CN-122016213-A - Beam end loading device for module structure anti-seismic test

CN122016213ACN 122016213 ACN122016213 ACN 122016213ACN-122016213-A

Abstract

The invention provides a beam end loading device for a module structure anti-seismic test, which comprises a base plate, a mounting plate and an auxiliary fixing structure. The lower end of the base plate is provided with a loading unit, the mounting plates are arranged at two positions above the base plate, the mounting plates below are connected with the base plate through force transmission components, the two mounting plates are arranged at intervals along the vertical direction, a mounting space for the two beam ends to pass through is formed between the two mounting plates, a rolling shaft which is arranged between the two beam ends and contacts the two beam ends is arranged in the mounting space, an auxiliary fixing structure is arranged between the two mounting plates and connected with the two mounting plates, and the auxiliary fixing structure is used for driving the two mounting plates to symmetrically move relatively or move oppositely. The invention provides a beam end loading device for a module structure anti-seismic test, which aims to solve the problems of the prior art that the contact surface of the beam end loading test device has large friction resistance and poor accuracy of test results due to no constraint.

Inventors

ZHANG WANG
ZHAO XINPENG
LIU YONGYE
XIONG QINGQING
CUI SHAOLONG
WU YAPENG
ZHENG JIANKAI

Assignees

石家庄铁道大学

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. A beam-end loading device for a modular structure seismic test, comprising: The loading unit is arranged at the lower end of the substrate; The mounting plates are arranged, the two mounting plates are positioned above the base plate, and the mounting plates positioned below are connected with the base plate through a force transmission component; the two mounting plates are arranged at intervals along the vertical direction, and a mounting space for the two beam ends to pass through is formed between the two mounting plates; The auxiliary fixing structure is arranged between the two mounting plates and connected with the two mounting plates, and the auxiliary fixing structure is used for driving the two mounting plates to symmetrically and relatively move or oppositely move.
2. The beam end loading device for the module structure earthquake resistance test according to claim 1, further comprising an adjusting unit which is slidably connected with the two mounting plates respectively, wherein the adjusting unit is used for adjusting the interval between the two mounting plates, the length direction of the beam in the mounting space is set to be a first direction, the horizontal direction perpendicular to the first direction is set to be a second direction, and the adjusting unit comprises two adjusting components which are arranged at intervals along the second direction.
3. A beam-end loading device for use in a modular structure seismic test as in claim 2, wherein each of said adjustment assemblies comprises: The two ends of the two sliding rods are respectively connected with the two mounting plates in a sliding way, and the two sliding rods are hinged in a crossed way; and the fixing piece is detachably connected with the two sliding rods and used for fixing the two sliding rods.
4. A beam-end loading device for use in a seismic test of a modular structure as recited in claim 1, wherein a plurality of uniformly distributed leveling supports are provided between said base plate and said mounting plate at a lower end, each of said leveling supports comprising: the two vertical plates are arranged in parallel and at intervals, and each vertical plate is provided with a plurality of clamping grooves which are sequentially arranged from top to bottom; the support is arranged between the two vertical plates and provided with top ends extending out of the two vertical plates; The support rod penetrates through the two vertical plates, and two ends of the support rod extend out of the two vertical plates respectively, and are fixedly connected with the bottom ends of the support posts; the clamping blocks are arranged in two and are respectively arranged in the clamping grooves of the two vertical plates so as to adjust the positions of the supporting rods and the supporting columns.
5. A beam-end loading device for use in a modular structure seismic test as claimed in claim 1, wherein said force transfer member comprises: the two connecting plates are arranged in parallel and at intervals, and are respectively connected with the base plate and the mounting plate below; the butterfly springs are arranged in a plurality, and each butterfly spring is uniformly distributed between the two connecting plates.
6. The beam-end loading device for a seismic test of a modular structure of claim 2, further comprising first limiting structures, wherein the first limiting structures are at least two, and each of the first limiting structures is disposed at intervals along the first direction, and each of the first limiting structures comprises: The fixed plate is fixedly connected with the mounting plate positioned above, and a chute is arranged on the fixed plate; The two first limiting pieces are arranged at intervals along the second direction and are both in sliding connection with the fixed plate; each first limiting piece is provided with a sliding block matched with the sliding groove, and each first limiting piece is provided with a first vertical surface contacted with the beam end; the first locking pieces are provided with a plurality of first locking pieces, and each first locking piece is used for locking and fixing the two first limiting pieces on the fixed plate.
7. A beam-end loading device for use in a seismic test of a modular structure as recited in claim 6, wherein each of said first stop members has a triangular configuration.
8. The beam-end loading device for a seismic test of a modular structure of claim 6, further comprising second limiting structures, wherein at least two of the second limiting structures are provided, each of the second limiting structures is spaced apart along the first direction, and each of the second limiting structures comprises: the two mounting seats are arranged at intervals along the second direction and are connected with the mounting plate positioned below; The two second limiting pieces are arranged and are in one-to-one correspondence with the two mounting seats, and each second limiting piece is in sliding connection with the corresponding mounting seat along the vertical direction; and a plurality of second locking pieces are arranged and are used for respectively locking and fastening the two second limiting pieces on the corresponding mounting seats.
9. A beam-end loading device for use in a seismic test of a modular structure as defined in claim 2, wherein said secondary securing structure comprises two securing assemblies spaced apart along said second direction, each of said securing assemblies comprising: the two clamping plates are respectively connected with the two mounting plates in a clamping way; The telescopic parts are provided with at least one, the fixed end of each telescopic part is connected with the clamping plate at the lower end, and the telescopic end of each telescopic part is connected with the clamping plate at the upper end; the auxiliary support rod sets are provided with two, and two ends of each auxiliary support rod set are respectively connected with the two clamping plates in a sliding mode.
10. A beam-end loading device for use in a seismic testing of a modular structure as claimed in claim 2, wherein said mounting plate at the lower end is provided with two support shafts spaced apart in said first direction, each of said support shafts being arranged in said second direction for placement of a beam end.

