软土中大直径顶管管道受力特性测试

doi:10.16183/j.cnki.jsjtu.2014.11.001

上海交通大学学报 ›› 2014, Vol. 48 ›› Issue (11): 1503-1509.doi: 10.16183/j.cnki.jsjtu.2014.11.001

所属专题：王建华教授学报发文专辑

• • 下一篇

软土中大直径顶管管道受力特性测试

刘翔¹(), 白海梅², 陈晓晨², 陈锦剑¹, 王建华¹()

^1.上海交通大学土木工程系，上海　200240
^2.上海市城市排水有限公司，上海　200233

收稿日期:2013-11-29 出版日期:2014-11-01 发布日期:2014-11-28
作者简介:刘翔（1986-)，男，江苏省宿迁市人，硕士生，主要研究方向为大直径；混凝土顶管工程．E-mail: 357397230@qq.com.|王建华（联系人），男，教授，博士生导师，电话（Tel.):021-34207002;E-mail:wjh417@sjtu.edu.cn.
基金资助:
上海市科学技术委员会重点项目(11231202400);上海市科学技术委员会科研项目(12DZ2252300)

Field Test of Mechanical Properties of Large Diameter Concrete Jacking Pipe in Soft Soil

LIU Xiang¹(), BAI Hai-mei², CHEN Xiao-chen², CHEN Jin-jian¹, WANG Jian-hua¹()

^1.Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
^2.Shanghai Municipal Sewerage Co. , Ltd. , Shanghai 200233, China

Received:2013-11-29 Online:2014-11-01 Published:2014-11-28

摘要/Abstract

摘要：

采用现场实测方法，对深覆软土、长距离顶进、外径4.64 m钢筋混凝土顶管的管壁接触压力和环向钢筋受力进行了测试，并与已有文献研究进行对比分析．结果表明：顶管在良好泥浆套中顶进时，管壁接触压力整体分布较均匀，注浆时呈突然增大变化，停顶后逐渐恢复正常水平；管道环向钢筋以受压为主、应力不大，其变化由管道轴向偏移和注浆控制，测试阶段管道受力状态以偏心受压为主；管壁接触压力实测值与按规程计算的设计值相比，管顶处相近、管侧处实测值略大、管底处实测值较小，规程的土压力分布模式用于管道设计计算偏于保守．

关键词: 大直径顶管, 管道受力, 现场测试

Abstract:

Annular reinforcing steel bar stress and pipe-soil contact pressure during pipe-jacking were monitored on the spot. The differences of the active contact pressure from the related research results were analyzed. The results show that when the pipe is pulled in the stable slurry interface which has been already formed, and since the test pipe was pulled into the tunnel bore, the distribution of contact pressure tends to be uniform and remain stable. But the contact pressure will increase suddenly when grouting, and return to normal gradually after stopping pulling. The lateral force of the pipe is also stable, though not big, mainly showing compressive stress, whose changing is controlled by pipeline axial deviation and grouting. Therefore, the pipe is in a state of eccentric compression in the test. Compared with the results of the field test, the specification is rather conservative. Besides, the active distribution of contact pressure is close to the load model developed by Lei Han, which can be used to optimize pipeline structure design.

Key words: large diameter jacking-pipe, soil-pipe contact pressure, site monitoring

中图分类号:

TU432

刘翔, 白海梅, 陈晓晨, 陈锦剑, 王建华. 软土中大直径顶管管道受力特性测试[J]. 上海交通大学学报, 2014, 48(11): 1503-1509.

LIU Xiang, BAI Hai-mei, CHEN Xiao-chen, CHEN Jin-jian, WANG Jian-hua. Field Test of Mechanical Properties of Large Diameter Concrete Jacking Pipe in Soft Soil[J]. Journal of Shanghai Jiao Tong University, 2014, 48(11): 1503-1509.

