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A platform for research: civil engineering, architecture and urbanism
Main bridge steel truss girder falling process
The invention relates to a main bridge steel truss girder falling process. The main bridge steel truss girder falling process is characterized in that a concrete girder falling method comprises the following steps that S1, preparation is conducted before girder falling of a main bridge; s2, sliding in place; s3, a jack and a steel plate are arranged; s4, jacking the jack and removing a sliding shoe; s5, first-time beam falling is carried out; s6, girder falling for the second time; s7, repeatedly falling the beam; s8, a permanent support is arranged; the modularized steel plates which are crossed transversely and longitudinally are arranged below the jack, the thickness of each layer of the modularized steel plates is fixed, and the supporting height of each time can be accurately guaranteed when each layer is taken and placed; the contact area can be guaranteed by adopting a transverse and longitudinal crossing mode, and the stability of steel plate supporting is improved; the temporary buttress is arranged below the main bridge steel truss girder, the temporary buttress adopts a steel box cushion block supporting steel plate mode, the temporary buttress and the jack alternately descend by 150 mm every time, the girder descending mode is matched with linear monitoring and stress monitoring, the stability and safety of girder descending of the main bridge steel truss girder are improved, the linear shape of the steel truss girder is guaranteed, and stress generation is avoided.
本发明涉及一种主桥钢桁梁落梁工艺，其特征在于：具体落梁方法如下：S1：主桥落梁前准备；S2：滑移就位；S3：千斤顶及钢板设置；S4：千斤顶顶升及滑靴拆除；S5：第一次落梁；S6：第二次落梁；S7：重复落梁；S8：永久支座的设置；通过在千斤顶的下方设置模块化的横纵交叉的钢板，模块化的钢板每层的厚度是固定，在每层取放时可以精确的保证每次支撑的高度；采用横纵交叉的方式设置可以保证接触面积，提升钢板支撑的稳定性；在主桥钢桁梁下方设置临时支墩，且临时支墩采用钢箱垫块支撑钢板形式，临时支墩与千斤顶每次交替下降150mm，该落梁方式配合线形监测和应力监测，提高了主桥钢桁梁落梁的稳定性和安全性，保证了钢桁梁线形和避免应力产生。
Main bridge steel truss girder falling process
The invention relates to a main bridge steel truss girder falling process. The main bridge steel truss girder falling process is characterized in that a concrete girder falling method comprises the following steps that S1, preparation is conducted before girder falling of a main bridge; s2, sliding in place; s3, a jack and a steel plate are arranged; s4, jacking the jack and removing a sliding shoe; s5, first-time beam falling is carried out; s6, girder falling for the second time; s7, repeatedly falling the beam; s8, a permanent support is arranged; the modularized steel plates which are crossed transversely and longitudinally are arranged below the jack, the thickness of each layer of the modularized steel plates is fixed, and the supporting height of each time can be accurately guaranteed when each layer is taken and placed; the contact area can be guaranteed by adopting a transverse and longitudinal crossing mode, and the stability of steel plate supporting is improved; the temporary buttress is arranged below the main bridge steel truss girder, the temporary buttress adopts a steel box cushion block supporting steel plate mode, the temporary buttress and the jack alternately descend by 150 mm every time, the girder descending mode is matched with linear monitoring and stress monitoring, the stability and safety of girder descending of the main bridge steel truss girder are improved, the linear shape of the steel truss girder is guaranteed, and stress generation is avoided.
本发明涉及一种主桥钢桁梁落梁工艺，其特征在于：具体落梁方法如下：S1：主桥落梁前准备；S2：滑移就位；S3：千斤顶及钢板设置；S4：千斤顶顶升及滑靴拆除；S5：第一次落梁；S6：第二次落梁；S7：重复落梁；S8：永久支座的设置；通过在千斤顶的下方设置模块化的横纵交叉的钢板，模块化的钢板每层的厚度是固定，在每层取放时可以精确的保证每次支撑的高度；采用横纵交叉的方式设置可以保证接触面积，提升钢板支撑的稳定性；在主桥钢桁梁下方设置临时支墩，且临时支墩采用钢箱垫块支撑钢板形式，临时支墩与千斤顶每次交替下降150mm，该落梁方式配合线形监测和应力监测，提高了主桥钢桁梁落梁的稳定性和安全性，保证了钢桁梁线形和避免应力产生。
Main bridge steel truss girder falling process
一种主桥钢桁梁落梁工艺
JIANG HENGXIN (author) / SUN HONGCANG (author) / ZHENG MINGGUO (author) / WANG XUAN (author) / LIU BO (author) / GU ZHENGTAO (author) / DUAN QIAOHUA (author) / WANG QIZONG (author) / MIAO ZIJIAN (author) / QIN SHAOXIAN (author)
2023-09-12
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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