CN216449130U

CN216449130U - Steel deflection detection system for bridge expansion joint

Info

Publication number: CN216449130U
Application number: CN202121601546.4U
Authority: CN
Inventors: 徐速; 徐斌; 尤其; 喻飞; 郝美军; 黄慧
Original assignee: Ningbo Roaby Technology Industrial Group Co ltd
Current assignee: Ningbo Roaby Technology Industrial Group Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-05-06
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to a steel deflection detection system for a bridge expansion joint, wherein two first section steels are respectively arranged on the beam end parts at two sides of the bridge expansion joint, a second section steel is arranged in a gap between the two first section steels, the detection piece extends along the length direction of the bridge expansion joint, and one detection piece is correspondingly restricted in each first limit groove and each second limit groove, a first limiting groove and a second limiting groove are correspondingly arranged on the first profile steel and the second profile steel, strip-shaped limiting pieces are arranged in the two limiting grooves, therefore, different positions of the first section steel and the second section steel in the length direction can be effectively monitored, and compared with the traditional mode, once a certain position is abnormally changed, the detection piece can timely collect and feed back abnormal information, and the fault position can be accurately positioned, and the low efficiency caused by large-area touch inspection is avoided.

Description

Steel deflection detection system for bridge expansion joint

Technical Field

The utility model relates to the field of bridge maintenance, in particular to a steel deflection detection system for a bridge expansion joint.

Background

The bridge is an open permanent structure spanning over obstacles such as rivers, deep valleys and built roads, the beam end of the bridge can generate creep deformation due to the action of factors such as temperature change, concrete shrinkage and creep deformation, variable load and the like, and in order to adapt to the characteristics of the bridge structure, expansion joints capable of freely deforming are required to be arranged in the bridge structure and between the beam end and a bridge abutment back wall so as to ensure that the bridge deck is smooth and protect the structure.

At present, the expansion joint technology of the bridge is mature and perfect, and in the section steel expansion joint formed by splicing, the boundary beam and the middle beam directly bear load, and the load received by the boundary beam and the middle beam is transferred downwards and finally transferred to the bottom concrete. In the long-time driving process, due to external factors or special conditions such as overload, the bottom of the expansion joint of the profile steel is empty, the supporting distance is increased, the deflection value is increased, and once the deflection exceeds the limit of the profile steel, the profile steel is broken, so that the driving safety is seriously influenced.

In order to detect whether the bottom of the section steel is empty or not and whether the deflection value of the section steel meets the requirements or not, the traditional mode is manual inspection, and the traditional methods such as visual inspection and knocking are mainly used by detection personnel, but the traditional methods are low in efficiency and poor in effect. The detection is carried out on roads running at high speed and areas with large traffic flow, traffic control is needed, the traffic is seriously influenced, and the detection working efficiency is very low.

An intelligent detection system is adopted in the existing bridge many times, for example, a Chinese utility model patent with the patent number of CN201520084126.1 discloses a bridge structure health condition monitoring system, and the stress applied to the bridge support in the transverse direction, the longitudinal direction and the vertical direction is detected through a strain sensor, so that the bridge support is prevented from being damaged due to overlarge stress applied to the bridge support; a first inclination angle sensor, a second inclination angle sensor and a deflection sensor are respectively arranged between the abutment and the cross beam, so that the angle change and the position change between the abutment and the cross beam are respectively measured, and the position relation between the abutment and the cross beam is ensured not to generate large offset. The installation positions of the sensors are reasonable, the position relation of all parts of the bridge body can be accurately measured, and the bridge body cannot be damaged.

Although above-mentioned patent has realized the intelligent detection to bridge health conditions to a certain extent, but can only detect out indexes such as bridge angle change, position change, do not carry out key detection to the expansion joint that takes place the damage in the bridge easily, especially to the detection of shaped steel amount of deflection, only can not timely feedback the change condition of each position of shaped steel through the sensor that sets up on the pier, in case those positions take place deformation and can not in time handle, will leave the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a steel deflection detection system for a bridge expansion joint, which can monitor the whole section steel.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a steel amount of deflection detecting system for bridge expansion joint, includes first shaped steel and the second shaped steel that extends the length direction along bridge expansion joint and arrange, wherein: the two first section steels are respectively arranged on the beam end parts at two sides of the bridge expansion joint, and the second section steel is arranged in a gap between the two first section steels;

each first profile steel is provided with a first limiting groove, the first limiting groove extends in the same direction as the first profile steel, the second profile steel is provided with a second limiting groove, and the second limiting groove extends in the same direction as the second profile steel;

also includes:

the detection piece is strip-shaped, extends along the length direction of the bridge expansion joint, and is correspondingly restrained in the first limiting groove and the second limiting groove to form the detection piece.

In order to realize the limit of the detection part and the first section steel in the end beam part, the steel deflection detection system further comprises two embedded parts arranged in the end parts of the two side beams of the bridge expansion joint, each first section steel is arranged at the top of the corresponding embedded part, and the first limit groove is arranged at the bottom of the first section steel.

