基于高空隙率的嵌卡力对块石护面结构稳定性的影响  

Influence of Clamping Force on Stability of Rubble Protective Structure Based on High Void Ratio

作　　者：臧振涛 陈振华 吴晓翔 ZANG Zhen-tao;CHEN Zhen-hua;WU Xiao-xiang(School of Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Zhejiang Branch,Jiangsu Yuheng Engineering Quality Inspection Co.,LTD.,Jiaxing 314300,China;Reconnaissance and Design Institute,Qiantang River Administration of Zhejiang Province,Hangzhou 310020,China;Zhejiang Quality and Safety Administration of Water Resources and Electric Power,Hangzhou 310012,China)

机构地区：[1]华北水利水电大学水利学院,河南郑州450046 [2]江苏禹衡工程质量检测有限公司浙江分公司,浙江嘉兴314300 [3]浙江省钱塘江管理局勘测设计院,浙江杭州310020 [4]浙江省水利水电工程质量与安全管理中心,浙江杭州310012

出　　处：《水电能源科学》2024年第10期186-189,200,共5页Water Resources and Power

基　　金：浙江省水利厅科技计划项目(RB2118)。

摘　　要：为研究块石护面结构的抗风浪能力,引入块石间嵌卡力及空隙率因子,构建了块石护面临界稳定力学平衡方程,开展了块石护面现场抗脱稳定试验。结果表明,在工程应用中,块石护面结构的抗风浪能力与护面厚度、块石间的嵌卡力成正比,与块石下表面面积、空隙率成反比;采用C40混凝土“嵌缝”优化后,单位面积嵌卡力平均值为68.53kPa;空隙率为45%、40%的混凝土生态嵌缝块石失稳时,其抗脱临界值分别为抛理块石的8.87、12.86倍,其失稳时所受的嵌卡力约为重力与摩擦力之和的2.76、7.78倍;块石护面结构现场抗跳脱稳定试验与理论计算结果及变化规律一致;在保证护面结构空隙率大于40%的前提下,采用侧砌或竖砌的抛理工艺、“对角式”或“三角式”嵌缝工艺,可有效提高块石护面结构的抗风浪能力。研究结果为块石护面结构设计及加固提供理论参考。Aiming at the problem that the clamping force on stability of rubble protective structure,the clamping force and void ratio of rubble were introduced.The equilibrium equation of rubble protective structure critical stable mechanics was constructed.The test of rubble protective structure anti-tripping stability was conducted.The results show that in engineering application,the wave and wind resistance of rubble protective structure was directly proportional to rubble thickness and clamping force,and was inversely proportional to the lower surface area and void ratio of the block stone.After using C40 concrete,the clamping force per unit area was 68.53 kPa.When the concrete clamping rubble of 45%,40%void ratio was unstability,the anti-tripping critical values of the concrete clamping rubble were 8.87 and 12.86 times of toss blocks of stone.The clamping force of the concrete clamping rubble were 2.76 and 7.78 times of sum of gravity and friction.The results and changes of anti-tripping stability test of rubble protective structure and theory are same.With the void ratio of rubble protective structure not less than 40%,the craft of lateral or vertical masonry and the craft of diagonal or trigonal caulking can significantly improve the wave and wind resistance of the rubble protective structure.The research results can provide theoretical reference for the design and reinforcement of rubble protective structure.

关 键 词：嵌卡力 空隙率 块石护面 抗风浪能力 抗脱稳定试验 

分 类 号：TV871[水利工程—水利水电工程] U656.3[交通运输工程—港口、海岸及近海工程]