高拱坝坝肩接触爆炸毁伤安全评价方法

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (11) : 265-272.

论文

高拱坝坝肩接触爆炸毁伤安全评价方法

赵小华1，2，王高辉2，卢文波2，周创兵2

作者信息 +

Safety evaluation method of a high arch dam with abutment suffered contact explosion

ZHAO Xiaohua1,2， WANG Gaohui2， LU Wenbo2， ZHOU Chuangbing2

Author information +

文章历史 +

摘要

坝肩稳定是高拱坝结构整体安全运行的基础，尽管高拱坝由于拱形受力特性具有较高的承载能力，但坝肩在遭受爆炸荷载作用后极易发生局部毁伤破坏，从而影响高拱坝结构的整体稳定性。本文着重对高拱坝遭遇水下接触爆炸毁伤后整体的安全稳定评价方法开展了研究，以刚体极限平衡法为基础，针对坝肩的毁伤破坏特征及毁伤面积，提出了拱圈沿右拱端面抗滑安全系数的评价准则，探讨了拱端面的损伤破坏对高拱坝沿拱端面抗滑稳定的影响。结果表明：坝肩接触爆炸主要引起接触部位坝体的压缩破坏和邻近拱端面的剪切损伤，而拱端面的毁伤将直接降低拱圈沿拱端面的抗滑稳定性，并最终导致高拱坝整体沿拱端面滑动失稳。

Abstract

Abutment stability of high arch dams is a fatal factor to the global safe operation of the dam. Although high arch dams have high bearing capacity due to the characteristic of the arch structure, abutment tends to suffer local damage and failure subjected to blast loading which will affect the global stability of the dam. This paper focuses on the overall safety and stability evaluation method of the high arch dam suffers underwater contact explosion damage. Based on the rigid body limit equilibrium method, according to the characteristics and area of the abutment damage, the evaluation criteria of the anti-sliding safety factor are discussed. The influence of the damage of the arch end face on the anti-sliding stability of the high arch dam along the base surface is discussed. The results indicate that the high arch abutment mainly suffers the compression failure around the initiation point and the cracking damage of the adjacent base surface subjected to underwater contact explosion. Moreover, the crack damage of the base surface will directly reduce the anti-sliding stability of the overall high arch along the base surface and finally causes the whole high arch dam slides along the base surface.

导出引用

赵小华1，2，王高辉2，卢文波2，周创兵2. 高拱坝坝肩接触爆炸毁伤安全评价方法[J]. 振动与冲击, 2020, 39(11): 265-272

ZHAO Xiaohua1,2， WANG Gaohui2， LU Wenbo2， ZHOU Chuangbing2. Safety evaluation method of a high arch dam with abutment suffered contact explosion[J]. Journal of Vibration and Shock, 2020, 39(11): 265-272

