施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2014年
19期
61-64
,共4页
桩基础%管桩%静压桩%承载力%施工技术
樁基礎%管樁%靜壓樁%承載力%施工技術
장기출%관장%정압장%승재력%시공기술
piles%pipe piles%static pressure piles%bearing capacity%construction
为了解决浅强持力层预应力管桩单桩承载力和桩身强度匹配问题，采用端承为主、摩擦为辅的桩型设计，以桩身允许抗压强度作为终压值PU和试验检测极限值的依据，通过探孔、静压、送桩、桩尖持力层强挤密、终压值控制、稳压和注浆技术，在相同桩型、桩长和压桩工艺条件下提高单桩承载力30％～40％，有效减少桩基初始和不均匀沉降，从根本上解决资源浪费和节约桩基设计、施工成本。
為瞭解決淺彊持力層預應力管樁單樁承載力和樁身彊度匹配問題，採用耑承為主、摩抆為輔的樁型設計，以樁身允許抗壓彊度作為終壓值PU和試驗檢測極限值的依據，通過探孔、靜壓、送樁、樁尖持力層彊擠密、終壓值控製、穩壓和註漿技術，在相同樁型、樁長和壓樁工藝條件下提高單樁承載力30％～40％，有效減少樁基初始和不均勻沉降，從根本上解決資源浪費和節約樁基設計、施工成本。
위료해결천강지력층예응력관장단장승재력화장신강도필배문제，채용단승위주、마찰위보적장형설계，이장신윤허항압강도작위종압치PU화시험검측겁한치적의거，통과탐공、정압、송장、장첨지력층강제밀、종압치공제、은압화주장기술，재상동장형、장장화압장공예조건하제고단장승재력30％～40％，유효감소장기초시화불균균침강，종근본상해결자원낭비화절약장기설계、시공성본。
In order to resolve the shallow strong supporting layer prestressed pipe pile capacity and pile strength matching problem, this paper adopted end bearing friction supplemented pile design on the base of the final pressure value PU and detection limit value. Through exploring holes, static pressure, sending piles, pile tip bearing stratum strong compaction, final pressure value control, regulation and grouting technology, under the same type of pile, pile length and pile pressure conditions, this kind of design can increase the pile bearing capacity of 30% to 40%, effectively reduce the initial pile and uneven settlement, fundamentally solve the dilemma of waste of resources and finally meet the requirement of conservation of pile design and low construction costs.
