地基基础施工图设计及审查要点(国外英文资料).doc

地基基础施工图设计及审查要点(国外英文资料) Key points of foundation construction drawing design and review your position: building Wen Yuan project management Design drawings of subgrade foundation and main points for examination 2007-10-17 10:47 Page function [font: large, medium, small] [Print] [off] Design drawings of subgrade foundation and main points for examination Buried depth of foundation 1., natural foundation: take full advantage of brown yellow sticky soil layer as a bearing layer (on: 5.2.1-2), generally buried in 2 layers of soil: 2. box foundation: generally take 1 / 8~1 / 12 of building height (above: 5.2.2); 3. the buried depth of the slab at the top of the cap plate of the simplified structure of the high-rise building should not be less than 1 / 20 of the building height (upper barrel: section 7.1.4); Four Raft and box foundations of tall buildings. The embedded depth on the natural foundation shall not be less than 1 / 15 of the building height, and the embedment depth of the pile raft and pile box foundation shall not be less than 1 / 18~1 / 20 of the building height (state: article 5.1.3); 5. The foundation of different buried depth: two. The depth of the foundation is 1 / 2 of the distance between the bases (two: 5.2.3-2); The 6. trench excavation, should check slot (in section 10.1.1). Two, basic type selection 1. independent basis: (1) the ratio of length and width of rectangular foundation should be less than or equal to 3 (above: Clause 5.4.1); (2) the step height of the ladder foundation shall be 300~500, and the edge height of the tapered foundation shall not be less than 200, the slope shall be no more than 1:2 (above: 5.4.2); (3) the cup (according to the insertion depth: table 5.4.6) selection, should also meet the reinforcement anchorage length and considering the stability of column hoisting the insertion depth is greater than or equal to 0.05 times the column length (: 5.4.6). 2. strip foundation (reinforced concrete) (1) the thickness of the strip f