静压预制管桩施工技术.rar

静压预制管桩施工技术

一、桩的设计要求
本工程采用预应力高强砼管桩,桩径为Ф400，壁厚为90MM，砼C80，配筋AB型，共计105根。拟采用ZYJ-500液压静力压桩，管桩要求单桩竖向承载力标准值为1200KN，桩长约20m左右，桩尖持力层为强风化花岗岩，桩的承载力以端承为主，沉桩控制以贯入度为主，桩长为辅。
ZYJ－500液压静力压桩机技术参数：
压桩力、压桩速度
主压桩缸单独工作：压桩力230TF，最大压桩速度：2.8M/MIN
主副压桩缸同时工作:压桩力500.8TF，最小压桩速度:0.8M/MIN
Statically Pipe Construction

A pile of design requirements
The project uses high-strength prestressed concrete piles, pile diameter Ф400, wall thickness of 90MM, concrete C80, reinforcement AB, a total of 105. To be adopted ZYJ-500 hydraulic static piling, pile load capacity required standard value 1200KN, about 20m long pile, the pile tip bearing stratum for the weathered granite, to end bearing capacity of pile based , pile driving control the penetration into the main pile length supplement.
ZYJ-500 Hydraulic Static Pile Driver Technical Data:
Piling capacity, piling speed
Master cylinder pressure piling work alone: Pressure piles force 230TF, the largest piling speed: 2.8M/MIN
Main and piling into the vat of work: pressure piling force 500.8TF, minimal piling speed: 0.8M/MIN