The role of foundation piles

Base pile is a technical term in building structure, to figure out its meaning, you must understand what is pile foundation, group pile foundation and monopile foundation. Pile foundation: by the pile and connected to the top of the pile bearing platform *** with the composition of the foundation. If the pile body is buried in the soil, the bottom of the bearing platform and soil contact, is called low bearing platform pile foundation; If the pile body exposed to the ground and the bottom of the bearing platform is located above the ground, is called high bearing platform pile foundation. The construction pile foundation is usually low-bearing pile foundation.

Chinese name foundation pile spelling sound jīzhuāng foreign name foundation pile class class in the building structure of the terminology

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1 Introduction

2 Characteristics

1 Introduction

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Base piles by the base piles and the top of the pile is coupled with the bearing *** with the composition. Composition. If the pile body is completely buried in the soil and the bottom of the bearing platform is in contact with the soil, it is called low-bearing pile foundation; if the pile body is exposed to the ground and the bottom of the bearing platform is located above the ground, it is called high-bearing pile foundation. Construction pile foundation is usually low-bearing pile foundation. In high-rise buildings, pile foundation is widely used.　　

2 characteristics

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(1) pile support in hard (bedrock, dense pebble gravel layer) or hard (hard plastic clay, medium dense sand, etc.) bearing layer, has a high vertical single pile bearing capacity or group pile bearing capacity, enough to bear all the vertical loads of the high-rise building (including eccentric loads).

(2) The pile foundation has great vertical single-pile stiffness (end-bearing pile) or group stiffness (friction pile), does not produce excessive uneven settlement under the influence of self-weight or adjacent loads, and ensures that the inclination of the building does not exceed the permissible range.

(3) By virtue of the huge lateral stiffness of single pile (large diameter pile) or group pile foundation and its overall overturning resistance, it can resist the horizontal load and moment load caused by wind and earthquake, and ensure the overturning stability of the high-rise building.

(4) the pile body through the liquefiable soil layer and support in the stable solid soil layer or embedded in the bedrock, in the earthquake caused by the shallow soil liquefaction and subsidence of the case, the pile foundation by virtue of the deep solid soil layer still has enough compressive and pull-out bearing capacity, so as to ensure the stability of the high-rise building, and does not produce too much subsidence and tilt. Commonly used piles are precast reinforced concrete piles, pre-stressed reinforced concrete piles, drilled (punched) piles, manually bored piles, steel pipe piles, etc., and their applicable conditions and requirements are stipulated in the Technical Specification for Pile Foundation of Buildings.

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