soil stratum

Practical Technology of Using Excavated Pile Pier Foundation in Complex Soil Stratum

复杂土层中采用挖孔桩墩基础的实用技术

Based on the structure of a sluice, the author chooses a frame structural model and uses the Winkle assumption. A spring model simulates the effects of the ground base on the soil stratum.

依据水闸的结构特点，采用框架计算模型，利用温克尔地基假设，弹簧模拟地基和两侧土的作用；

The bearing capacity of these piles consists of frictional resistance of each stratum of soil and rock, and the end bearing of rock.

桩基设计应以桩身混凝土强度、地基对桩所能提供的承载力及桩体总沉降量作为三个控制标准进行设计；

A portion of bedrock or other stratum protruding through the soil level.

露出地表的一部分基岩或其他地层.

The paper analyses the expansive soil distribution of He-An expressway affected by geological structure and stratum.

本文分析了合安高速公路沿线地区的地质构造和地层对膨胀土分布与性质的影响.

On Shallow Tunneling Method Applied in the Construction of Pedestrian Subway of Soft Soil Stratum

用浅埋暗挖法在软土地层中施工人行过街地道

The anisotropism of intensity increasement of cement soil has been put forward firstly by experimental study on the strength of soil-cement with different sites, multi-hole location, multi-stratum and different cement adulterated contents.

通过多地段、多孔位、多地层和多掺量的水泥土强度实验，提出了水泥土强度增长的各向异性问题。

The stress mechanism of bored occluding pile and its application in soft soil stratum

钻孔咬合桩的受力机理及在软土地层中的应用

This paper discusses the application of the rammed pedestal pile in thin stiff stratum in soft soil based on the engineering practice, and presents the reinforce measure of adopting thin stiff stratum as pile tip bearing stratum.

结合工程实践对夯扩桩在软土中薄硬夹层的应用进行了探讨，提出薄硬夹层作为桩端持力层的加固方法。

Up to now, the subway crossing project through Hongxu Road is a pipe-roof project with the biggest cross-section box culvert in the world. It is constructed in saturated soft soil stratum in the Beihong Road located in the middle ring-road in Shanghai.

上海市中环线虹许路北虹路下立交工程是目前世界上在饱和含水软土地层中施工的横截面最大的管幕法工程。

The filling coefficient theory was put forward, a criterion for the filling coefficient of soil stratum failure and a critical hydraulic gradient chart were formulated.

提出了填充系数理论，制订了土体渗透破坏形式的填充系数判别式和管涌临界破坏坡降计算图。

The inner-bracing soldier pile retaining system has the advantages of high reliability, no trespassing red line, strong stratum adaptability, being easy to be combined with the top-down construction method, etc*, which is widely used in deep excavation supporting system in soft soil area.

在软土地区基坑支护中，内撑式排桩支护体系由于具有较高的可靠性、不侵越红线、地层适应性强、便于与逆作法施工相结合等优点而得到广泛应用。