|
|
|
| Experimental study on foamed concrete as a filler of the bottom layer of high speed railway subgrade |
| ZHAO Wenhui1,2,SU Qian1,2,LI Ting1,2,HUANG Junjie1,2 |
1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
2.MOE Key Laboratory of High-Speed Railway Engineering，Southwest Jiaotong University, Chengdu 610031, China |
|
|
|
Abstract When the additional second-line is built on the soft soil areas, interference problems for the existing lines would be caused by the traditional methods.In order to solve these problems, the foamed concrete used as a filler was introduced. According to the results oftriaxial tests, the foamed concrete with the casting density of 600 kg/m3 can meet the static and dynamic conditions of the bottom layer of high-speed railway ballastless track subgrades. Using this material as the filler of the bottom layer of subgrade, large-scale indoor model tests were carried out. The results show that the subgrade structure has good dynamic stress diffusion effect when the foamed concrete is used as the subgrade filler. It has large stiffness and small plastic deformation, which guarantees small elastic deformation (dynamic displacement) and small cumulative settlement value. The foamed concrete subgrade has a good dynamic performance and long-term dynamic stability, and it can ensure the smoothness of subgrade surface, meeting the requirements of long-term service in high-speed railway.
|
|
Received: 09 November 2017
Published: 15 March 2019
|
|
|
|
[1] 周世林. 浅谈既有线扩能提速改造建设方案[J]. 铁道工程学报, 2010, 27(10): 41-44.
ZHOU Shilin. Discussion on upgrading scheme of existing railway line [J]. Journal of Railway Engineering Society, 2010, 27(10): 41-44.
[2] 左珅. 新建高铁对紧邻运营铁路路基服役状态影响研究[D]. 中南大学, 2014.
ZUO Kun. Research on effect of new-built high-speed railway on adjacent operating railway subgrade in service status [D]. Central South University, 2014.
[3] 杨元明. 既有铁路扩能改造若干问题探讨[J]. 铁道工程学报, 2010, 27(12): 1-4.
YANG Yuanming. Discussion on Problems in Upgrading of Existing Railway Line [J]. Journal of Railway Engineering Society, 2010, 27(12): 1-4.
[4] Jiang J, Lu Z, Niu Y, et al. Study on the preparation and properties of high-porosity foamed concretes based on ordinary Portland cement [J]. Materials & Design, 2016, 92: 949-959.
[5] 唐明, 徐立新. 泡沫混凝土材料与工程应用[M]. 中国建筑工业出版社, 2013.
[6] 土田孝, 藤崎治男, 巻渕正治, 等. 建設発生土を原料土とする軽量混合処理土の護岸工事への適用[J]. 土木学会論文集, 2000 (644): 13-23.
Takashi tsuchida, Haruo fujisaki, Masaharu makibuchi, et al. Use of light-weight treated soils made of waste soil in airport extention project [J]. Transactions of the Japan Society of Civil Engineers, 2000 (644): 13-23.
[7] 横田聖哉, 三嶋信雄. 気泡混合軽量土を用いた人工軽量地盤. 土と基礎, 1996, 44(5): 5-8.
Seuya yokota,Nobuo mishima. Artificiai Light Weight Ground Made of Light−Weight Soil with Mixture of Foam [J]. Soils and Foundations, 1996, 44(5): 5-8.
[8] 豊福俊泰, 三嶋信雄,田中久士. 気泡混合軽量土の品質管理法に関する研究[J]. 土木学会論文集, 2000 (658): 141-152.
Toshiyasu toyofuku, Nobuo misima, Hisashi tanaka. Studies on quality control of foamed mixture lightweight soil [J]. Transactions of the Japan Society of Civil Engineers, 2000 (658): 141-152.
[9] Simon Van Deijk. A Review of the Netherlands Approach to the Use of Foam Concrete in Holland and at Canary Wharf [J]. Concrete, 1991, 25(5): 49-54.
[10] Watabe Y, Noguchi T. Site-investigation and geotechnical design of D-runway construction in Tokyo Haneda Airport [J]. Soils and Foundations, 2011, 51(6): 1003-1018.
[11] 胡一峰,李怒放.高速铁路无砟轨道路基设计原理[M].中国铁道出版社,2010.
[12] Jaup A. Anwendung von 1g Modellversuchen auf das Setzungsverhalten im Hinterfüllungsbereich von Brückenwiderlagern[M]. Fachgebiet u. Versuchsanst. Geotechnik, Univ. Gh Kassel, 1999.
[13] 刘晓红, 杨果林, 王亮亮. 高铁无碴轨道红黏土路堑基床动响应测试与分析[J]. 工程勘察, 2011, 39(8): 12–18.
LIU Xiao-hong, YANG Guo-lin, WANG Liang-liang. Dynamic response testing and analysis on red-clay cutting bed under ballastless track of high-speed railway [J]. Geotechnical Investigation and Surveying, 2011, 39(8): 12–18.
[14] 徐翔. 高速铁路路基动力响应的现场测试及物理模型试验研究[D]. 浙江大学, 2014.
XU Xiang. Study on field measurement and full-scale model test on dynamic response of high-speed railway subgrade[D]. Zhejiang University, 2014.
[15] 董 亮, 赵成刚, 蔡德钩, 等. 高速铁路无砟轨道路基动力特性数值模拟和试验研究[J]. 土木工程学报, 2008, 41(10): 81–86.
DONG Liang, ZHAO Cheng-gang, CAI De-gou, et al. Experimental validation of a numerical model for prediction of the dynamic response of ballastless subgrade of high-speed railways [J]. China Civil Engineering Journal, 2008, 41(10): 81–86.
