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A platform for research: civil engineering, architecture and urbanism
Counter-force pre-pressing method and tool for zero block bracket of double-limb thin-wall pier
The invention provides a zero block bracket counterforce pre-pressing method for a double-limb thin-wall pier, which comprises the following steps of: pre-burying finish rolling deformed steel bars and reserving a counter-pulling hole channel, mounting an anti-sliding key, a middle bracket straight support, a side bracket straight support, a middle bracket inclined support and a side bracket inclined support, laying a distribution cross beam and a distribution longitudinal beam, and mounting a jack and a counterforce frame. And finally, applying a load by using a jack, and observing pre-compression deformation data. The invention further provides a double-limb thin-wall pier zero block bracket counter-force prepressing tool based on the method. The double-limb thin-wall pier zero block bracket counter-force prepressing tool comprises a lower shear key, an upper shear key, a bracket inclined strut, a side bracket straight strut, an opposite-pull rod, a distribution cross beam, a distribution longitudinal beam, a jack and a counter-force frame. The defects that in traditional surcharge preloading construction, the procedure is complex, the hoisting risk is large, and the work efficiency is low are overcome, synchronous stress is conducted through synchronous jack loading, the construction working condition of the zero block is simulated, the preloading purpose is achieved, the non-elastic deformation value of the structure is eliminated, the elastic deformation value of the structure is obtained, and subsequent linear control construction is guided.
本发明提供了一种用于双肢薄壁墩零号块托架反力预压方法，首先预埋精轧螺纹钢和预留对拉孔道，然后安装抗滑键、中托架直撑、边托架直撑、中托架斜撑和边托架斜撑，铺设分配横梁和分配纵梁，安装千斤顶和反力架，最后利用千斤顶施加荷载，观测预压变型数据。本发明同时提供了一种基于上述方法的双肢薄壁墩零号块托架反力预压工装，包括下剪力键、上剪力键、托架斜撑、边托架直撑、对拉杆、分配横梁、分配纵梁和千斤顶、反力架。本发明解决了传统堆载预压施工中工序复杂、吊装风险大、工效低等缺点，通过同步千斤顶加载进行同步受力，模拟零号块施工工况，达到预压目的，消除结构的非弹性变形值，得出结构的弹性变形值，指导后续线性控制施工。
Counter-force pre-pressing method and tool for zero block bracket of double-limb thin-wall pier
The invention provides a zero block bracket counterforce pre-pressing method for a double-limb thin-wall pier, which comprises the following steps of: pre-burying finish rolling deformed steel bars and reserving a counter-pulling hole channel, mounting an anti-sliding key, a middle bracket straight support, a side bracket straight support, a middle bracket inclined support and a side bracket inclined support, laying a distribution cross beam and a distribution longitudinal beam, and mounting a jack and a counterforce frame. And finally, applying a load by using a jack, and observing pre-compression deformation data. The invention further provides a double-limb thin-wall pier zero block bracket counter-force prepressing tool based on the method. The double-limb thin-wall pier zero block bracket counter-force prepressing tool comprises a lower shear key, an upper shear key, a bracket inclined strut, a side bracket straight strut, an opposite-pull rod, a distribution cross beam, a distribution longitudinal beam, a jack and a counter-force frame. The defects that in traditional surcharge preloading construction, the procedure is complex, the hoisting risk is large, and the work efficiency is low are overcome, synchronous stress is conducted through synchronous jack loading, the construction working condition of the zero block is simulated, the preloading purpose is achieved, the non-elastic deformation value of the structure is eliminated, the elastic deformation value of the structure is obtained, and subsequent linear control construction is guided.
本发明提供了一种用于双肢薄壁墩零号块托架反力预压方法，首先预埋精轧螺纹钢和预留对拉孔道，然后安装抗滑键、中托架直撑、边托架直撑、中托架斜撑和边托架斜撑，铺设分配横梁和分配纵梁，安装千斤顶和反力架，最后利用千斤顶施加荷载，观测预压变型数据。本发明同时提供了一种基于上述方法的双肢薄壁墩零号块托架反力预压工装，包括下剪力键、上剪力键、托架斜撑、边托架直撑、对拉杆、分配横梁、分配纵梁和千斤顶、反力架。本发明解决了传统堆载预压施工中工序复杂、吊装风险大、工效低等缺点，通过同步千斤顶加载进行同步受力，模拟零号块施工工况，达到预压目的，消除结构的非弹性变形值，得出结构的弹性变形值，指导后续线性控制施工。
Counter-force pre-pressing method and tool for zero block bracket of double-limb thin-wall pier
一种用于双肢薄壁墩零号块托架反力预压方法及工装
CHEN JIAYONG (author) / ZHAO YINCHAO (author) / XU PINGHUA (author) / WANG SHAOHUA (author) / LIU HUI (author) / JU DONGXING (author)
2021-01-01
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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