Novel two-way spacing cable is roof beam even device
Technical Field
The utility model belongs to the technical field of bridge seismic resistance, and particularly relates to a novel bidirectional limiting inhaul cable beam connecting device.
Background
In order to reduce the damage of bridge structures after the bridge is shocked, the problems of larger relative displacement of the upper and lower structures of the bridge, beam falling and the like are prevented, and meanwhile, the smoothness of road bridge rescue after the earthquake is ensured. Therefore, the earthquake resistance of the main body of the bridge structure needs to be considered in the design and operation stages, but the earthquake resistance of the bridge structure can be effectively enhanced by adding earthquake resistant members.
The beam falling prevention system is a final safety guarantee facility for preventing the beam falling damage of the bridge when the bridge structure encounters unexpected earthquake load excitation. When the bridge is subjected to rare earthquakes, the shear deformation of the support of the bridge is very likely to exceed the allowable shear deformation of the support, and finally the upper structure of the bridge is caused to be seated, and the beam falling prevention device is started to prevent the beam falling from being damaged.
The system for preventing the bridge from falling is a final safety guarantee for preventing the bridge structure from falling from being damaged by the earthquake, and is an important facility for preventing the bridge from being destructively damaged in the earthquake. Therefore, the research on the influence of the anti-falling beam system on the bridge structure under the action of an earthquake is very realistic and has positive significance.
The beam connecting device is used as a second restraint device in the beam falling prevention system, so as to prevent the beam falling under the expected earthquake action, and plays a very important role in the beam falling prevention system.
The type of the connecting beam device applied to bridge engineering at present mainly comprises a connecting plate type, a rod type and a inhaul cable type. The connecting plate type connecting beam device mainly connects a connecting plate with components respectively arranged on a beam body and a bridge pier (beam body) through bolts, meanwhile, certain design gaps are reserved between the bolts and the components along the bridge direction, the maximum play of the support is ensured under the expected earthquake, the structure mainly consists of rigid limit, short service life, poor reliability and single limit direction. The rod-type connecting beam device is a reinforcing measure adopted earlier, the middle connecting rod mainly adopts large-diameter steel bars, and the connecting beam device is generally connected and mainly used for longitudinally preventing a beam from falling, and the limiting direction is single. The stay rope type connecting beam device adopts a cable material with large flexibility, realizes the mode of connecting the beam body, has a complex structure and has a single limiting direction.
Disclosure of utility model
The utility model aims to provide a novel bidirectional limiting inhaul cable connecting beam device, which aims at solving the problem that the limiting direction of the connecting beam device in the prior art is single.
In order to achieve the aim, the technical scheme adopted by the utility model is that the novel bidirectional limiting inhaul cable beam connecting device is characterized by comprising the following components:
the base is a steel structural member and is fixed on the side face or the bottom face of the beam body through bolt holes by bolts.
The steering gears are in the same number as the bases and are rotatably arranged in the corresponding bases, cavities with open structures are arranged in the steering gears, and pin shafts are arranged in each group of cavities;
The steel wire ropes are wound on the pin shafts in the two groups of bases and connected end to end.
In a further embodiment, the base is bolted to the beam, pier or abutment.
In a further embodiment, a wire rope clamp is also included for securing and clamping the wire rope.
In a further embodiment, the steel wire rope is a whole wire rope, and the winding number can be one or more. The number of windings of the steel wire rope can be used for conveniently setting the tensile force which can be born by the connecting beam device according to different working condition demands, and the series production is easy to form.
The steel wire rope can be a stainless steel wire rope or a plastic shell for protecting a common steel wire rope and the like, has good durability, and can be a common steel wire rope under the general environmental requirements.
In a further embodiment, the base is welded or cast directly to the ear plate for mounting the diverter.
In a further embodiment, the wire rope is wound on the pins of the two diverters as a whole, the degree of looseness of the winding being adjusted according to the actual distance between the beam body and the beam body or between the beam body and the pier/station at the construction site.
The novel bidirectional limiting inhaul cable connecting beam device has the beneficial effects that the novel bidirectional limiting inhaul cable connecting beam device comprises a pair of bases, a pair of diverters, pin shafts, a steel wire rope and a steel wire rope clamp, wherein a single base, the diverters and the pin shafts form a group, the two groups are respectively arranged, one group is used for fixing the bases on the side face or the bottom face of a beam body through anchor bolts, the other group is used for fixing the bases on the side face of the beam body or a bridge pier (a platform) through the same mode, the bases and the diverters are connected through the pin shafts, the pin shafts penetrate through holes of the diverters to be fixed, the two groups of component units are connected through the pin shafts of the steel wire rope, so that the two groups of component units are formed into a whole body, when an earthquake happens, the beam body or the bridge pier (a platform) can relatively move, the steel wire rope is in a tight state and drives the diverters to rotate, so that the beam body is restrained from moving longitudinally and transversely at the same time, effective limiting is provided, the bearing performance of the whole beam body or the bridge connecting beam device is improved, and the safety of a bridge structure is guaranteed.
