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A platform for research: civil engineering, architecture and urbanism
Ultra-wide large-span composite beam bridge and construction technology thereof
The invention provides an ultra-wide and large-span composite beam bridge and a construction technology thereof. The composite beam bridge comprises a foundation, two side piers, two middle piers and a steel-concrete composite beam, and the steel-concrete composite beam is composed of a steel main beam, a UHPC bridge deck slab and concrete; the construction process of the combined beam bridge comprises the following steps: constructing a foundation, side piers, middle piers, temporary piers and a scattered splicing bracket; a steel main beam is spliced on the temporary pier and the scattered splicing support, and after the steel main beam is constructed to a closure section, steel beam bottom plate combination concrete at the fulcrum of the middle pier is poured; dismantling the scattered support, applying pre-jacking force to the pier top of the temporary pier, adjusting the steel beam line type, and installing a midspan closure section; pouring UHPC bridge deck slabs at the midspan of the main span and the ends of the side span beams, and removing the temporary piers; the rest UHPC bridge deck slabs are poured to the middle piers from the midspan beam end and the side span beam end respectively; and carrying out full-bridge auxiliary construction. The composite beam bridge can be suitable for the span of 200 m or above, the beam bridge structure is more attractive while the utilization efficiency of the bridge is improved, and development of the ultra-wide and large-span composite beam bridge is promoted.
本发明提供一种超宽大跨组合梁桥及其施工工艺，组合梁桥包括基础、两个边墩、两个中墩和钢混凝土组合梁，钢混凝土组合梁由钢主梁、UHPC桥面板及混凝土组成；组合梁桥的施工工艺步骤如下：建造基础、边墩、中墩、临时墩和散拼支架；在临时墩和散拼支架上拼接钢主梁，钢主梁施工至合龙段后，浇筑中墩支点处钢梁底板结合混凝土；拆除散拼支架，在临时墩墩顶施加预顶力，调整钢梁线型，安装跨中合龙段；浇筑主跨跨中和边跨梁端处UHPC桥面板，拆除临时墩；从跨中和边跨梁端分别向中墩浇筑剩余UHPC桥面板；全桥附属施工。本发明的组合梁桥可适用跨径200m以上，在提高桥梁利用效率的同时使梁桥结构更美观，促进了超宽大跨组合梁桥的发展。
Ultra-wide large-span composite beam bridge and construction technology thereof
The invention provides an ultra-wide and large-span composite beam bridge and a construction technology thereof. The composite beam bridge comprises a foundation, two side piers, two middle piers and a steel-concrete composite beam, and the steel-concrete composite beam is composed of a steel main beam, a UHPC bridge deck slab and concrete; the construction process of the combined beam bridge comprises the following steps: constructing a foundation, side piers, middle piers, temporary piers and a scattered splicing bracket; a steel main beam is spliced on the temporary pier and the scattered splicing support, and after the steel main beam is constructed to a closure section, steel beam bottom plate combination concrete at the fulcrum of the middle pier is poured; dismantling the scattered support, applying pre-jacking force to the pier top of the temporary pier, adjusting the steel beam line type, and installing a midspan closure section; pouring UHPC bridge deck slabs at the midspan of the main span and the ends of the side span beams, and removing the temporary piers; the rest UHPC bridge deck slabs are poured to the middle piers from the midspan beam end and the side span beam end respectively; and carrying out full-bridge auxiliary construction. The composite beam bridge can be suitable for the span of 200 m or above, the beam bridge structure is more attractive while the utilization efficiency of the bridge is improved, and development of the ultra-wide and large-span composite beam bridge is promoted.
本发明提供一种超宽大跨组合梁桥及其施工工艺，组合梁桥包括基础、两个边墩、两个中墩和钢混凝土组合梁，钢混凝土组合梁由钢主梁、UHPC桥面板及混凝土组成；组合梁桥的施工工艺步骤如下：建造基础、边墩、中墩、临时墩和散拼支架；在临时墩和散拼支架上拼接钢主梁，钢主梁施工至合龙段后，浇筑中墩支点处钢梁底板结合混凝土；拆除散拼支架，在临时墩墩顶施加预顶力，调整钢梁线型，安装跨中合龙段；浇筑主跨跨中和边跨梁端处UHPC桥面板，拆除临时墩；从跨中和边跨梁端分别向中墩浇筑剩余UHPC桥面板；全桥附属施工。本发明的组合梁桥可适用跨径200m以上，在提高桥梁利用效率的同时使梁桥结构更美观，促进了超宽大跨组合梁桥的发展。
Ultra-wide large-span composite beam bridge and construction technology thereof
一种超宽大跨组合梁桥及其施工工艺
XU WEIMIN (author) / ZHAO SHICHAO (author) / LI PANSHAN (author) / WANG WEI (author) / LU DONGYANG (author) / CHANG FUPING (author) / LI CHUNLIN (author) / JIANG YANG (author) / HE PENG (author) / CHEN LIANG (author)
2024-07-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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