参考文献

[1] 张启灵，李波. 高水位运行下近水面水下爆炸对拱坝结构的影响[J]. 应用力学学报，2013，30(2)：153-159.
ZHANG Qiling，LI Bo. Impact on arch dam with a high reservoir level experiencing a near-surface underwater explosion shock loading[J]. Chinese Journal of Applied Mechanics，2013，30(2)：153-159.
[2] ZHANG Qiling，LI Duanyou，WANG Fan，et al. Numerical simulation of nonlinear structural responses of an arch dam to an underwater explosion[J]. Engineering Failure Analysis，2018，91：72-91.
[3] 张社荣，王高辉. 浅水爆炸冲击荷载下高拱坝抗爆性能分析[J]. 天津大学学报(自然科学与工程技术版)，2013，46(4)：315-321.
ZHANG Sherong，WANG Gaohui. Antiknock performance of high arch dam subjected to shallow water explosion[J]. Journal of Tianjin University (Science and Technology)，2013，46(4)：315-321.
[4] 薛新华，李鹏. 爆炸荷载作用下拱坝动力响应分析[J]. 水利学报，2015，46(增刊1)：107-110.
XUE Xinhua，LI Peng. Dynamic response analysis of arch dam under blast load[J]. Journal of Hydraulic Engineering，2015，46(Suppl)：107-110.
[5] MORADI M，AGHAJANZADEH S M，MIRZABOZORG H，et al. Underwater explosion and its effects on nonlinear behavior of an arch dam[J]. Coupled Systems Mechanics，2018，7(3)：333-51.
[6] ZHU F，ZHU W，FEI D，et al. Modelling and analysis of arch dam withstand underwater explosion[J]. International Journal of Computer Applications in Technology，2013，48(3)：272-280.
[7] 任青文，钱向东，赵引，等. 高拱坝沿建基面抗滑稳定性的分析方法研究[J]. 水利学报，2002，33(2)：1-7.
REN Qingwen，QIAN Xiangdong，ZHAO Yin，et al. Methods for analyzing sliding resistance stability along the base surface of high arch dam[J]. Journal of Hydraulic Engineering，2002，33(2)：1-7.
[8] 徐福卫，陈海玉. 高拱坝沿建基面的上滑稳定性分析[J]. 水力发电，2008，34(3)：44-46.
XU Fuwei，CHEN Haiyu. Study of stability against sliding along contact face between foundation and arch dam[J]. Water Power，2008，34(3)：44-46.
[9] 陈正作. 对拱坝沿基面滑动机制研究工作结论（初稿）的探讨[J]. 水利技术监督，2001，9(5)：34-37.
CHEN Zhengzuo. Discussion research conclusion of the sliding mechanism of arch dam along contact face between foundation and arch dam (preliminary draft)[J]. Technical Supervision in Water Resources，2001，9(5)：34-37.
[10] 汝乃华. 拱坝的上滑失稳和安全准则[J]. 水利学报，1988，(2)：40-48.
RU Naihua. Study of the safety criteria and up-glide stability of arch dams[J]. Journal of Hydraulic Engineering，1988，(2)：40-48.
[11] 王光纶，郭志松，张楚汉. 高拱坝沿建基面抗滑稳定分析的研究[J]. 水利水电技术，1998，29(8)：5-11.
WANG Guanglun，GUO Zhisong，ZHANG Chuhan. Study of stability against sliding along contact face between foundation and high arch dam[J]. Water Resources and Hydropower Engineering，1998，29(8)：5-11.
[12] RIEDEL W, THOMA K, HIERMAIER S, et al. Penetration of reinforced concrete by BETA2B2500 numerical analysis using a new macroscopic concrete model for hyd-rocodes[C]//9th International Symposium, Interaction of the Effects of Munitions with Structures. Berlin-Strausberg: IBMAC, 1999: 315-322.
[13] TU Z，Yong Lu. Evaluation of typical concrete material models used in hydrocodes for high dynamic response simulations[J]. International Journal of Impact Engineering，2009，36(1)：132-146.
[14] 赵小华，王高辉，卢文波，等. 混凝土重力坝含孔口坝段在水下爆炸荷载作用下的毁伤特性[J]. 振动与冲击，2016，35(22)：101-107.
ZHAO Xiaohua，WANG Gaohui，LU Wenbo，et al. Damage characteristics of concrete gravity dams with orifices subjected to underwater explosion[J]. Journal of Vibration and Shock，2016，35(22)：101-107.
[15] 张社荣，孔源，王高辉. 水下和空中爆炸时混凝土重力坝动态响应对比分析[J]. 振动与冲击，2014，33(17)：47-54.
ZHANG Sherong，KONG Yuan，WANG Gaohui. Dynamic response of a concrete gravity dam subjected to underwater and air explosions[J]. Journal of Vibration and Shock，2014，33(17)：47-54.
[16] LI Qi，WANG Gaohui，LU Wenbo，et al. Failure modes and effect analysis of concrete gravity dams subjected to underwater contact explosion considering the hydrostatic pressure[J]. Engineering Failure Analysis，2018，85：62-76.
[17] 张社荣，李宏璧，王高辉，等. 水下爆炸冲击波数值模拟的网格尺寸确定方法[J]. 振动与冲击，2015(8)：93-100.
ZHANG Sherong，LI Hongbi，WANG Gaohui，et al. Comparative analysis of mesh size effects on numerical simulation of shock wave in air blast and underwater explosion[J]. Journal of Vibration and Shock，2015(8)：93-100.
[18] ZHAO X，WANG G，LU W，et al. Damage features of RC slabs subjected to air and underwater contact explosions[J]. Ocean Engineering，2018，147：531-545.
[19] DL/T5346-2006. 混凝土拱坝设计规范[S]. 北京: 中国电力出版社, 2007.
DL/T5346-2006. Design specification for concrete arch dams[S]. Beijing: China Electric Power Press, 2007.
[20] 余天堂，任青文. 锦屏高拱坝整体安全度评估[J]. 岩石力学与工程学报，2007，26(4)：787-794.
YU Tiantang，REN Qingwen. Evaluation of global safety degree of Jinping high arch dam[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(4)：787-794.