Specifically, the two first section steels each comprise a first main body, the upper parts of the two first main bodies are provided with first mounting notches for mounting expansion joint sealing elements, and the two first mounting notches are arranged in an opening mode towards each other.

Preferably, the lower parts of the two first main bodies are provided with supporting legs extending away from each other, the bottom of each supporting leg is connected to the corresponding embedded part, and the first limiting groove is formed in the bottom surface of the corresponding supporting leg.

The second type steel comprises a second main body, wherein two sides of the upper part of the second main body are provided with second mounting notches for mounting the other end of the expansion joint sealing element, the second mounting notches on each side of the second main body are arranged opposite to the corresponding first mounting notches, and for the second main body, each of two sides of the second main body is limited and restrained by one expansion joint sealing element.

In order to ensure the support of the second section steel, preferably, the embedded parts are hollow to form a cavity, and both the embedded parts are provided with openings at the sides adjacent to each other; the expansion joint is characterized by further comprising a cross beam, wherein two ends of the cross beam are respectively arranged in the cavities corresponding to the embedded parts in the beam end parts on two sides of the expansion joint and located below the second section steel.

Specifically, a supporting block for supporting the second section steel is arranged at the position, close to the middle, of the top of the cross beam, and the second limiting groove is formed in the bottom of the second section steel.

In order to ensure that two ends of the cross beam are fixed, preferably, the bottom of each cavity is provided with a pressure bearing support, the top of each cavity is provided with a pressing support at a corresponding position, a support interval is formed between each pressing support and each pressure bearing support, and two ends of the cross beam are respectively supported and limited in the corresponding support intervals.

Compared with the prior art, the utility model has the advantages that: in this a steel amount of deflection detecting system for bridge expansion joint, correspond on first shaped steel and second shaped steel and set up first spacing groove and second spacing groove, and set up banding locating part in two spacing inslots, thus, make first shaped steel and second shaped steel length direction's different positions can obtain effectual monitoring, compare in traditional mode, in case a certain department takes place abnormal change, the detection piece just can be timely gather and feed back unusual information, and location fault location that can be accurate, avoided the large tracts of land to touch to look into and the inefficiency that leads to.

Drawings

FIG. 1 is a schematic view of the overall structure of a steel deflection detection system according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of another angle of the steel deflection detecting system in the embodiment of the present invention;

FIG. 3 is an overall schematic view of a first section steel according to an embodiment of the utility model;

FIG. 4 is an overall schematic view of a second section steel in the embodiment of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 4, a preferred embodiment of the present invention. In the present embodiment, it is preferred that,

this a steel amount of deflection detecting system for bridge expansion joint includes first shaped steel 2, second shaped steel 3 and detects 4. Wherein first shaped steel 2 and second shaped steel 3 all extend along the length direction at bridge expansion joint and arrange, and first shaped steel 2 has two, locates respectively on the roof beam tip of bridge expansion joint both sides, and second shaped steel 3 arranges in the clearance between two first shaped steel 2.

The first profile steel 2 and the second profile steel 3 in this embodiment are both provided with special detection structures, wherein each first profile steel 2 is provided with a first limiting groove 21, the first limiting groove 21 extends in the same direction as the first profile steel 2, the second profile steel 3 is provided with a second limiting groove 31, the second limiting groove 31 extends in the same direction as the second profile steel 3, the detection element 4 is in a strip shape and extends along the length direction of the bridge expansion joint, and each of the first limiting groove 21 and the second limiting groove 31 is internally provided with one detection element 4 correspondingly constrained.

The installation of foretell first shaped steel 2 and second shaped steel 3 and expansion joint device may be different structures, and in this embodiment, first shaped steel 2 and second shaped steel 3 are realized through built-in fitting 5, have arranged one built-in fitting 5 respectively in the both sides curb girder tip in the bridge expansion joint, and each first shaped steel 2 is located the top that corresponds built-in fitting 5, and first spacing groove 21 sets up in the bottom of first shaped steel 2. Of course, the number of the embedded parts 5 is not limited, and as the lengths of the section steels are different, a plurality of embedded parts 5 can be arranged in the length direction of each first section steel 2, so that the support in the length direction is realized.

In the present embodiment, each of the two first section steels 2 includes a first body 20, and upper portions of the two first bodies 20 each have a first mounting notch 22 for mounting the expansion joint seal 10, and the two first mounting notches 22 are opened toward each other. In addition, the lower parts of the two first main bodies 20 are respectively provided with support legs 23 extending away from each other, the bottom of each support leg 23 is connected to the corresponding embedded part 5, and the first limiting groove 21 is formed in the bottom surface of the corresponding support leg 23.

And the second type steel 3 includes the second body 30, the both sides of the upper portion of the second body 30 have the second mounting notch 32 used for installing the other end of the expansion joint sealing element 10, the second mounting notch 32 of each side of the second body 30 all with the corresponding first mounting notch 22 relative arrangement, and to the second body 30, each side is all spacing to restrain in its both sides has an expansion joint sealing element 10.

