Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LNG storage tank outer tank dome concrete pressure maintaining pouring construction optimization method
The invention belongs to the field of constructional engineering, and provides an LNG storage tank outer tank dome concrete pressure maintaining pouring construction optimization method which comprises the following steps: S1, mounting a profile steel reticulated shell structure of a dome; s2, pressurizing in the tank; s3, dome concrete is poured in a partitioned mode, the dome concrete is divided into a plurality of annular areas Bi (i = 1,..., j, j is larger than or equal to 4) from outside to inside, the annular area B1 located at the edge of the dome is poured by the first circle of concrete, and the annular area Bi located in the center of the dome is poured by the ith circle of concrete; and S4, maintenance work is carried out, when the concrete strength of the whole dome is maintained to reach 80% of the design strength, pressure relief is carried out in the tank, and pressure maintaining is finished. According to the method, the construction method that pressure is maintained in the tank body and the dome concrete is poured in circles without layering is adopted, the problem that the concrete pouring pressure is too large is solved, construction joints are avoided, the integrality of the dome concrete structure is improved, the anti-seismic property of the structure is enhanced, meanwhile, the construction progress is greatly accelerated, and the cost is saved.
本发明属于建筑工程领域，提供一种LNG储罐外罐穹顶混凝土保压浇筑施工优化方法，包括以下步骤：S1、穹顶的型钢网壳结构安装；S2、罐内增压；S3、分区浇筑穹顶混凝土，将穹顶混凝土由外至内分为多个环形区域Bi(i＝1,……,j,j≥4)，位于穹顶边缘的环形区域B1为第1圈混凝土浇筑，位于穹顶中心的环形区域Bi为第i圈混凝土浇筑；S4、开展养护工作，当整个穹顶混凝土强度养护达到设计强度80％时，进行罐内卸压，保压结束。本发明采用一种罐体内部保压，穹顶混凝土分圈不分层浇筑施工工法，不但解决了混凝土浇筑压力过大的问题，并避免施工缝的出现，增加了穹顶混凝土结构的整体性，增强了结构的抗震性能，同时大大加快了施工进度，节约了成本。
LNG storage tank outer tank dome concrete pressure maintaining pouring construction optimization method
The invention belongs to the field of constructional engineering, and provides an LNG storage tank outer tank dome concrete pressure maintaining pouring construction optimization method which comprises the following steps: S1, mounting a profile steel reticulated shell structure of a dome; s2, pressurizing in the tank; s3, dome concrete is poured in a partitioned mode, the dome concrete is divided into a plurality of annular areas Bi (i = 1,..., j, j is larger than or equal to 4) from outside to inside, the annular area B1 located at the edge of the dome is poured by the first circle of concrete, and the annular area Bi located in the center of the dome is poured by the ith circle of concrete; and S4, maintenance work is carried out, when the concrete strength of the whole dome is maintained to reach 80% of the design strength, pressure relief is carried out in the tank, and pressure maintaining is finished. According to the method, the construction method that pressure is maintained in the tank body and the dome concrete is poured in circles without layering is adopted, the problem that the concrete pouring pressure is too large is solved, construction joints are avoided, the integrality of the dome concrete structure is improved, the anti-seismic property of the structure is enhanced, meanwhile, the construction progress is greatly accelerated, and the cost is saved.
本发明属于建筑工程领域，提供一种LNG储罐外罐穹顶混凝土保压浇筑施工优化方法，包括以下步骤：S1、穹顶的型钢网壳结构安装；S2、罐内增压；S3、分区浇筑穹顶混凝土，将穹顶混凝土由外至内分为多个环形区域Bi(i＝1,……,j,j≥4)，位于穹顶边缘的环形区域B1为第1圈混凝土浇筑，位于穹顶中心的环形区域Bi为第i圈混凝土浇筑；S4、开展养护工作，当整个穹顶混凝土强度养护达到设计强度80％时，进行罐内卸压，保压结束。本发明采用一种罐体内部保压，穹顶混凝土分圈不分层浇筑施工工法，不但解决了混凝土浇筑压力过大的问题，并避免施工缝的出现，增加了穹顶混凝土结构的整体性，增强了结构的抗震性能，同时大大加快了施工进度，节约了成本。
LNG storage tank outer tank dome concrete pressure maintaining pouring construction optimization method
一种LNG储罐外罐穹顶混凝土保压浇筑施工优化方法
ZHAO LIJIA (Autor:in) / WANG ZHENYU (Autor:in) / ZHANG DIAN (Autor:in) / WANG YU (Autor:in) / YANG TAO (Autor:in)
19.08.2022
Patent
Elektronische Ressource
Chinesisch
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