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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

40卷

期数:

2023年03期

页码:

83-91

栏目:

建筑结构

出版日期:

2023-05-20

文章信息/Info

Title:

Design and stability study of UHPC-CA fabricated dry masonry retaining wall

文章编号:

1673-2049(2023)03-0083-09

作者:

王 青^1,2,任潇斌^1,2,王华锋^1,2,周万清^1,2

(1. 三峡大学 湖北省防灾减灾重点实验室,湖北 宜昌 443002; 2. 三峡大学 土木与建筑学院,湖北 宜昌 443002)

Author(s):

WANG Qing^1,2, REN Xiaobin^1,2, WANG Huafeng^1,2, ZHOU Wanqing^1,2

(1. Hubei Key Laboratory of Disaster Prevention and Mitigation, China Three Gorges University, Yichang 443002, Hubei, China; 2. College of Civil Engineering & Architecture, China Three Gorges University, Yichang 443002, Hubei, China)

关键词:

干砌挡土墙;  生态挡块;  模型试验;  稳定性;  有限元仿真;  UHPC-CA

Keywords:

dry masonry retaining wall;  ecological block;  model test;  stability;  finite element simulation;  UHPC-CA

分类号:

TU375.6

DOI:

10.19815/j.jace.2021.11015

文献标志码:

A

摘要:

设计出一种新型装配式空心挡块,挡块由掺粗骨料超高性能混凝土(UHPC-CA)浇筑而成,其干砌式墙体强度及耐久性较传统现浇挡土墙均得到提升,挡块间采用梯形榫槽进行连接,榫槽尺寸及角度基于摩擦自锁原理确定; 利用模型试验、有限元仿真和理论分析等手段对新型挡块干砌式挡土墙的稳定性进行研究。结果表明:所设计的挡块榫槽间连接可靠,未发生榫槽间脱落导致的局部破坏,干砌式挡土墙整体性良好,且抗倾覆安全稳定性可达到等同现浇的效果; 新型挡土墙多种方式堆砌可适用于各级标准载重汽车行驶道路的路堤以及路肩等防护工程,双排堆砌即可保证梯形榫不发生剪切破坏; 挡块填土孔内可填充种植土和种植绿植,具有良好的生态效益。

Abstract:

A new type of fabricated hollow block was designed, and the block was made of ultra-high performance concrete mixed with coarse aggregate(UHPC-CA). The strength and durability of the dry masonry wall were improved compared with the traditional cast-in-situ retaining wall. The blocks were connected by trapezoidal tenon and groove, and the size and angle of tenon and groove were determined based on the friction self-locking principle. The stability of the new block dry masonry retaining wall was studied by means of model test, finite element simulation and theoretical analysis. The results show that the tenon and groove of the designed block are connected reliably, and no local damage caused by falling off between tenon and groove occurs. The integrity of retaining wall is good, and the anti overturning safety and stability of the new block dry masonry retaining wall can reach the same effect as the integral cast-in-situ retaining wall. The new retaining wall can be stacked in many ways, which is suitable for embankment, shoulder and other protection works of standard truck driving roads at all levels. The double row retaining wall can ensure that the trapezoidal tenon will not be damaged by shear. In addition, green plants can be planted in the filling hole of the block, which has great ecological benefits.

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相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2021-11-05
基金项目:高等学校学科创新引智计划项目(D20015); 湖北省自然科学基金项目(2018CFB664)
作者简介:王 青(1976-),女,工学博士,教授,硕士生导师,E-mail:postwq@163.com。

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更新日期/Last Update: 2023-05-20