什么是钻孔埋桩 其工艺? 不是钻孔灌注桩,属于沉入桩

2025-03-15 17:58:02
推荐回答(4个)
回答1:

预先钻孔沉桩法。

大致工法是:先钻孔(同钻孔灌注桩成孔,干作业或泥浆护壁),排土或排渣(也有不排土的),然后将预制桩插入孔内。插入分两种方式,如果孔径比桩径小,成孔后预制桩要用锤击或震动等方式打进去。

如果孔径比桩径大,预制桩就可以直接插入孔内,为了保证摩擦力,埋桩之前可在孔内预先填充砂浆、水泥浆、膨润土与水泥浆混合液等。前者往往称为钻孔打入式,那么后者应该就是钻孔埋桩了。

简介

钻孔深度距持力层1 ~ 2m时停止钻孔,锤击至预定持力层深度。如遇有地下水,则可通过钻注浆孔,然后将桩插入钻孔内再锤未打大。

钻孔直径应小于预制桩径,例如打预制300mm X 300mm方桩,用φ300mtn钻孔径适宜。桩架以双导向桩架合宜,其双导向杆一面悬挂钻孔螺旋杆可以先钻孔,另一导杆可悬挂柴独锤,钻孔完成即吊桩锤击沉入,无需两套机械。

回答2:

如果我没猜错的话,应该是预先钻孔沉桩法。大致工法是: 先钻孔(同钻孔灌注桩成孔,干作业或泥浆护壁),排土或排渣(也有不排土的),然后将预制桩插入孔内。插入分两种方式,如果孔径比桩径小,成孔后预制桩要用锤击或震动等方式打进去;如果孔径比桩径大,预制桩就可以直接插入孔内,为了保证摩擦力,埋桩之前可在孔内预先填充砂浆、水泥浆、膨润土与水泥浆混合液等。前者往往称为钻孔打入式,那么后者应该就是钻孔埋桩了。

回答3:

管桩分为后张法预应力管桩和先张法预应力管桩,预应力混凝土管桩(PC管桩)和预应力混凝土薄壁管桩(PTC管桩)及高强度预应力混凝土管桩(PHC管桩). 钻孔灌注桩系是指在工程现场通过机械钻孔、钢管挤土或人力挖掘等手段在地基土中形成桩孔,并在。

回答4:

沉入桩:锤击沉桩,振动沉桩,静力压桩,钻孔埋桩。都是将预制桩打入土体中

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