混凝土擋土墻工程施工技術.rar
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混凝土擋土墻工程施工技術
摘要： 混凝土擋土墻工程施工技術
關鍵詞： 擋土墻 施工
1、基槽挖土方：本工程挖基槽土方采用挖掘挖機及人工配合進行開挖。挖基配合墻體施工分段進行，先測量放線，定出開挖中線及邊線，起點及終點，設立樁標，注明高程及開挖深度，用1m3反鏟挖掘機開挖，多余的土方裝車外運棄土。在施工過程中，應根據實際需要設置排水溝及集水抗進行施工排水，保證工作面干燥以及基底不被水浸。
2、地基處理：當挖基發現有淤泥層或軟土層時，需進行換土處理，報請監理工程師及業主批準后，才進行施工。
3、碎石墊層施工：根據設計圖紙現澆鋼筋砼擋土墻。基底鋪20公分厚碎石墊層，并用打夯機夯入地基土。以便增加基底摩擦系數。予制擋土墻的基礎墊層為C10砼墊層10公分厚。
4、鋼筋安裝：
現澆鋼筋基礎先安裝基礎鋼筋，預理墻身豎向鋼筋，待基礎澆灌砼完后且砼達到2.5Mpa后，進行墻身鋼筋安裝。
預制鋼筋砼擋土墻的基礎鋼筋分二次安裝，第一次安裝最底層的鋼筋，基礎達到一定強度，安裝好預制墻身后，再安裝第二階的基礎鋼筋。
5、現澆砼基礎：按擋土墻分段長，整段進行一次性澆灌，在清理
Construction of concrete retaining walls
Abstract: Construction of concrete retaining walls
Key words: retaining wall
1, the base slot earth digging: dug foundation trench of the project by digging earth digging machine and carry out excavation and artificial. Sub-base with the wall construction digging carried out the first measurement and setting, set the center line and sideline excavation will start and finish, set up piles marked, indicate the height and depth of excavation, with 1m3 backhoe excavation, excess Sinotrans spoil earth loading. During the construction process, should be set according to actual needs for construction of drains and drainage catchment Anti ensure face drying and will not be flooding the basement.
2, ground: When the excavation base layer or the soft mud found in soil, the need for changing soil, reported to the supervising engineer and owner approval only after the construction.
3, gravel cushion construction: According to the design drawings situ reinforced concrete retaining wall. Shop 20 cm thick gravel base cushion, and rammed into the ground with earth tampers. In order to increase the basal friction coefficient. Retaining wall to the foundation system for the C10 concrete cushion cushion 10 cm thick.
4, steel installation:
Reinforced base to install the base steel, pre-handling vertical wall reinforcement, pouring concrete to be finished and the concrete foundation to reach 2.5Mpa was conducted after the installation of reinforced walls.
Prefabricated steel reinforced concrete retaining wall basis for sub-second install, first install the bottom of the steel, base reaches a certain intensity, pre-installed behind the wall, then install the second phase of the base steel.
5, Place Concrete Foundation: According to a long section of retaining walls, the whole one-time watering, cleaning up