A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Asymmetric cable-stayed bridge side span section ground anchor prestress equivalent counterweight system and construction method
The invention discloses an asymmetric cable-stayed bridge side span section ground anchor prestress equivalent counterweight system, and aims to solve specific technical problems that an asymmetric single-tower double-cable-plane cable-stayed bridge is short in side span and a cable bent tower bears unbalanced force due to the fact that main span beams and side span beams are different in length.The specific construction method comprises the steps that when the main beam is constructed, the stay cables are anchored in the rock stratum soil under the beam block at the same position in the vertical direction after side span, certain prestress is applied to the ground anchor, a prestress anchoring system can be directly pre-buried at the auxiliary pier in the construction process, and a novel equivalent balance weight structure system is formed. The structure has better economical efficiency, is convenient to construct and safe and reliable in structure, reduces the counterweight concrete material of the side span section of the traditional asymmetric cable-stayed bridge, and overcomes the defect of complex design and construction of a large temporary support for construction.
本发明公开了一种非对称斜拉桥边跨段地锚预应力等效配重体系，其针对的是非对称独塔双索面斜拉桥由于主、边跨梁的长度不同，边跨较短，索塔承受不平衡力的具体技术问题；具体施工方法是：施工主梁时，斜拉索锚固在边跨后竖向垂直锚固于同位置梁块地下的岩层土质中，并对此地锚施加一定的预应力，施工中辅助墩处可直接预埋预应力锚固体系，形成新型等效配重结构体系。此结构具有更好的经济性，施工方便，结构安全可靠，减小了传统非对称斜拉桥边跨段配重混凝土材料，克服了施工大临支架复杂设计施工的弊端。
Asymmetric cable-stayed bridge side span section ground anchor prestress equivalent counterweight system and construction method
The invention discloses an asymmetric cable-stayed bridge side span section ground anchor prestress equivalent counterweight system, and aims to solve specific technical problems that an asymmetric single-tower double-cable-plane cable-stayed bridge is short in side span and a cable bent tower bears unbalanced force due to the fact that main span beams and side span beams are different in length.The specific construction method comprises the steps that when the main beam is constructed, the stay cables are anchored in the rock stratum soil under the beam block at the same position in the vertical direction after side span, certain prestress is applied to the ground anchor, a prestress anchoring system can be directly pre-buried at the auxiliary pier in the construction process, and a novel equivalent balance weight structure system is formed. The structure has better economical efficiency, is convenient to construct and safe and reliable in structure, reduces the counterweight concrete material of the side span section of the traditional asymmetric cable-stayed bridge, and overcomes the defect of complex design and construction of a large temporary support for construction.
本发明公开了一种非对称斜拉桥边跨段地锚预应力等效配重体系，其针对的是非对称独塔双索面斜拉桥由于主、边跨梁的长度不同，边跨较短，索塔承受不平衡力的具体技术问题；具体施工方法是：施工主梁时，斜拉索锚固在边跨后竖向垂直锚固于同位置梁块地下的岩层土质中，并对此地锚施加一定的预应力，施工中辅助墩处可直接预埋预应力锚固体系，形成新型等效配重结构体系。此结构具有更好的经济性，施工方便，结构安全可靠，减小了传统非对称斜拉桥边跨段配重混凝土材料，克服了施工大临支架复杂设计施工的弊端。
Asymmetric cable-stayed bridge side span section ground anchor prestress equivalent counterweight system and construction method
非对称斜拉桥边跨段地锚预应力等效配重体系及施工方法
DAI LIANGJUN (author) / CUI LINZHAO (author) / PENG SHENKAI (author) / LUO XISHENG (author) / LIU XIAOHAN (author) / SHEN WEICHENG (author) / CUI JIAN (author) / XU LEI (author) / WEI MING (author)
2021-03-19
Patent
Electronic Resource
Chinese
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