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叠合梁是分2次浇捣混凝土的梁,第一次在预制场做成预制梁;第二次在施工现场进行,当顶制梁吊装安放完成后、再浇捣上部的混凝土使其连成整体。叠合梁按受力性能又可分为“一阶段受力叠合梁”和“二阶段受力叠合梁”2类。前者是指施工阶段在预制梁下设有可靠支撑,能保证施工阶段作用的荷载全部传给支撑:后者则是指施工阶段在简支的预制梁下不设支撑,施工阶段的全部荷载完全由预制梁承担。本文则是介绍“二阶段受力叠合梁”在后河水库启闭机工作桥的设计应用。
The composite beam is a beam that is poured into concrete twice in the first time, and is made into a prefabricated beam in the prefabricated field for the first time. The second time is carried out at the construction site. After the top beam is installed and installed, the upper concrete is poured Into the whole. According to the mechanical properties of the composite beam can be divided into “one-stage force composite beam ” and “two-stage force composite beam ” 2 categories. The former refers to the construction phase under the prefabricated beam with reliable support, can guarantee the role of the construction phase of the load all transferred to the support: the latter refers to the construction phase in the simple support under the prefabricated beams without support, the construction phase of the full load completely Beam prefabricated. This article is to introduce the design and application of “two-stage force composite beam” hoist working bridge in Houhe Reservoir.