紫坪铺大坝下游坝坡震后抗震加固措施大型振动台模型试验研究

杨正权; 赵剑明; 刘小生; 周国斌; 刘启旺

doi:10.11779/CJGE201511017

紫坪铺大坝下游坝坡震后抗震加固措施大型振动台模型试验研究 English Version

1. 流域水循环模拟与调控国家重点实验室,北京 100038;
2. 中国水利水电科学研究院,北京 100048;
3. 广东省水利电力勘测设计研究院,广东广州 510635

基金项目: 国家自然科学基金项目（51509272）; 国家重点基础研究发展计划（“973”计划）课题（2013CB036404）; “十二五”国家科技支撑计划课题（2013BAB06B02）; 中国水利水电科学研究院科研专项项目（岩集1467）

详细信息

作者简介:
杨正权(1980- ),男,吉林集安人,博士,高级工程师,主要从事土动力学与土工结构抗震研究。E-mail: yangzhq@iwhr.com。

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出版历程
- 收稿日期: 2014-09-07
- 发布日期: 2015-11-19

Large-scale shaking model tests on anti-seismic and reinforcing measures for slope of Zipingpu earth-rock fill dam after “5.12” Wenchuan Earthquake

1. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China;
2. China Institute of Water Resources and Hydropower Research, Beijing 100048, China;
3. Guangdong Hydropower Planning & Design Institute, Guangzhou 510635, China

摘要

摘要: 紫坪铺水库面板堆石坝坝顶区下游干砌石护坡在汶川地震中遭到了较严重的震损破坏,是大坝震后抗震加固处理的重点环节。综合考虑已有高土石坝坝坡抗震加固措施在大坝震后加固中的适用性,并参考浆砌石护坡在强震中表现出的良好抗震性能,浆砌石护坡成为了紫坪铺大坝下游坝坡震后抗震加固的重要选择。针对紫坪铺大坝坝坡震后抗震加固工程,进行堆石坝坝顶区坝坡抗震加固措施（干砌石护坡和浆砌石护坡）大型振动台模型试验,研究砌石护坡的抗震加固机理并验证其抗震加固效果;同时,结合大坝地震动力反应计算和大坝振动台模型试验的研究成果,确定了大坝坝顶区浆砌石护坡的加固范围。研究表明：浆砌石护坡在强震中具有良好的整体性,干砌石护坡在强震中的局部碎、块石滑移导致护坡整体渐进破坏,浆砌石护坡对堆石坝坡的保护作用明显优于干砌石护坡;紫坪铺大坝下游坝坡震后浆砌石护坡加固范围取为3/4坝高以上坝顶区坝坡较为合理。
- 紫坪铺大坝 /
- 抗震加固措施 /
- 干砌石护坡 /
- 浆砌石护坡 /
- 加固机理 /
- 加固效果
Abstract: The dry masonry facing of the downstream slope of Zipingpu earth-rock fill dam was seriously destroyed during “5.12” Wenchuan Earthquake. Accordingly, the anti-seismic reinforcement for the damaged dam slope is an important task after the earthquake. The mortar masonry facing is regarded as the best choices comprehensively considering the applicability of anti-seismic and reinforcing measures for slopes of high earth-rock fill dams after earthquake proposed by worldwide engineers and its excellent anti-seismic performance in real strong earthquakes. Large-scale shaking table model tests on anti-seismic and reinforcing measures for earth-rock fill dam slope (dry masonry and mortar masonry facings) of Zipingpu earth-rock fill dam after “5.12” Wenchuan Earthquake are performed. The anti-seismic and reinforcing effect of the masonry facings is verified by the shaking model tests, and their anti-seismic and reinforcing mechanism is analyzed. Furthermore, the reinforcement area of the dam slope using the mortar masonry facing is determined based on the test results combining with the calculated results of the dam's earthquake response. The results show that the mortar masonry facing can keep its integrity wonderfully in strong earthquake, but the dry masonry facing may fail gradually because of the loosening and sliding of local stones in strong earthquakes. The protective effects of the mortar masonry facing on the dynamic stability of rock-fill dam slope in earthquake is better than the dry masonry facing obviously. The reinforcement area of the downstream slope of Zipingpu earth-rock fill dam using the mortar masonry facing after “5.12” Wenchuan Earthquake is determined to be in the dam slope area above 3/4 dam height.
- Zipingpu earth-rock fill dam /
- anti-seismic and reinforcing measure /
- dry masonry facing /
- mortar masonry facing /
- reinforcement mechanism /
- reinforcement effect

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参考文献(12)

