二、施工测量方案.doc

二、工程概况
北京××科研实验大楼工程位于北京市××区××路××号，地处三环以外。建筑场地面积1761m2首层面积1809m2，总建筑面积29052m2，分主楼和裙房(裙房主要为地下环形车道)，主楼地下二层，地上十六层，结构形式为全现浇框架一简体结构。建筑物檐高59.65m，总高度为65.40m；室内外高差450mm，±0.000相当于绝对标高51.70m。
主楼：基础为平板筏基，埋深-10.75m，C15砼垫层100mm厚，底板1500mm厚。一层、二层、三层外轴线尺寸为41.16×43.96m，四至十六层外轴线尺寸为41.16×35.90m，内设四部电梯，两座楼梯。
裙房即地下环形车道，为旋转式坡道分上下层，共两座，坡度为I=9.12％，旋转外墙外半径10.46m，内墙内半径为5.74m，底板厚250mm，顶板厚250mm，墙厚260mm，出口设防倒塌棚架。
2．控制点的布置及施测
2.1  从场地的实际情况看，场地四周离建筑物在10m以上，故对布设控制点无影响。由于汽车坡道后期施工(待主体结构完工后)、南侧场地做临设及材料堆放用，所以南北向控制点集中布设在北侧原有混凝土地面上，南侧只布设远向复核控制点，施工场地不受影响，东西向控制点布设在西侧，东侧设复核控点。
2.2  布设的控制点均引向四周永久建筑物或马路上，且要求通视，采用正倒镜分中法投测轴线时或后视时均在观测范围之内。
2.3  根据甲方要求和测绘院提供的红线点形成四边形进行控制。
2.4  根据施工组织设计，对楼层进行网状控制，兼顾±0.000以上施工，设置控制轴线1、6轴，B(A轴用于地下)、F轴(G轴用于地下)及北侧汽车坡道过圆心的南北向、东西向为控制轴。
2.5  根据测绘院提供的BM1、BM2(西侧)及BM3(北侧)三点高程控制点数据(具体数据详见测绘成果资料)向建筑物四周引测固定高程控制

Second, project profiles
Beijing × × research laboratory building project in the District, Beijing × × × × × × Road No., located outside the Third Ring Road. The first floor area of 1761m2 building site area 1809m2, total construction area of 29052m2, sub-main and skirt (skirt mainly underground ring Drive), Main Building, basement level, ground 16 floor, place the framework for the whole structure of a simplified structure. Building eaves, high-59.65m, total height of 65.40m; indoor and outdoor elevation 450mm, ± 0.000 is equivalent to the absolute elevation of 51.70m.
Main: Foundation for the raft slab foundation, depth-10.75m, C15 concrete 100mm thick cushion, floor 1500mm thick. Layer, two-story, three-axis dimensions of outer 41.16 × 43.96m, 4-16 axis of the outer dimensions of 41.16 × 35.90m, equipped with four elevators, two staircases.
Skirt that is underground ring road, as the rotating points on the lower ramp, a total of two, a gradient of I = 9.12%, external rotation radius of 10.46m, within a radius of inner wall 5.74m, floor thickness 250mm, 250mm thick roof , thick and 260mm, exports collapsed scaffolding fortification.
2. Arrangement of control points and Measurement
2.1 from the site of the actual situation, around the field more than 10m away from the buildings, it had no effect on the control points laid. Since the late car ramp construction (to be completed the main structure), the south side of site design and materials to do the Pro stacking, and therefore the concentration of control points from north to south in the north of the existing concrete floor laid on the far south only to review the control points laid , construction site will not be affected, what the control points laid on the west side, east side of control points based review.
2.2 layout of control points to lead all around the permanent buildings or roads, and communications, as required, by being cast down Mirror French axis measured as the time during or after the observations were within the scope.
2.3 Institute of Surveying and Mapping under the Party requirements and provide the red line points to control the formation of quadrilateral.
2.4 According to construction design, network control on the floor for consideration to ± 0.000 over the construction, set the control axis of 1,6-axis, B (A-axis for the underground), F-axis (G-axis for the ground) and the north slope car Road through center of a circle of north-south and east-west axis for the control.
2.5 According to the Survey and Mapping Institute provided BM1, BM2 (west) and BM3 (north) three vertical control point data (see mapping data, the results of specific information) fixed to the building height control around the quoted measurement