Description

Beam end loading device for module structure anti-seismic test Technical Field The invention belongs to the technical field of steel structure module building tests, and particularly relates to a beam end loading device for a module structure anti-seismic test. Background The building beam is used as a key stress member in building structure and bridge engineering, and the bending resistance, shearing resistance, earthquake resistance and ultimate bearing performance directly determine the structural safety. In engineering design and detection and identification, a beam end loading test is a mode for acquiring the stress characteristics of a beam body, verifying the bearing capacity and the failure mechanism, and by applying vertical or horizontal or coupling load to the beam end, the actual working condition is simulated and the load is measured. In the experimental process, a steel structure module building is adopted, and comprises an upper module group and a lower module group (namely an upper beam and a lower beam). In the beam end loading test process, the beam body loading fixing device is core equipment for ensuring accurate application of test load and true and reliable test data. In the prior art, two beam bodies in a traditional loading device are in rigid contact, the friction resistance of a contact surface is large, a reasonable limiting constraint structure is lacked, the beam body dislocation cannot be effectively limited in the test process while the horizontal deformation of the beam body is allowed, the stress boundary condition of the beam body is easily caused to be inconsistent with a theoretical model, and the accuracy and the data reliability of a test result are directly influenced. And traditional loading device generally adopts the direct fastening's of bolt connected form, and installation and dismantlement all need the dismouting bolt of point by point, and operation flow is complicated, consuming time hard, can't realize quick clamping and location, and work efficiency is low. Disclosure of Invention The invention provides a beam end loading device for a module structure anti-seismic test, which aims to solve the problems of high friction resistance of a contact surface of a beam end loading test device and poor accuracy of test results caused by no constraint in the prior art. In order to achieve the purpose, the invention adopts the technical scheme that the beam end loading device for the module structure anti-seismic test comprises: The loading unit is arranged at the lower end of the substrate; The mounting plates are arranged, the two mounting plates are positioned above the base plate, and the mounting plates positioned below are connected with the base plate through a force transmission component; the two mounting plates are arranged at intervals along the vertical direction, and a mounting space for the two beam ends to pass through is formed between the two mounting plates; The auxiliary fixing structure is arranged between the two mounting plates and connected with the two mounting plates, and the auxiliary fixing structure is used for driving the two mounting plates to symmetrically and relatively move or oppositely move. In one possible implementation manner, the beam end loading device for the module structure anti-seismic test further comprises an adjusting unit which is respectively and slidably connected with the two mounting plates, wherein the adjusting unit is used for adjusting the interval between the two mounting plates, the length direction of the beam in the mounting space is set to be a first direction, the horizontal direction perpendicular to the first direction is set to be a second direction, and the adjusting unit comprises two adjusting components which are arranged at intervals along the second direction. In one possible implementation, each of the adjustment assemblies includes: The two ends of the two sliding rods are respectively connected with the two mounting plates in a sliding way, and the two sliding rods are hinged in a crossed way; and the fixing piece is detachably connected with the two sliding rods and used for fixing the two sliding rods. In one possible implementation manner, a plurality of uniformly distributed leveling supports are arranged between the base plate and the mounting plate at the lower end, and each leveling support comprises: the two vertical plates are arranged in parallel and at intervals, and each vertical plate is provided with a plurality of clamping grooves which are sequentially arranged from top to bottom; the support is arranged between the two vertical plates and provided with top ends extending out of the two vertical plates; The support rod penetrates through the two vertical plates, and two ends of the support rod extend out of the two vertical plates respectively, and are fixedly connected with the bottom ends of the support posts; the clamping blocks are arranged in two and are respectively arranged