Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-supporting cast-in-place construction method for concrete beam of cable-stayed bridge
The invention discloses a self-supporting cast-in-place construction method for a concrete beam of a cable-stayed bridge, and relates to the technical field of bridge construction. The method comprises the following steps: step 1, horizontally dividing a cross beam to be constructed into a lower beam layer and an upper beam layer; step 2, constructing a beam support; step 3, pouring the lower beam layer, and when the concrete strength of the lower beam layer reaches 100% of the self-strength, tensioning and grouting part of prestressing tendons, so that the lower beam layer forms a stable structure; and step 4, pouring the upper beam layer, and tensioning and grouting residual prestressing tendons so as to finish beam construction. The beam is divided into an upper layer and a lower layer for construction, the lower-layer beam is firstly tensioned and grouted to form part of the prestressing tendons, self-weighing in the beam construction process is achieved, the bearing requirement of the beam support is lowered, and the design of the beam support is optimized.
本发明公开了一种斜拉桥混凝土横梁自承法现浇施工方法，涉及桥梁施工技术领域，包括以下步骤：步骤一：将待施工横梁水平分为下横梁层和上横梁层；步骤二：施工横梁支架；步骤三：浇筑下横梁层，待下横梁层的混凝土强度达到自身强度100％时，张拉压浆部分预应力束，使下横梁层形成稳定结构；步骤四：浇筑上横梁层，张拉压浆剩余的预应力束，完成横梁施工。本发明将横梁分为上下两层施工，并将下层横梁先张拉压浆形成一部分预应力束，实现横梁施工过程中的自称重，降低横梁支架承重要求，优化横梁支架设计。
Self-supporting cast-in-place construction method for concrete beam of cable-stayed bridge
The invention discloses a self-supporting cast-in-place construction method for a concrete beam of a cable-stayed bridge, and relates to the technical field of bridge construction. The method comprises the following steps: step 1, horizontally dividing a cross beam to be constructed into a lower beam layer and an upper beam layer; step 2, constructing a beam support; step 3, pouring the lower beam layer, and when the concrete strength of the lower beam layer reaches 100% of the self-strength, tensioning and grouting part of prestressing tendons, so that the lower beam layer forms a stable structure; and step 4, pouring the upper beam layer, and tensioning and grouting residual prestressing tendons so as to finish beam construction. The beam is divided into an upper layer and a lower layer for construction, the lower-layer beam is firstly tensioned and grouted to form part of the prestressing tendons, self-weighing in the beam construction process is achieved, the bearing requirement of the beam support is lowered, and the design of the beam support is optimized.
本发明公开了一种斜拉桥混凝土横梁自承法现浇施工方法，涉及桥梁施工技术领域，包括以下步骤：步骤一：将待施工横梁水平分为下横梁层和上横梁层；步骤二：施工横梁支架；步骤三：浇筑下横梁层，待下横梁层的混凝土强度达到自身强度100％时，张拉压浆部分预应力束，使下横梁层形成稳定结构；步骤四：浇筑上横梁层，张拉压浆剩余的预应力束，完成横梁施工。本发明将横梁分为上下两层施工，并将下层横梁先张拉压浆形成一部分预应力束，实现横梁施工过程中的自称重，降低横梁支架承重要求，优化横梁支架设计。
Self-supporting cast-in-place construction method for concrete beam of cable-stayed bridge
一种斜拉桥混凝土横梁自承法现浇施工方法
XIE BUJUN (Autor:in) / YE YANWEI (Autor:in) / DONG BING (Autor:in) / LI YUANYI (Autor:in) / QIN ZAO (Autor:in) / FEI SHILIN (Autor:in) / WANG JIAN (Autor:in) / YUAN YEFAN (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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