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合银广场工程为内筒一外框结构,采用大孔径人工挖孔桩基础,核心筒用钢骨柱与钢筋混凝土的组合结构,外框用钢管混凝土结构.地下室共4层,每层建筑面积为3000m~2,核心筒承台底标高为-23.6m,外围底板底标高为-18.0m.为满足工期要求,地下室采用半逆作法施工,核心筒部分先行施工至地下室顶板底标高,周边预留反压土,反压土边坡做土钉锚喷网支护,待地下室顶板施工完成后,再施工核心外围的-4—1层.地下室顶板用钢梁、压板铜板与钢筋混凝土楼板作为组合结构.压型钢板作为永久性模板,免除传统的支撑体系,避免了地下室大面积的超高支架,同时满足了工程地面上下结构的同步施工,加快了施工进度.1压型钢板的选型压型钢板的厚度及板型的选择是基于施工时避免临时支撑这一原则而定的.根据图纸结构平面要求以及设计提供的楼面荷载,选择型号为YXB—344—688,t=0.8mm的压型钢板.在实际施工中,除东南角一跨板外,其余板均
The Heyin Plaza project is an outer frame structure of the inner cylinder. It uses a large-diameter artificial digging pile foundation, a combined structure of steel column and reinforced concrete for the core barrel, and a concrete-filled steel tube structure for the outer frame. The basement has a total of 4 floors, each floor area. For 3000m~2, the bottom elevation of the core cylinder cap is -23.6m, and the bottom elevation of the outer bottom is -18.0m. To meet the construction time requirement, the basement is semi-reverse construction, and the core tube part is constructed first to the basement elevation of the basement, and the surrounding area is pre-set. The back pressure soil and back pressure soil slope shall be supported by soil nail anchor nets. After the completion of the construction of the basement in the basement, the core layer 4-1 shall be constructed. The steel beam for the roof of the basement, the pressure plate copper plate and the reinforced concrete floor shall be used as Combined structure. Pressed steel plate as a permanent template, eliminating the traditional support system, to avoid the large area of the basement of the ultra-high support, while meeting the construction of the construction of the ground up and down the synchronous construction, speeding up the construction schedule. 1 pressure plate type selection The thickness of the profiled steel plate and the selection of the plate type are determined based on the principle of avoiding temporary support during construction. According to the requirements of the drawing structure plane and the floor load provided by the design, the model number is YXB-344-688, t=0. 8mm profile steel plate. In actual construction, except for the southeast corner of a span plate, the remaining plates are