[16] 苏谦, 白皓, 黄俊杰, 等. 刚性地基低路堤长期动力特性原位试验研究[J]. 土木工程学报, 2011 (S1): 147-151.
SU Qian, BAI Hao, HUANG Junjie, et al. In-situ tests on long-term dynamic characteristics of low embankment on rigid foundation [J]. China Civil Engineering Journal, 2011 (S1): 147-151.
[17] 冷伍明,刘文劼,周文权. 振动荷载作用下重载铁路路基粗颗粒土填料临界动应力试验研究[J]. 振动与冲击, 2015, 34(16): 25-30.
LENG Wuming, LIU Wenjie, ZHOU Wenquan. Testing research on critical cyclical stress of coarse-grained soil filling in heavy haul railway subgrade [J]. Journal of Vibration and Shock, 2015, 34(16):25-30.
[18] 陈爱军,张家生,贺建清,等. 振动压实填石路堤动力响应试验研究[J]. 振动与冲击, 2014, 33(20): 151-156.
CHEN Aijun, ZHANG Jiasheng, HE Janqing, et al. Experimental study on dynamic response of vibratory compaction rockfill embankment [J]. Journal of Vibration and Shock, 2014, 33(20): 151-156.
[19] 马伟斌, 韩自力, 朱忠林. 高速铁路路桥过渡段振动特性试验研究[J]. 岩土工程学报, 2009, 31(1): 124-128.
MA Weibin, HAN Zili, ZHU Zhonglin. Vibration characteristics of high speed railway’s bridge-subgrade transition section [J]. Chinese Journal of Geotechnical Engineering, 2009, 31(1): 124-128.
[20] 焦贵德, 赵淑萍, 马巍, 等. 循环荷载下冻土的滞回圈演化规律[J]. 岩土工程学报, 2013, 35(7): 1343-1349.
JIAO De-gui, ZHAO Shu-ping, MA Wei, et al. Evolution laws of hysteresis loops of frozen soil under cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1343-1349.
[21] 肖军华, 王炳龙, 王长丹, 等. 高速铁路路基不均匀沉降及其控制[M]. 同济大学出版社, 2015.
[22] Kim T H, Kang G C, Park L K. Development and mechanical strength properties of a new lightweight soil [J].Environmental Earth Sciences,2014,72(4): 1109-1116.
[23] 周平,王志杰,张家瑞,等. 高速铁路新型路基材料的动响应减振研究[J]. 振动与冲击, 2017, 36(13): 230-237.
ZHOU Ping, WANG Zhijie, ZHANG Jiarui, et al. Vibration reduction effects of new-type roadbed material of high-speed railway [J]. Journal of Vibration and Shock, 2017, 36(13):230-237.
[24] 曹海莹,朱毅,刘云飞,等. 车辆荷载作用下双层路基层间动应力响应试验研究[J]. 振动与冲击, 2017, 36(05): 30-36+47.
CAO Haiying, ZHU Yi, LIU Yunfei, et al. Tests for interlayer dynamic stress response of a two-layer roadbed under vehicle load [J]. Journal of Vibration and Shock, 2017, 36(05): 30-36+47.
[25] 张石友,孙海建,陈艳国. 高速铁路双线路基动应力的特性研究[J]. 振动与冲击, 2016, 35(17): 165-170.
ZHANG Shiyou, SUN Haijian, CHEN Yanguo. Dynamic stress distribution of high-speed railway double-subgrade [J]. Journal of Vibration and Shock, 2016, 35(17): 165-170.
[26] 冯青松,成功,雷晓燕,等. 有砟与板式无砟轨道结构对高速铁路地基振动的影响分析[J]. 振动与冲击, 2015, 34(24): 153-159.
FENG Qingsong, CHENG Gong, LEI Xiaoyan, et al. Influences of ballasted track and slab ballastless track structures on ground vibration of high speed railway[J]. Journal of Vibration and Shock, 2015, 34(24): 153-159.
[27] 王启云,张家生,孟飞,等. 高速铁路路基模型列车振动荷载模拟[J]. 振动与冲击, 2013, 32(06): 43-46+72.
WANG Qiyun, ZHANG Jiasheng, MENG Fei, et al. Simulation of train vibration load on the subgrade testing model of high-speed railway [J]. Journal of Vibration and Shock, 2013, 32(06): 43-46+72.
[28] 陈雪华,律文田,王永和. 高速铁路路桥过渡段路基动响应特性研究[J]. 振动与冲击, 2006, (03): 95-98+209.
CHEN Xuehua, LV Wentian, WANG Yongtian. Study on the dynamic response of high speed railway bridge-subgrade transition section [J]. Journal of Vibration and Shock, 2006, (03): 95-98+209.
[29] 郭志广, 魏丽敏, 何群, 等. 武广高速铁路无砟轨道路基动力响应试验研究[J]. 振动与冲击, 2013, 32(14): 148-152.
GUO Zhi-guang, WEI Li-min, HE Qun, etc. Tests for dynamic response of ballastless track subgrade of wu-guang high-speed railway[J]. Journal of Vibration and Shock, 2013, 32(14): 148-152.
[30] 王其昌. 高速铁路土木工程[M]. 西南交通大学出版社, 1999.
[31] 聂志红. 高速铁路轨道路基竖向动力响应研究 [D].中南大学, 2005.
NIE Zhihong. Study on vertical dynamical response of the track/subgrade in high-speed railway [D]. Central South University, 2005.
[32] PHAM Duc Phong. 高速铁路无砟轨道基床表层级配碎石翻浆机理与加固效果研究[D].西南交通大学,2015.
|
|
|
|
