第
37
卷第
5
期
2015
;'1'
9
月
南京
L
业大学学去
fi
(自然科学版)
JOURNAL
OF
NANJIN(;
TECH
lJ
NIVERSJTY
(Nalura]
Scien
川
Edition)
doi:
1O
.3969/j.iss
lI
.1671-7627.20 15.05.015
输电杆塔结构新型桩-板复合基础下压
承载力特性模拟分析
倪辉辉张大长
l
李布辉
2
岳健广
l
(1.南京工业大学土木工程学院,江苏南京
211800;
2.
河海大学土木与交通工程学院,江苏南京
210012)
Vo
l.
37
No.5
Sep.
2015
摘
要:为了研究新型桩一板复合基础受下压荷载时,基础的承载性能及桩土互相作用的机制,应用有限元软件开
展了大板基础、羊桩基础和桩板复合基础的下压承载力模拟分析。研究表明:新型桩板复合基础的荷载沉降曲
线为主主降型曲线,下压荷载作用过程中,桩率先发挥其承载力,当板乐地基土达到承载力极限时,桩板复合基础达
到极限承载力。结合现有复合桩基的相关理论,提出了一种基于羊桩极限承载力
P
的设计方法,适用于新型桩
板复合基础。
关键词:复合桩基;模拟分析;荷载分担比例;承载机制;设计方法
中图分类号:
TU473
文章编号:
1671-7627 (2015)
05-0092-05
Simulation analysis on compressive-load-bearing capacity
of
new plate-pile foundation
in
transmission tower
NI
Huihui
1 ,
ZHANG
Dachang
1
,
LI
Buhu?
,
YUE
Jianguang
1
(
1.
College
of
Civil
Engineering ,
Nanjing
Teeh
University
,
Nanjing
211800 , China;
2.College
of
Civil
and
Transportation Engineering ,
Hohai
University ,Nanjing 210012 ,China)
Abstract:
To
study
the
compressive
load carrying
capacity
and
the
mechanism
of
interaction
of
piles
and
soil
when
the
new
plate-pile
foundation
subjected
to compressive
load
,
the
nonlinear
finite
element
analysis on
slab
base
foundation
,
single-pile
foundation
and
new
plate-pile
foundation were
carried
ou
t.
The
results
showed
that
the
load-settlement
curve
of
the
new
plate-pile
foundation
decreased
slowly.During
the
process
of
loading
,
loadcarrying
capacity
of the
pile
was
the
first to
reach
its limit state.
When
the
loadcarrγing
capacity
of
the
foundation soil on
the
plate
reached
limit
state
,
the
new
plate-pile
foundation
reached
to its
ultimate
load
carrying
capacity.
Based
on
the
relevant
theory of existing composite
pile
foundation , a
design
method
on
account
of
single-pile
limit
load-bearing
capacity
of
Pu
was
proposed
,
and
was
applied
to new
plate
卢
pile
foundation.
Key
words:
composite
pile
foundation;
simulation
analysis;
load
sharing
ratio;
load
bearing
mechanism;
design
method
收稿日期,
2014-11-01
基金项目·江苏省科技厅前!V
; t
联合研究项目(
ßY2014005
一
11)
作者简介:倪辉辉
(1989
一)
.男,江苏准安人,硕士,主要研究方向为钢结构;张大长(联系人)
.教授,
E-mail:
【
d
肚
l
忙巳口
Z
油
h
】
lan
引用本文:倪饵辉:炳辉张大长嘈;李李布炳辉
1'.
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庇
l
巨;承载力特性模拟分析[
J
川J.r阵南
i
句
J
京工业大学学报:
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白
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1
学宇)版恨,
2
却
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巳
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37(5) :92-96