图/表 18

表1

图1

图2

图3

图4

图5

图6

图7

图8

图9

图10

表2

图11

图12

图13

图14

表3

图15

参考文献 12

[1]	王承德. 近十年来超长距离顶管发展概况[J]. 特种结构, 1997, 14(4): 16-21.
	WANG Cheng-de. Development of long distance pipe jacking in nearly a decade[J]. Special Structures, 1997, 14(4): 16-21.
[2]	Milligan G W E, Norris P. Site based research in pipe jacking-objectives, procedures and a case history[J]. Tunnelling and Underground Space Technology, 1996, 11(1): 3-24.
[3]	Milligan G W E, Norris P. Pipe-soil interaction during pipe jacking[J]. Geotechnical Engineering, 1999, 137(1): 27-44.
[4]	潘同燕. 大口径急曲线顶管施工力学分析与监测技术研究[D]. 上海: 同济大学, 2000.
[5]	魏纲, 徐日庆, 余剑英, 等. 顶管施工中管道受力性能的现场试验研究[J]. 岩土力学, 2005, 26(8): 1273-1277.
	WEI Gang, XU Ri-qing, YU Jian-ying, et al. Site-based experimental study on pipe behavior during pipe jacking[J]. Rock and Soil Mechanics, 2005, 26(8): 1273-1277.
[6]	王承德. 顶进管道受力分析[J]. 特种结构, 2006, 23(4): 87-89.
	WANG Cheng-de. Analysis of jacking pipe stress[J]. Special Structures, 2006, 23(4): 87-89.
[7]	黄吉龙, 陈锦剑, 王建华, 等. 大口径顶管顶进过程的数值模拟分析[J]. 地下空间与工程学报, 2008, 4(3): 489-493.
	HUANG Ji-long, CHEN Jin-jian, WANG Jian-hua, et al. Numerical analysis of large diameter Pipe-jacking[J]. Chinese Journal of Underground Space and Engineering, 2008, 4(3): 489-493.
[8]	雷晗. 大直径砼顶管工程中土与结构的相互作用分析[D]. 上海: 上海交通大学, 2012.
[9]	CECS 246: 2008，给水排水工程顶管技术规程[S].
[10]	ATV A-161. Structural calculation of drive pipes[S].
[11]	ASCE 27-00. Standard practice for direct design of precast concrete pipe for jacking in trenchless construction[S].
[12]	雷晗, 陈锦剑, 王建华, 等. 大直径砼顶管的管道受力特性分析[J]. 上海交通大学学报, 2011, 45(10): 1493-1497.
	LEI Han, CHEN Jin-jian, WANG Jian-hua, et al. Analysis on performance of large diameter concrete jacking pipe[J]. Journal of Shanghai Jiaotong University, 2011, 45(10): 1493-1497.

土层名称	w／％	γ／（kN·m^-3）	e₀	c／kPa	i／（°）	E_s／MPa
①素填土	29.8	18.8	0.85	22	15.3	5.58
②₃砂质黏土	30.4	18.6	0.85	3	30.4	9.22
③粉质黏土	42.6	17.5	1.18	12	13.4	3.32
③_T砂质粉土	29.8	18.8	0.82	2	30.3	11.42
④淤泥质黏土	50.9	16.8	1.43	11	10.8	2.32
⑤₁黏土	40.8	17.6	1.16	15	14.0	3.46

编号	顶进期间				顶通后			规程^[9]	文献[8]
编号	最小	最大	均值	顶通日	3月	4月	7月	规程^[9]	建议模式1	建议模式2
T1-1	162	318	234	260	174	163	163	302.93	253.97	172.66
T1-2	-	-	-	-	-	-	-	185.50	221.31	163.84
T1-3	165	254	191	190	200	193	187	136.86	152.36	146.20
T1-4	142	277	177	200	151	147	145	199.29	196.84	145.59
T1-5	111	218	161	187	157	157	160	144.98	144.98	144.98
T1-6	124	198	168	184	145	143	146	199.29	196.84	145.59
T1-7	157	220	185	208	162	157	153	136.86	152.36	146.20
T1-8	186	240	215	234	198	188	177	185.50	221.31	163.84

点位	本文大直径顶管（H／D＝2.15）				文献[5]中小直径顶管（H／D＝2.28）
点位	静止土压力／kPa	实测理论应力比	实测应力／kPa	无量纲应力比	静止土压力／kPa	实测理论应力比	实测应力／kPa	无量纲应力比
T1-5	178	1.10	161	1.00	64	0.97	66	1.00
T1-7	149	0.81	185	1.15	52	0.35	150	2.72
T1-1	261	1.12	234	1.45	92	?	?	?
T1-3	149	0.78	191	1.19	52	0.39	135	2.05

软土中大直径顶管管道受力特性测试

Field Test of Mechanical Properties of Large Diameter Concrete Jacking Pipe in Soft Soil

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 18

参考文献 12

相关文章 1

编辑推荐

Metrics

本文评价