A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Beam bridge cable-stayed system transformation construction method
The invention relates to the technical field of beam bridge transformation construction, in particular to a beam bridge cable-stayed system transformation construction method which comprises the steps that S1, main tower and anchorage construction is conducted, specifically, main tower and anchorage construction is conducted in front of and behind a bridge abutment; s2, temporary supports are erected, wherein the temporary supports are erected on the two sides of the pier column to be dismantled; s3, jacking the upper beam body: jacking the upper beam body at the pier column to be dismantled by a jack, removing a pier top support on the pier column to be dismantled, and transferring the load of the upper beam body to a temporary support by falling back of the jack; s4, the inhaul cable anchoring cross beam is transformed, specifically, the pier top of the to-be-dismantled pier column is cut so that an inhaul cable anchoring cross beam transformation space can be reserved, and the size is increased through an original inhaul cable anchoring cross beam on the top of the to-be-dismantled pier column; s5, stay cable installation, specifically, the main tower and the stay cables are anchored to cross beams, the stay cables are installed and tensioned between the main tower and the anchorage, and temporary supports are unloaded; and S6, dismantling the to-be-dismantled pier column and the temporary support. The method has the effect of widening the underneath pass road on the premise of not dismantling the original beam type bridge.
本申请涉及梁式桥改造施工技术领域，尤其涉及一种梁式桥斜拉体系改造施工方法，包括S1：主塔及锚碇施工：在桥台前后分别进行主塔和锚碇施工；S2：临时支撑搭设：在待拆除墩柱两侧搭建临时支撑；S3：上部梁体顶升：千斤顶顶升待拆除墩柱处的上部梁体，移除待拆除墩柱上的墩顶支座，通过千斤顶回落使上部梁体载荷转移到临时支撑；S4：拉索锚固横梁改造：将待拆除墩柱的墩顶部位切割以留出拉索锚固横梁改造空间，利用待拆除墩柱顶部原拉索锚固横梁进行尺寸增大；S5：斜拉索安设：将主塔与拉索锚固横梁、主塔与锚碇间安设斜拉索并张拉，临时支撑卸载；S6：待拆除墩柱及临时支撑拆除。本申请具有在不拆除原梁式桥的前提下实现下穿道路扩宽的效果。
Beam bridge cable-stayed system transformation construction method
The invention relates to the technical field of beam bridge transformation construction, in particular to a beam bridge cable-stayed system transformation construction method which comprises the steps that S1, main tower and anchorage construction is conducted, specifically, main tower and anchorage construction is conducted in front of and behind a bridge abutment; s2, temporary supports are erected, wherein the temporary supports are erected on the two sides of the pier column to be dismantled; s3, jacking the upper beam body: jacking the upper beam body at the pier column to be dismantled by a jack, removing a pier top support on the pier column to be dismantled, and transferring the load of the upper beam body to a temporary support by falling back of the jack; s4, the inhaul cable anchoring cross beam is transformed, specifically, the pier top of the to-be-dismantled pier column is cut so that an inhaul cable anchoring cross beam transformation space can be reserved, and the size is increased through an original inhaul cable anchoring cross beam on the top of the to-be-dismantled pier column; s5, stay cable installation, specifically, the main tower and the stay cables are anchored to cross beams, the stay cables are installed and tensioned between the main tower and the anchorage, and temporary supports are unloaded; and S6, dismantling the to-be-dismantled pier column and the temporary support. The method has the effect of widening the underneath pass road on the premise of not dismantling the original beam type bridge.
本申请涉及梁式桥改造施工技术领域，尤其涉及一种梁式桥斜拉体系改造施工方法，包括S1：主塔及锚碇施工：在桥台前后分别进行主塔和锚碇施工；S2：临时支撑搭设：在待拆除墩柱两侧搭建临时支撑；S3：上部梁体顶升：千斤顶顶升待拆除墩柱处的上部梁体，移除待拆除墩柱上的墩顶支座，通过千斤顶回落使上部梁体载荷转移到临时支撑；S4：拉索锚固横梁改造：将待拆除墩柱的墩顶部位切割以留出拉索锚固横梁改造空间，利用待拆除墩柱顶部原拉索锚固横梁进行尺寸增大；S5：斜拉索安设：将主塔与拉索锚固横梁、主塔与锚碇间安设斜拉索并张拉，临时支撑卸载；S6：待拆除墩柱及临时支撑拆除。本申请具有在不拆除原梁式桥的前提下实现下穿道路扩宽的效果。
Beam bridge cable-stayed system transformation construction method
一种梁式桥斜拉体系改造施工方法
HE PENG (author) / GENG YONGKUI (author) / XUE TAO (author) / ZHANG ERHUAN (author) / WANG ZHENGWEI (author) / XI SHAOMIN (author) / ZHOU BO (author)
2024-01-05
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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