土方工程试验段施工方案.doc

土方工程试验段（K31＋945~K32＋189.6）
施　工　方　案
一、 简述
第五标路基土方工程试验段，经项目部现场实地考查后，选择在二工区K32＋189.6~~K32+485段进行，该段靠近3＃取土坑，，可以就近取土。
施工流程安排
原地面高程复测　　 路基、取土坑清表　　 填前压实　　土料开采、运输、填筑、压实　　　总结施工参数　　　报监理工程师批准后作为土方填筑施工的控制依据。
二、 具体施工组织                                                                                                                                                 
1、原地面高程复测
对业主、监理提供导线控制点和高程基准点，使用全站仪和自动安平水准仪进行联测，按JTJ061－99等相关技术规范的测理精度要求，校核各导线点的坐标和水准点的高程，若复测误差不符合精度要求时，报业主、监理进行补测，重新校核合格后，方可作为恢复定线测量的依据。
利用校核合格并经监理批准使用的控制点，采用全站仪极坐标法恢复路基中线，根据设计图纸民尺寸及施工规范要求，放出路基中线。之后复测原地面高程并报监理工程师复核。
2、清表
监理工程师复核原地面高程之后进行清表工作。
清表深度20－30cm，将上层表土（杂草、淤泥及作物根系）推至路基右侧摊平，将下层表土作为路基左侧段便道利用
Earthworks test section (K31 +945 ~ K32 +189.6)
Facilities work plan was
A brief account of
Fifth standard test section subgrade earthwork, site field visits by the project department, choose the second work area K32 +189.6 ~ ~ K32 +485 paragraph, the paragraph near the 3 # to take the pit, can be dug nearby.
Arrangements for the construction process
Retest the original ground elevation embankment, clearing the table to take the pit fill material compacted soil before the extraction, transport, filling, compaction parameters summarized construction supervision engineers reported the approval of the control as a basis for earthwork embankment construction.
Second, the specific construction organization
1, the original ground elevation retest
Owners, to provide lead supervision control point and elevation reference point, using total station and automatic leveling and joint Ping test, according to JTJ061-99 technical specifications and other related management precision measuring and checking the coordinates of each point and standard wire points elevation, Ruofu measurement error does not meet accuracy requirements, the newspaper owners, and supplementary supervision for re-checking of qualified only after the restoration of alignment as the basis for measurement.
Use checking of qualified and approved for use by the supervisory control points, polar coordinates using Total Station Restoration and embankment center line, according to the design drawings and construction specifications size people, let embankment center line. After the retest of the original ground elevation shall be reported to supervision engineer for review.
2, clear the table
Supervising Engineer after review of the original ground elevation work clearing the table.
Clear the table depth of 20-30cm, the upper surface (grass, mud and plant roots) to promote the right to share the subgrade level, will be the lower left section of the topsoil as roadbed pavement use