The steel wire rope is mainly connected with the two beam bodies in a force transmission mode, the force transmission size is related to the diameter of the steel wire rope and the winding number of the steel wire rope, the larger the winding number is, the larger the force transmission is, the cost is little, the stressed end of the steel wire rope is connected end to end by a steel wire rope clamp, the steel wire rope can be a stainless steel wire rope or a plastic shell for protecting a common steel wire rope and the like, the steel wire rope can be a common steel wire rope under the general environmental requirements, the durability is good, the service life is long, the steel wire rope is light in weight, the maintenance and the replacement are very convenient, the length of the steel wire rope can be adjusted conveniently at will, the construction precision requirement of the base installation relative position in any direction is low, and the construction is convenient.
The steering gear can be convenient to set different steering angles according to different displacement requirements, can be suitable for different working conditions, and has stronger adaptability.
Drawings
FIG. 1 is a schematic structural diagram of a novel bidirectional limiting cable tie beam device in embodiment 1;
FIG. 2 is a schematic diagram of the installation of a novel bi-directional spacing cable coupling device when the beams are coupled;
FIG. 3 is a schematic diagram of the installation of a novel bi-directional spacing cable coupling device when the beam piers (platforms) are connected;
FIG. 4 is a schematic illustration of a diverter;
Fig. 5 is a schematic view of a base.
The icons are 11-beam body, 12-beam body, 13-bridge pier, 1-base, 2-steering gear, 3-pin, 4-steel wire rope and 5-steel wire rope clamp.
Detailed Description
The utility model is further described below with reference to the drawings and examples of the specification.
Example 1
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
The embodiment provides a novel two-way spacing cable even roof beam device, including paired base (1), paired steering gear (2), round pin axle (3), wire rope (4), wire rope clamp (5), wherein single base (1), steering gear (2), round pin axle (3) are constituteed a set of, and two sets altogether. One group is fixed on the side face of the beam body (11) through an anchor bolt, the other group is fixed on the side face of the beam body (12) through the same mode, in each group, the base (1) is rotatably connected with the steering gear (3), the pin shaft (1) penetrates through a hole of the steering gear (2) to be fixed, the two groups of pin shafts (3) are wound through the steel wire rope (4) to connect the two groups of component units to form a whole, when an earthquake happens, the beam bodies (11) and (12) can move relatively, the steel wire rope (4) is in a tight state, the steering gear (2) is driven to rotate, the beam connecting device is restrained to move longitudinally and transversely at the same time, effective limit is provided, the bearing performance of the whole beam connecting device is improved, and the safety of a bridge structure is guaranteed.
The base is a steel structural member and is fixed to the side surface or the bottom surface of the beam body by bolts through bolt holes.
The steel wire rope can be a stainless steel wire rope or a plastic shell for protecting a common steel wire rope and the like, has good durability, and can be a common steel wire rope under the general environmental requirements.
Example 2
The embodiment provides a novel bidirectional limiting inhaul cable connecting beam device which comprises a pair of bases (1), a pair of diverters (2), pin shafts (3), steel wire ropes (4) and steel wire rope clamps (5), wherein a single base (1), the diverters (2) and the pin shafts (3) form a group, the two groups are combined, one group is used for fixing the bases (1) on the bottom surface of a beam body (11) through anchor bolts, the other group is fixed on the side surface of a bridge pier (13) through the same mode, in each group, the bases (1) and the diverters (3) are rotatably connected, the pin shafts (1) penetrate through holes of the diverters (2) to be fixed, the two groups of component units are connected through the pin shafts (3) of the two groups of steel wire ropes (4) to form a whole, when an earthquake happens, the beam body (11) or (12) and the bridge pier (13) are relatively moved, the steel wire ropes (4) are in a tight state, the diverter (2) is driven to rotate, the connecting beam device is enabled to be restrained to move longitudinally and transversely at the same time, the bridge is effectively supported, the bearing beam structure of the whole connecting beam device is guaranteed, and the safety of the whole bridge is guaranteed.
In the steering gear (2) of the scheme, four holes can be formed and used for fixing the pin shaft (3) and fixing the steering gear (2) on the base (1) through the pin shaft (3), as shown in fig. 5.
The steel wire rope (4) has the advantages that the force transmission size is related to the diameter of the steel wire rope and the winding number of the steel wire rope, the larger the winding number is, the larger the force transmission is, the cost is little increased, the stressed end of the steel wire rope is connected end to end by the steel wire rope clamp (5), the steel wire rope can be a stainless steel wire rope or a plastic shell for protecting a common steel wire rope and the like, the steel wire rope can be a common steel wire rope under the general environmental requirements, the durability is good, the service life is long, the steel wire rope is light in weight, the maintenance and the replacement are very convenient, the length of the steel wire rope can be adjusted conveniently at will, the construction precision requirement of the base installation relative position in any direction is low, and the construction is convenient.
The buffer connecting beam device connects the beam body and the side surface of the beam body or the bottom surface of the beam body and the side surface of the bridge pier (platform) to form a whole through the flexible steel wire rope, improves the stress mode of the bridge and prevents the falling beam.
The utility model can conveniently adjust the length of the steel wire rope to meet the theoretical design requirement because the actual installation position can deviate from the design position due to the inaccuracy of the construction of the anchoring bolt of the fixed base and the difference of the installation temperature, and the steel wire rope is always only subjected to axial tension through the adjustment of the steering gear when the longitudinal and transverse directions of the beam body and the beam body or the bridge pier (platform) are relatively displaced, so that the aim of simultaneously restraining Liang Tizong transverse displacement is fulfilled. The steel wire rope can be replaced conveniently, and the whole device is convenient to maintain.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.