内置H型钢泥石流拦挡坝抗块石冲击性能研究

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (5): 114-119.

内置H型钢泥石流拦挡坝抗块石冲击性能研究

王秀丽^*1,2, 程荣荣¹, 朱中城¹, 梁海³

1.兰州理工大学土木工程学院, 甘肃兰州 730050;
2.兰州理工大学西部土木工程防灾减灾教育部工程研究中心, 甘肃兰州 730050;
3.中国电建集团西北勘测设计研究院有限公司, 陕西西安 710000

收稿日期:2020-05-18 出版日期:2022-10-28 发布日期:2022-11-21
通讯作者: 王秀丽(1963-),女,辽宁沈阳人,博士,教授,博导. Email:214663592@qq.com
基金资助:
国家自然科学基金(51778273)

Study on the impact resistance block stone of built-in H-shaped steel debris flow retaining dam

WANG Xiu-li^1,2, CHENG Rong-rong¹, ZHU Zhong-cheng¹, LIANG Hai³

1. School of Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. Western Center of Disaster Mitigation in Civil Engineering, Ministry of Education, Lanzhou Univ. of Tech., Lanzhou 730050, China;
3. Power China Construction Group, Northwest Survey Design and Research Institute Co. Ltd., Xi'an 710000

Received:2020-05-18 Online:2022-10-28 Published:2022-11-21

摘要/Abstract

摘要： 为了解决普通重力式泥石流拦挡坝在泥石流灾害中容易被大块石损毁的问题,充分利用H型钢塑性韧性好、抗冲击性能好的优点,提出了一种内置H型钢的新型泥石流拦挡坝(简称内置H型钢新型坝).运用有限元ABAQUS软件对其进行块石冲击作用下的数值模拟,从坝体的坝底支反力、顶部位移、加速度、能量吸收等方面与普通重力式泥石流拦挡坝进行动力响应的对比分析,结果表明:内置H型钢新型坝的支反力比普通坝可减小约1/2,新型坝的顶部位移是普通坝的9/13.混凝土与H型钢形成双重拦挡的效应,在混凝土崩裂后,H型钢仍具有较好的承载能力与变形能力.加入H型钢的新型坝改善了普通重力式泥石流拦挡坝的抗冲击性能,可有效减弱泥石流块石冲击的灾害.

关键词: 内置H型钢新型泥石流拦挡坝, 块石冲击作用, 动力响应, 抗冲击性能

Abstract: In order to solve the problem that ordinary gravity debris flow retaining dam is easy to be damaged by large rocks in debris flow disaster, and to make full use of the advantages of good plasticity and impact resistance of H-shaped steel, a new type of debris flow retaining dam with built-in H-shaped steel is proposed. The finite element ABAQUS software is used to carry out the numerical simulation under the impact of the block stone. The dynamic response of the dam is compared with that of the ordinary gravity debris flow retaining dam in terms of the dam bottom reaction force, top displacement, acceleration, energy absorption, etc. The results show that the reaction force of the new type of dam with built-in H-shaped steel is about 1/2 less than that of the ordinary dam, and the top displacement of the new type of dam is 9/13 of that of the ordinary dam. Concrete and H-steel form double retaining effect. After concrete crack, H-steel still has better bearing capacity and deformation capacity. The new type of dam with H-shaped steel improves the anti impact performance of the ordinary gravity debris flow retaining dam and weakens the disaster of debris flow block rock impact.

Key words: built-in H-shaped steel debris flow retaining Dam, the Impact of block stone, dynamic response, impact resistance

中图分类号:

P642.23
X43

王秀丽, 程荣荣, 朱中城, 梁海. 内置H型钢泥石流拦挡坝抗块石冲击性能研究[J]. 兰州理工大学学报, 2022, 48(5): 114-119.

WANG Xiu-li, CHENG Rong-rong, ZHU Zhong-cheng, LIANG Hai. Study on the impact resistance block stone of built-in H-shaped steel debris flow retaining dam[J]. Journal of Lanzhou University of Technology, 2022, 48(5): 114-119.

参考文献

[1] 康志成,李焯芬,马蔼乃,等.中国泥石流 [M].北京:科学出版社,2004.
[2] 王秀丽,张智江,冉永红.泥石流格宾拦挡坝在冲击荷载下的动力响应分析 [J].中国地质灾害与防治学报,2016,27(2):66-71.
[3] DOWLING C A,SANTY P M.Debris flows and their toll on human life:a global analysis of debris-flow fatalities from 1950 to 2011 [J].Nature Hazards,2014(71):203-227.
[4] TAKAHASHI T.Debris flow:mechanics,prediction and countermeasures [M].2nd Edition.London:CRC Press,2014.
[5] SHIMA J,MORIYAMA H,KOHKUYO H,et al.Prevention and mitigation of debris flow hazards by using steel open-type sabo dams [J].International Journal of Erosion Control Engineering,2016,9(3):135-144.
[6] HIURA M,NAKATANI K,HASEGAWA Y,et al.Sediment trap function of open-type steel sabo dam with respect to shape and installation slope [J].International Journal of Erosion Control Engineering,2017,10(3):100-107.
[7] 周文兵,柳金峰,袁东.白龙江中游泥石流拦砂坝防治效果分析研究 [J].长江科学院院报,2019,36(9)64-70.
[8] 罗祥,石少卿,严庆平.一种提高泥石流防撞墩抗冲击性能的方法 [J].地质灾害与环境保护,2011,22(3):89-93.
[9] 郑国足,王秀丽,张守丽.带弹簧支撑的新型泥石流拦挡坝抗冲击性能研究 [J].防灾减灾工程学报,2014,34(5):551-558.
[10] 王秀丽,高芳芳,张嘉懿,等.具有自复位功能的泥石流拦挡坝抗冲击性能 [J].建筑科学与工程学报,2016,33(3):50-57.
[11] 柳春,余志祥,骆丽茹,等.含大块石泥石流冲击作用下混凝土拦挡坝的动力学行为研究 [J].振动与冲击,2019,38(14):161-168+238.
[12] 路国运,陈鹏程.薄柔H型钢柱抗侧向冲击性能研究 [J].太原理工大学学报,2019,50(6):736-742.
[13] 孟刚,贾金青,朱伟庆.预应力型钢超高强混凝土梁抗弯性能试验研究 [J].工程力学,2014,31(5):203-210+217.
[14] 朱翔,曹瑞东,康婷婷.侧向冲击荷载作用下钢骨混凝土柱抗冲击性能研究 [J].防灾减灾工程学报,2017(4):161-170.
[15] 王钧,邬丹,郑文忠.预应力H型钢混凝土简支梁正截面受力性能试验 [J].哈尔滨工业大学学报,2009,41(6):22-27.
[16] 李俊杰,王秀丽,朱彦鹏,等.冲击荷载下带支撑泥石流拦挡坝动力响应试验研究 [J].振动与冲击,2015,34(18):79-86+105.