面向村镇建筑的废弃橡胶轮胎构造地基研究

Based on current research situation of rural buildings and waste rubber tire application, a new type of artificial ground with waste rubber tires is put forward for rural buildings, which is different from traditional composite foundation. Compaction characteristic, bearing property and failure mode of waste rubber tire filled with different granular material are studied. By means of analysis of the relationship between vertical load and circumferential deformation of waste tire rubber stacking, hoop stress of the waste rubber tire is obtained in view of different diameters, different types and different damage degrees. Bearing capacity and deformation tests of artificial ground with waste rubber tires are carried out to study influences of configuration modes. Calculating methods of bearing capacity and settlement for artificial ground can be derived. Dynamic tests for interaction of artificial ground and typical rural buildings are conducted in order to study anti-vibration performance simple algorithm of artificial ground with waste rubber tires. With optimizing design parameters, the basic system of artificial ground with waste rubber tires can be set up for rural buildings, which has the advantages of bearing reliability, energy absorption and anti-seismic, environmental protection and waste utilization, durability and frost resistance. This project combining rural building ground design with aseismatic ability and disaster reduction, not only contributes to promoting overall seismic resistance of rural buildings in seismic areas, but also increases ground durability under complicated environment. Furthermore, it has important significances in increasing utilization ratio of waste rubber tires and reducing black pollution.

基于村镇建筑及废弃橡胶轮胎应用现状，提出一种面向村镇建筑的区别于传统复合地基的新型废弃橡胶轮胎构造地基。研究不同散体材料在废弃橡胶轮胎环箍下的压实特点、承载性能及破坏形态；分析不同直径、不同类型、不同破损度的废弃橡胶轮胎叠合体的竖向载荷与环向变形规律，建立废弃橡胶轮胎环箍力的计算公式。通过不同构造方式的废弃橡胶轮胎构造地基承载与变形性能试验，提出构造地基承载力和沉降的计算方法。进行废弃橡胶轮胎构造地基与典型村镇建筑共同作用的动力试验，提出废弃橡胶轮胎构造地基隔振性能的简易算法。通过优化设计参数，建立一种适用于村镇建筑的承载可靠、吸能减震、环保利废的新型废弃橡胶轮胎构造地基的基本体系。本项目将村镇建筑地基基础设计与防震减灾有机结合，有助于提升地震区村镇建筑的整体抗震能力，提高复杂环境下村镇建筑地基的耐久性能。同时，对提高废弃橡胶轮胎利用率、减少“黑色污染”具有重要意义。

地基基础问题是影响村镇建筑安全性能的关键因素之一。本项目提出了一种面向村镇建筑的区别于传统复合地基的新型废弃橡胶轮胎构造地基，具有构造简单、承载可靠、施工方便、环保利废、造价低廉等优点。.项目进行了不同填充材料压实试验和叠合体静载试验，分析了废弃橡胶轮胎自身损伤对承载性能的影响。进行了不同填充材料压实试验、叠合体静载试验不同直径、不同类型、不同破损度的橡胶轮胎构造地基载荷试验以及下部土层对承载力以及沉降的影响试验，考虑了废弃橡胶轮胎构造地基轮胎层数及构造方式对承载与变形性能影响试验；进行了废弃橡胶轮胎构造地基与典型村镇建筑的拟动力试验，分析了体系共同作用机理。 .研究成果阐明了废弃橡胶轮胎环箍散体材料的压实原理、废弃橡胶轮胎环箍材料的承载机理，并提出了轮胎对散体的环箍应力及其计算方法。研究了构造地基的抗剪性能、承载性能、变形性能和动力性能，形成了较为系统的废弃橡胶轮胎构造地基基本理论。.废弃轮胎构造地基技术是一种固体废弃物散体的非固化应用技术，可以大量消耗固体废弃物，是一种新型的地基处理方式。固体废弃物-轮胎构造地基合理的利用了整形废弃橡胶轮胎，具有工艺简单，使用量大等优点，对提高废弃轮胎利用率，减少“黑色污染”具有重要意义。废弃橡胶轮胎构造地基具有较好的抗冻胀能力，有效提高了寒冷地区村镇建筑地基耐久性能。同时，固体废弃物-轮胎构造地基依靠环箍效应和变形自修复能力吸收地震能量，减小上部结构在地震中的破坏，实现了工程设计与隔振减震设计的结合，提升了建筑物的整体抗震能力。成果具有典型的环保特征和重要推广价值，经济、社会和环境效益显著。