公路軟土地基處理的方法(編輯修改稿)
2025-06-17 06:53 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 set up in a pile during driving, can be better resisted, and the pile is less likely to be damaged during handling. Bending stresses, which can occur during driving, are also less likely to produce cracking. However, the ultimate strength in axial pression is decreased as the level of prestressing is increased. Therefore, prestressed piles are more vulnerable to damage from striking obstructions during driving. They are also difficult to cut after installation, and special techniques have to be employed. As a result they are most suitable for applications where the pile length is predictable and constant. Prestressed Concrete Pile Prestressed concrete piles require highstrength concrete and careful control during manufacture. Casting is usually carried out in a factory, where the curing conditions can be strictly regulated. Special manufacturing processes such as paction by
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