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中南大学学报(自然科学版)

Journal of Central South University

第49卷    第3期    总第283期    2018年3月

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文章编号:1672-7207(2018)03-0696-07
基于弹性薄板理论的充填挡墙厚度新模型
张爱卿1,吴爱祥1,韩斌1,王贻明1,常宝孟1,王虎1, 2,武栓军1, 2

(1. 北京科技大学 土木与资源工程学院,北京,100083; 2. 金川集团有限公司,甘肃 金昌,737100)

摘 要: 为了准确计算充填挡墙的厚度,选取一次充填高度和充填挡墙混凝土抗拉强度作为影响因素,基于弹性薄板理论,建立钢混充填挡墙厚度力学模型,推导一次充填高度、混凝土抗拉强度与充填挡墙厚度的关系式。以金川二矿区为工程分析实例,采用控制变量法(CVM)研究一次充填高度和混凝土抗拉强度与充填挡墙厚度的变化规律。研究结果表明:在充填挡墙尺寸和充填料浆物理力学参数一定的前提下,当一次充填高度不变时,充填挡墙的厚度随着混凝土抗拉强度的增大逐渐减小,呈1/2幂次关系;当混凝土抗拉强度不变时,充填挡墙的厚度随着一次充填高度的增加逐渐增大,呈1/2幂次关系。通过与已有充填挡墙厚度理论方法和结果比较,验证了新模型的正确性和合理性。

 

关键词: 充填挡墙;力学模型;弹性薄板理论;变化规律

New model of filling-retaining wall thickness based on theory of elastic plates
ZHANG Aiqing1, WU Aixiang1, HAN Bin1, WANG Yiming1, CHANG Baomeng1, WANG Hu1, 2, WU Shuanjun1, 2

1. School of Civil & Resources Engineering, University of Science & Technology Beijing, Beijing 100083, China; 2. Jinchuan Group Co. Ltd., Jinchang 737100, China

Abstract:In order to calculate the thickness of filling-retaining wall correctly, the height of once-filling and concrete tensile strength were chosen as factors. Based on theory of elastic plates, the mechanical model was built for thickness of filling-retaining wall reinforced, and the relationship between filling height, concrete tensile strength and thickness of retaining wall was deduced. Taking Jinchuan NO.2 mine as the example for engineering analysis, the rule of filling height, concrete tensile strength and thickness of retaining wall was studied by CVM. The result shows that the thickness of filling decreases with the increase of the concrete tensile strength, and shows 1/2 power relations with certain retaining wall size and physical and mechanical parameters of filling slurry. And the thickness of filling increases with the increase of the height of once-filling, and shows 1/2 power relations under constant concrete tensile strength. Comparing the results with the existing theory of filling-retaining wall thickness, the correctness and rationality of the mechanical model are verified.

 

Key words: filling- retaining wall; mechanical model; theory of elastic plates; variation law

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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