 71, the microcontroller 71 is provided with the wireless transmitting module 72, the microcontroller 71 can collect sensing data and transmit the data out through the wireless transmitting module 72 in time, for example, a mobile phone or an upper computer is connected with devices such as an SIM card and an SIM antenna, so that personnel can acquire the data in time and perform further processing, and the intelligent level of the support is improved.