G5170工程加油站土建施工方案.doc

土建工程施工方案
    1、施工测量
建筑物定位放线、高程控制等施工测量均应分别记录测量成果，经业主或监理单位复核认可后，方可进行下道工序施工。
1.1建筑物定位放线
根据业主提供的坐标，用经校验合格的GJ2光学经纬仪采用直角坐标法测设出建筑物平面控制网，并在控制网顶点设置半永久性控制桩，用砼予以保护。根据建筑物施工平面图，用同样方法将主轴线定于控制网上。纵、横向各设2条和4条主轴线，每条轴线为4个标识点，从而形成施工测量控制网，用以作为基础定位放线依据，其误差控在1/2000范围之内。
1.2轴线控制：
根据施工平面图和主轴线，利用经纬仪和钢尺分别用直角坐标法和内分法测定条基中心线，各开间轴线用钢卷尺量定。测设时，按常规方法进行复核，使之闭合差不超过规范规定。
1.3标高控制：
根据建设方给定的水准点，用经校验的DS3水准仪进行高程测设，在拟建房屋周围的原有建筑物阳角引测 ±0.00m控制点，标高传递采用经检定的钢卷尺沿墙角自±0.00M标高向上丈量传递，下部引上标高点不少于3点，对引上的标高用水准仪闭合，作为该标高点，测量成果记录必须及时请建设单位复查签字。
2、基础工程
2.1场地平整及清理地下障碍物
本工程大部份座落在回填土上。工程
Civil engineering construction plan
    1, construction survey
Building orientation and setting out, construction survey elevation control the outcome should be measured were recorded by the owner or authorized supervisory agencies for review only after the processes the next construction.
1.1 Building Orientation-off
According to owners of coordinates, after checking with a qualified GJ2 optical theodolite method to measure the use of a Cartesian coordinate plane control placed on buildings, and control network of semi-permanent control vertices piles, with concrete to be protected. According to the building construction plan, the main axis with the same method will be to control the Internet. Vertical, horizontal, each with two and four main axes, each axis for the four identified points, creating construction survey control network, used as a basis for positioning discharge line basis, and the error control in the 1 / 2000 range.
1.2 Axis Control:
According to the construction plan and the main axis, respectively, using theodolite and steel rule with Cartesian method and the method section within the sub-base center line axis of the bay steel tape volume set. Layout of the time, according to conventional methods of review, so that difference does not exceed specification closure.
1.3 Elevation Control:
According to the standard construction side for a given point, with the water level by checking the DS3 test set for elevation, the proposed housing in existing buildings around the cape of lead measured ± 0.00m control point, elevation pass through test using steel tape measure along the corner measured from ± 0.00M elevation pass up, the lower elevation point lead on at least 3 points on the lead with a water level elevation on the closure, as the elevation point, measuring the results records must be signed in a timely manner, please review the construction unit.
2, basic engineering
2.1 site formation and clearance of underground obstacles
Most of this project is located in the backfill. Project