[1]	刘小生, 王钟宁, 汪小刚, 等. 面板坝大型振动台模型试验与动力分析[M]. 北京: 中国水利水电出版社, 2005. (LIU Xiao-sheng, WANG Zhong-ning, WANG Xiao-gang, et al. Large-scale shaking model tests and dynamic analysis of concrete face rock-fill dam[M]. Beijing: China Water Power Press, 2005. (in Chinese))
[2]	陈厚群, 徐泽平, 李敏. 汶川大地震和大坝抗震安全[J]. 水利学报, 2008, 39(10): 1158-1167. (CHEN Hou-qun, XU Ze-ping, LI Min. Wenchuan Earthquake and dan seismic safty[J]. Journal of Hydraulic Engineering, 2008, 39(10): 1158-1167. (in Chinese))
[3]	GUAN Zhi-cheng. Investigation of the 5.12 Wenchuan Earthquake damages to the Zipingpu Water Control Project and an assessment of it’s safety state[J]. Science in China Series E: Technological Sciences, 2009, 52(4): 820-834.
[4]	陈厚群. 水工建筑物抗震设计规范修编的若干问题研究[J]. 水力发电学报, 2011, 30(6): 4-10. (CHEN Hou-qun. Study on some revision issues of Anti-seismic Design Codes of Hydraulic Structures in China[J]. Journal of Hydroelectric Engineering, 2011, 30(6): 4-10. (in Chinese))
[5]	陈生水, 霍家平, 章为民. “5.12”汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J]. 岩土工程学报, 2008, 30(6): 795-801. (CHEN Sheng-shui, HUO Jia-ping, ZHANG Wei-min. Analysis of effects of “5.12” Wenchuan Earthquake on Zipingpu Concrete Face Rock-fill Dam[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(6): 795-801. (in Chinese))
[6]	赵剑明, 刘小生, 温彦锋, 等. 紫坪铺大坝汶川地震震害分析及高土石坝抗震减灾研究设想[J]. 水力发电, 2009, 35(5): 11-14. (ZHAO Jian-ming, LIU Xiao-sheng, WEN Yan-feng, et al. Analysis of earthquake damage of the Zipingpu Dam in Wenchuan Earthquake and the study proposal on the anti-earthquake and disaster reduction of high earth-rock dam[J]. Water Power, 2009, 35(5): 11-14. (in Chinese))
[7]	孔宪京, 邹德高, 邓学晶, 等. 高土石坝综合抗震措施及其效果的验算[J]. 水利学报, 2006, 37(12): 1489-1495. (KONG Xian-jing, ZOU De-gao, DENG Xue-jing, et al. Comprehensive earthquake resistant measure of high earth-rock fill dams and effectiveness verification[J]. Journal of Hydraulic Engineering, 2006, 37(12): 1489-1495. (in Chinese))
[8]	杨正权. 加筋土挡墙稳定性分析研究[D]. 大连: 大连理工大学, 2006. (YANG Zheng-quan. Study on stability analysis of reinforced soil retaining walls[D]. Dalian: Dalian University of Technology, 2006. (in Chinese))
[9]	杨正权, 刘小生, 刘启旺, 等. 猴子岩高面板堆石坝地震模拟振动台模型试验研究[J]. 地震工程与工程振动, 2010, 30(5): 113-119. (YANG Zheng-quan, LIU Xiao-sheng, LIU Qi-wang, et al. Study on shaking table model tests for Houziyan high concrete faced rock-fill dam[J]. Earthquake Engineering and Engineering Vibration, 2010, 30(5): 113-119. (in Chinese))
[10]	杨正权. 土石坝动力分析方法振动台模型试验验证及地震动输入研究[D]. 北京: 中国水利水电科学研究院, 2011. (YANG Zheng-quan. Study on dynamic analysis methods verification using shaking table model test and seismic motion input of earth-rock fill dam[D]. Beijing: China Institute of Water Resources and Hydropower Research, 2011. (in Chinese))
[11]	杨正权, 刘小生, 汪小刚, 等. 高土石坝地震动力反应特性大型振动台模型试验研究[J]. 水利学报, 2014, 45(11): 1361-1372. (YANG Zheng-quan, LIU Xiao-sheng, WANG Xiao-gang, et al. Study on dynamic response characteristics of high rock-fill dam in earthquake by large-scale shaking table model tests[J]. Journal of Hydraulic Engineering, 2014, 45(11): 11361-1372. (in Chinese))
[12]	中国水利水电科学研究院岩土工程研究所. 紫坪铺水库面板堆石坝振动台模型试验研究报告[R]. 北京: 中国水利水电科学研究院, 2012. (Geotechnical Department of IWHR. Research report of shaking table model test for Zipingpu concrete face rock-fill dam[R]. Beijing: China Institute of Water Resources and Hydropower Research, 2012. (in Chinese))