施工组织设计英文版Construction Scheme for Subgrade Works

CHINA HARBOUR ENGINEERING COMPANY

LIMITED

Construction Scheme

replacement treatment

Rio Grande BridgeK0+150～K0+240soft foundation

Writer:_______________ Chief: ____________ Unit:_________________ Date:_________________

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Directory

1.project profile ------------------------------------------------------------------ 3 2.Construction preparation ---------------------------------------------------- 3 3.Construction scheme --------------------------------------------------------- 4

3.1construction technology --------------------------------------------- 4 3.2construction process ------------------------------------------------- 4 3.3construction method ------------------------------------------------- 5 3.4 water ditch excavation ---------------------------------------------- 6 3.5 clearance and excavation ------------------------------------------- 6 3.6 backfill and rolling compaction ------------------------------------ 7 4. Personal and machine arrangement ------------------------------------- 8

4.1 labor arrangement --------------------------------------------------- 8 4.2 machine and equipment -------------------------------------------- 9 5.

Quality control precautions ----------------------------------------- 10 6.1 safety protection precautions ----------------------------------- 14 6.2Environment protection precaution ---------------------------- 17 6. safety and environmental protection precautions ------------------ 13

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1.project profile

The soft foundation of this project is K0+150-K0+340, the surface is plough soil, soft plastic sludge fine sands with the max thickness of 3.0m, and backfilled with min thickness 0.3m and width 70m and the final elevation should not lower than the original ground, the backfilling material should adopt water permeability material like gravel and roadbed should be filled directly after that with a thickness 2.3~7.5m.

According to the engineer geology of soft layer and roadbed elevation in design, it should take a comprehensive dispose to soft section, including first excavation of vertically and horizontally drain ditch, surface water, and backfill the water permeability material.

The main project quality is soft foundation excavation 5700m3 and water permeability material gravel 5700m3. 2.Construction preparation

It should check the onsite or underground obstacles like underground cables, high-tension wire, communication cables and clear them out according to conditions.

2.1“four supplies and one leveling ”

Supply of water, electricity and road and leveled ground should be done on the construction site. The construction water, domestic water should adopt local well water; the construction and household power should be supplied by special line; the shortcut should be used as road and be sure that varies of cars and person can pass through with a regular maintenance to keep unblocked.

2.2technology preparation

The construction drawings should be reviewed first and explained to the construction stuff after approval.

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2.3material preparation

It should investigate the backfilling material resources around and make storage to make sure the continual construction. 3.Construction scheme 3.1construction technology

Review the construction drawings design and relevant documents—construction preparation (store exchange fill water permeability material)—survey layout—drainage ditch set—soft soil and sludge removal—foundation check—exchange fill the water permeability material by layer—compact by layer 3.2construction process

施工准备测量放样开挖水沟软基开挖检查合格回填碾压验收合格下一层施工4

3.3construction method

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