Although the second section steel 3 in this embodiment is located between the two first section steels 2, the embedded parts 5 can still support the first section steel, specifically, the embedded parts 5 are hollow to form a cavity 50, and the two embedded parts 5 both have openings on the side portions adjacent to each other; the expansion joint further comprises a cross beam 51, wherein two ends of the cross beam 51 are respectively arranged in the accommodating cavities 50 corresponding to the embedded parts 5 in the beam end parts on two sides of the expansion joint and are positioned below the second section steel 3. Specifically, a support block 52 for supporting the second section steel 3 is provided at the top of the cross member 51 at a position adjacent to the middle, and the second stopper groove 31 is opened at the bottom of the second section steel 3. And the bottom of each cavity 50 is provided with a pressure bearing support 54, the top of the cavity 50 is provided with a pressing support 53 at a corresponding position, a space is reserved between the pressing support 53 and the pressure bearing support 54 to form a supporting interval, and two ends of the cross beam 51 are respectively supported and limited in the corresponding supporting interval.

In this embodiment, the above-mentioned detecting element is a signal receiving optical cable, the processor 6 is disposed at the end of the first profile steel 2 or the second profile steel 3, the combination of the optical cable and the processor 6 mentioned herein is based on a set of management system, when the profile steel at the bottom of the expansion joint changes, once the profile steel is subjected to a load, the data collected by the signal receiving optical cable exceeds a set value, the signal is transmitted to the processor 6, and the processor 6 processes and feeds back the signal data, and finally presents the signal data in the form of an alarm. The receiving and reporting personnel appoint the maintainers to carry out on-site treatment and maintenance. The above processes of signal acquisition, data processing and the like belong to conventional design, and the model, operation principle process and the like of the signal receiving optical cable and the processor are not described in detail.

Also, directional terms, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like, may be used in the description and claims to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are determined based on the example orientations shown in the figures. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. The utility model provides a steel amount of deflection detecting system for bridge expansion joint, includes first shaped steel (2) and second shaped steel (3) that extend along the length direction extension of bridge expansion joint and arrange, wherein: the two first section steels (2) are respectively arranged on the beam end parts at two sides of the bridge expansion joint, and the second section steel (3) is arranged in a gap between the two first section steels (2);

the first profile steel (2) is provided with a first limiting groove (21), the first limiting groove (21) extends in the same direction as the first profile steel (2), the second profile steel (3) is provided with a second limiting groove (31), and the second limiting groove (31) extends in the same direction as the second profile steel (3);

also includes:

the detection piece (4) is strip-shaped, extends along the length direction of the bridge expansion joint, and one detection piece (4) is correspondingly restrained in each of the first limiting groove (21) and the second limiting groove (31).

2. The steel deflection detection system of claim 1 wherein: the bridge expansion joint is characterized by further comprising two embedded parts (5) which are arranged in the end parts of the two side beams of the bridge expansion joint respectively, the first profile steels (2) are arranged at the tops of the corresponding embedded parts (5), and the first limiting grooves (21) are formed in the bottoms of the first profile steels (2).

3. The steel deflection detection system of claim 2 wherein: the two first section steels (2) comprise first main bodies (20), the upper parts of the two first main bodies (20) are respectively provided with a first mounting notch (22) used for mounting one end of the expansion joint sealing member (10), and the two first mounting notches (22) are arranged in an opening mode towards each other.

4. The steel deflection detection system of claim 3 wherein: the lower parts of the two first main bodies (20) are respectively provided with supporting legs (23) which extend away from each other, the bottom of each supporting leg (23) is connected to the corresponding embedded part (5), and the first limiting groove (21) is formed in the bottom surface of the corresponding supporting leg (23).

5. The steel deflection detection system according to claim 4 wherein: second shaped steel (3) is including second main part (30), both sides on second main part (30) upper portion have second installation notch (32) that are used for installing expansion joint sealing member (10) the other end, second installation notch (32) of each side of second main part (30) all with corresponding first installation notch (22) mutual disposition, and to second main part (30), each side all is spacing restraint in its both sides has one expansion joint sealing member (10).

6. The steel deflection detection system according to any one of claims 2 to 5, wherein: the embedded parts (5) are hollow to form a containing cavity (50), and openings are formed in the side parts, adjacent to each other, of the two embedded parts (5); the expansion joint is characterized by further comprising a cross beam (51), wherein two ends of the cross beam (51) are respectively arranged in the containing cavities (50) corresponding to the embedded parts (5) in the beam end parts on two sides of the expansion joint and are located below the second section steel (3).

7. The steel deflection detection system of claim 6 wherein: and a supporting block (52) for supporting the second section steel (3) is arranged at the position, close to the middle part, of the top of the cross beam (51), and the second limiting groove (31) is formed in the bottom of the second section steel (3).

8. The steel deflection detection system of claim 7 wherein: the bottom of each cavity (50) is provided with a pressure bearing support (54), the top of each cavity (50) is provided with a pressing support (53) at a corresponding position, a space is reserved between each pressing support (53) and each pressure bearing support (54) to form a supporting interval, and two ends of the cross beam (51) are respectively supported and limited in the corresponding supporting intervals.