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首页-新闻资讯-基坑支护方式,钢板桩与灌注桩的工艺流程及特点!

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来源:http://www.jnlsgbz.com/ 日期:2021-07-13 发布人:lasen
一、钢板桩排桩墙
1、 Steel sheet pile row pile wall
当基坑较深、地下水位较高且未施工降水时,采用板桩作为支护结构,既可挡土、防水,还可防止流砂的发生。
When the foundation pit is deep, the groundwater level is high and the dewatering is not carried out, the sheet pile is used as the supporting structure, which can not only protect the soil and water, but also prevent the occurrence of quicksand.
工艺流程:
technological process:
测量、放线——安装导架——钢板桩打设——基础施工——钢板桩拔除
Survey and setting out - Installation of guide frame - steel sheet pile driving - foundation construction - steel sheet pile pulling out
特点:
characteristic:
①成品制作,可反复使用;
① It can be used repeatedly;
②施工简便,但施工有噪声;
② The construction is simple but noisy;
③刚度小,变形大,与多道支撑结合,在软弱土层中也可采用;
③ Small stiffness, large deformation, combined with multi-channel support, can also be used in soft soil;
④新的时候止水性尚好,如有漏水现象,需增加防水措施
④ When new, the water seal is good. If there is water leakage, waterproof measures should be added
                          钢板桩施工租赁
二、灌注桩排桩墙
2、 Cast in place pile row wall
开挖前在基坑周围设置砼灌注桩,桩的排列有间隔式、双排式和连续式,桩顶设置冠梁、锚桩或拉杆。施工方便、安全度好、费用低。适于开挖面积大、深度大于6m、不允许放坡、邻近有建(构)筑物的基坑支护。
Before excavation, concrete cast-in-place piles are set around the foundation pit. The piles are arranged in interval type, double row type and continuous type. Crown beam, anchor pile or pull rod are set at the top of the pile. Convenient construction, good safety and low cost. It is suitable for foundation pit support with large excavation area, depth more than 6m, no slope and adjacent buildings (structures).
工艺流程:
technological process:
测量、放线——桩机就位——钻孔——吊装钢筋笼——浇筑混凝土——桩机移位——桩养护——破桩——冠梁施工
Survey and setting out - pile machine in place - Drilling - hoisting reinforcement cage - pouring concrete - pile machine displacement - pile maintenance - Broken Pile - crown beam construction
特点:
characteristic:
①刚度大,可用在深大基坑;
① It has high rigidity and can be used in deep and large foundation pit;
②施工对周边地层、环境影响小;
② The construction has little influence on surrounding strata and environment;
③需降水或和止水措施配合使用,如搅拌桩、旋喷桩等
③ It needs dewatering or combined with water stop measures, such as mixing pile, jet grouting pile, etc
钻孔灌注桩围护结构经常与止水帷幕联合使用,止水帷幕一般采用深层搅拌桩。也可以采用高压旋喷桩止水帷幕。近年来,素混凝土桩与钢筋混凝土桩间隔布置的钻孔咬合桩也有较多应用,此类结构可直接作为止水帷幕。
The retaining structure of cast-in-place bored pile is often combined with the water stop curtain, and the deep mixing pile is generally used for the water stop curtain. High pressure jet grouting pile waterproof curtain can also be used. In recent years, the bored occlusive pile with plain concrete pile and reinforced concrete pile arranged at intervals is also widely used, and this kind of structure can be directly used as the water stop curtain.
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