Analysis of Stress Performance and Economy of Prefabricated Plate-spiral Anchor Foundation
安忠海① AN Zhong-hai；丛欣福① CONG Xin-fu；郑传杰① ZHENG Chuan-jie；
马会超② MA Hui-chao；张士波② ZHANG Shi-bo；王文明②③ WANG Wen-ming
（① 山东电力工程咨询院有限公司，济南 250013；② 山东建筑大学土木工程学院，济南 250101；③ 建筑结构加固改造与地下空间工程教育部重点实验室，济南 250101）
（① Shandong Electric Power Engineering Consulting Institute Co.，Ltd.，Ji'nan 250013，China；② School of Civil Engineering，Shandong Jianzhu University，Ji'nan 250101，China；③ Key Laboratory of Building Structure Reinforcement and Retrofitting and Underground Space Engineering，
Ministry of Education，Ji'nan 250101，China）
摘要：随着国家对节能减排、环境保护要求的日益提高，装配式基础领域取得了突飞猛进的发展，有必要对装配式基础的受力性能及经济性进行分析。本文以柱下独立基础为研究对象，提出一种装配式板式-螺旋锚复合基础方案，旨在分析其受力性能及经济性。通过建立基于 ABAQUS 有限元软件的精细化模型，对比了传统基础与新型基础在相同荷载下的响应情况。发现板式-螺旋锚复合基础优于板式基础。在相同荷载作用下，板式-螺旋锚复合基础表现出更优异的受力性能，能够更有效地分散和承担荷载，提高了基础的稳定性和安全性。对比板式基础和板式-螺旋锚复合基础的材料量，发现采用板式-螺旋锚复合基础后，混凝土减少 7.4%，钢材量基本不变，土方量减少 42.8%，工期可减少 50%以上。
Abstract: In recent years, with the escalating demands for energy conservation, emission reduction, and environmental preservation,the field of prefabricated foundations has undergone remarkable advancements. Analyzing the structural performance and economic feasibility of prefabricated foundations has become imperative. This study targets column-supported independent foundations and proposes a prefabricated composite foundation scheme amalgamating plate elements and spiral anchors, aiming to assess its structural performance and economic viability. Utilizing refined models established with ABAQUS finite element software, a comparison is drawn between the responses of traditional foundations and the proposed composite foundation under identical loads. The findings underscore the superiority of the composite foundation over traditional plate foundations. When subjected to identical loads, the composite foundation exhibits superior structural performance, effectively distributing and bearing loads, thereby bolstering stability and safety. Furthermore, compared to traditional plate foundations, the composite foundation reduces concrete usage by 7.4%,maintains similar steel quantities, reduces earthwork by 42.8%, and can shorten the construction period by over 50%.
关键词：装配式；螺旋锚；受力性能；数值模拟
Key words: assembly；spiral anchor；force performance；numerical simulation
中图分类号：F426 文献标识码：A 文章编号：1006-4311（2024）29-017-04 doi:10.3969/j.issn.1006-4311.2024.29.006
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