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A platform for research: civil engineering, architecture and urbanism
Beam falling prevention device for bridge in earthquake area and design method of beam falling prevention device
The invention discloses an anti-beam-falling device for a bridge in an earthquake area and a design method thereof.The anti-beam-falling device comprises a steel sleeve, the steel sleeve is located on at least one side of a beam body, a distance is formed between the steel sleeve and a support pad stone on the corresponding side, and the steel sleeve and the beam body are connected through a connecting piece; the connecting piece comprises a first connecting end, a second connecting end and a rod body between the first connecting end and the second connecting end, the first connecting end is connected into the steel sleeve, and the second connecting end is connected with the beam body; the sectional dimension of the first connecting end and the sectional dimension of the second connecting end are both larger than the sectional dimension of the rod body, and/or the elastic modulus of the first connecting end and the elastic modulus of the second connecting end are both larger than the elastic modulus of the rod body. Under the action of an earthquake, a part with a small cross section or a part with a small elastic modulus is subjected to plastic deformation firstly to dissipate energy, so that the influence of earthquake force on a bridge structure is reduced, the energy dissipation effect is achieved through local plastic deformation, the damage of the earthquake to a bridge is reduced, and post-earthquake repair is facilitated.
本发明公开了一种地震区桥梁的防落梁装置及其设计方法，防落梁装置包含钢套筒，所述钢套筒位于梁体的至少一侧，所述钢套筒与对应侧的支座垫石具有间距，所述钢套筒和梁体之间通过连接件连接，所述连接件包含第一连接端、第二连接端和二者之间的杆体，所述第一连接端连接于所述钢套筒内，所述第二连接端连接所述梁体；所述第一连接端和第二连接端的截面尺寸均大于所述杆体的截面尺寸，和/或，所述第一连接端和第二连接端的弹性模量均大于所述杆体的弹性模量。本装置在地震作用下，截面小的部位或弹模小的部位率先发生塑性变形进行耗能，以减小地震力对桥梁结构的影响，以局部塑性变形来达到耗能作用，减小地震对桥梁的破坏，便于震后修复。
Beam falling prevention device for bridge in earthquake area and design method of beam falling prevention device
The invention discloses an anti-beam-falling device for a bridge in an earthquake area and a design method thereof.The anti-beam-falling device comprises a steel sleeve, the steel sleeve is located on at least one side of a beam body, a distance is formed between the steel sleeve and a support pad stone on the corresponding side, and the steel sleeve and the beam body are connected through a connecting piece; the connecting piece comprises a first connecting end, a second connecting end and a rod body between the first connecting end and the second connecting end, the first connecting end is connected into the steel sleeve, and the second connecting end is connected with the beam body; the sectional dimension of the first connecting end and the sectional dimension of the second connecting end are both larger than the sectional dimension of the rod body, and/or the elastic modulus of the first connecting end and the elastic modulus of the second connecting end are both larger than the elastic modulus of the rod body. Under the action of an earthquake, a part with a small cross section or a part with a small elastic modulus is subjected to plastic deformation firstly to dissipate energy, so that the influence of earthquake force on a bridge structure is reduced, the energy dissipation effect is achieved through local plastic deformation, the damage of the earthquake to a bridge is reduced, and post-earthquake repair is facilitated.
本发明公开了一种地震区桥梁的防落梁装置及其设计方法，防落梁装置包含钢套筒，所述钢套筒位于梁体的至少一侧，所述钢套筒与对应侧的支座垫石具有间距，所述钢套筒和梁体之间通过连接件连接，所述连接件包含第一连接端、第二连接端和二者之间的杆体，所述第一连接端连接于所述钢套筒内，所述第二连接端连接所述梁体；所述第一连接端和第二连接端的截面尺寸均大于所述杆体的截面尺寸，和/或，所述第一连接端和第二连接端的弹性模量均大于所述杆体的弹性模量。本装置在地震作用下，截面小的部位或弹模小的部位率先发生塑性变形进行耗能，以减小地震力对桥梁结构的影响，以局部塑性变形来达到耗能作用，减小地震对桥梁的破坏，便于震后修复。
Beam falling prevention device for bridge in earthquake area and design method of beam falling prevention device
一种地震区桥梁的防落梁装置及其设计方法
ZHONG YAWEI (author) / PEI ZHIYUAN (author) / XIONG JIA (author) / CHEN KEJIAN (author) / CHEN JIANFENG (author) / ZHANG HONGWEI (author) / LI HENG (author) / LIU JUNJIE (author) / TAN QINGQUAN (author) / GUO GUYUE (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Beam falling prevention device for bridge in high earthquake area
| European Patent Office | 2024