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Construction method of small-radius curve precast slab beam
The construction method comprises the steps that the two ends of each prestress curve prefabricated slab beam are located and installed through pier supports, and the multiple prestress curve prefabricated slab beams are hoisted and laid into a curve bridge cover face; the support center line of the pier support and the beam center line of the prestressed curve precast slab beam are eccentrically arranged, and the eccentric distance is a; a concrete pile guardrail is arranged on the inner side of the arc of the curved bridge cover face in a pouring mode, a bent steel plate guardrail is installed on the outer side of the arc of the curved bridge cover face, and the weight ratio of the bent steel plate guardrail to the concrete pile guardrail is 0.5-0.6: 1. By the adoption of the technical scheme, the counter-force of the supports on the inner side and the outer side tends to be balanced, and the phenomenon that the bridge pier supports are disengaged due to negative counter-force in the using process of a curved bridge can be avoided.
本发明公开了一种小半径曲线预制板梁的施工方法，每块预应力曲线预制板梁的两端分别通过桥墩支座定位安装，且多块预应力曲线预制板梁起吊铺装成曲线桥梁盖面，桥墩支座的支座中心线与预应力曲线预制板梁的梁中心线均偏心设置，偏心间距为a；曲线桥梁盖面的圆弧内侧浇筑设有混凝土桩护栏，曲线桥梁盖面的圆弧外侧安装有弯曲钢板护栏，弯曲钢板护栏与混凝土桩护栏之间的重量比为0.5‑0.6：1。采用本技术方案，内外侧支座反力趋于平衡，可避免曲线桥梁使用过程中因出现负反力而引起桥墩支座脱空现象。
Construction method of small-radius curve precast slab beam
The construction method comprises the steps that the two ends of each prestress curve prefabricated slab beam are located and installed through pier supports, and the multiple prestress curve prefabricated slab beams are hoisted and laid into a curve bridge cover face; the support center line of the pier support and the beam center line of the prestressed curve precast slab beam are eccentrically arranged, and the eccentric distance is a; a concrete pile guardrail is arranged on the inner side of the arc of the curved bridge cover face in a pouring mode, a bent steel plate guardrail is installed on the outer side of the arc of the curved bridge cover face, and the weight ratio of the bent steel plate guardrail to the concrete pile guardrail is 0.5-0.6: 1. By the adoption of the technical scheme, the counter-force of the supports on the inner side and the outer side tends to be balanced, and the phenomenon that the bridge pier supports are disengaged due to negative counter-force in the using process of a curved bridge can be avoided.
本发明公开了一种小半径曲线预制板梁的施工方法，每块预应力曲线预制板梁的两端分别通过桥墩支座定位安装，且多块预应力曲线预制板梁起吊铺装成曲线桥梁盖面，桥墩支座的支座中心线与预应力曲线预制板梁的梁中心线均偏心设置，偏心间距为a；曲线桥梁盖面的圆弧内侧浇筑设有混凝土桩护栏，曲线桥梁盖面的圆弧外侧安装有弯曲钢板护栏，弯曲钢板护栏与混凝土桩护栏之间的重量比为0.5‑0.6：1。采用本技术方案，内外侧支座反力趋于平衡，可避免曲线桥梁使用过程中因出现负反力而引起桥墩支座脱空现象。
Construction method of small-radius curve precast slab beam
一种小半径曲线预制板梁的施工方法
LIU GANGLIANG (author) / HAN CHUNLI (author) / CHEN JIE (author) / LI ZHISHENG (author) / XU YIMING (author) / DENG BAIHONG (author) / JIN TAE-HO (author) / QIU JIEHAN (author) / ZHENG JIE (author) / QIAO LIANBO (author)
2022-09-30
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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