建筑垃圾在软基处理中的应用

Application of Construction Waste in Soft Foundation Treatment

文中简述了我国建筑垃圾的现状和软土地基的基本特征,阐述了软基处理的常用方法,并就其中的换填垫层法进行对比分析,最后重点介绍了针对不同软土地基利用建筑垃圾代替现有建筑材料进行处理的施工方法。通过几个工程实例分析了采用建筑垃圾处理软土地基的实际效果,得出了利用建筑垃圾进行软土地基处理,不但达到提高地基承载力的目的,满足了设计及规范的要求,还处置了建筑垃圾,减少了弃土场地占用,同时降低了工程造价,节省了国家建设资金的可行性结论。最后对该课题的实际应用进行了展望,呼吁对建筑垃圾也进行分类,可利用的包括塑料、金属、砖渣、砼渣、矿渣以及路面破除的弃渣等等,不可利用的包括有机质、木头、生活垃圾、淤泥等作为渣土弃掉,再根据不同等级的道路及承载力要求,结合现场实际情况及建筑垃圾的来源,就近利用建筑垃圾,最终希望经过足够多的科研及实践经验后,能够出台一项国家标准。不但能够把建筑垃圾变废为宝,还能解决我国资源短缺及污染环境的问题。

This paper briefly describes the current situation of construction waste in China and the basic characteristics of soft soil foundation,expounds the common methods of soft foundation treatment,compares and analyzes the replacement cushion method,and finally focuses on the construction methods of using construction waste to replace existing building materials for different soft soil foundations.Through several engineering examples,this paper analyzes the actual effect of using construction waste to treat soft soil foundation,and draws the conclusion that using construction waste to treat soft soil foundation can not only improve the bearing capacity of foundation,meet the requirements of design and specifications,but also dispose construction waste,reduce the occupation of spoil ground,reduce the project cost,and save the feasibility of national construction funds.Finally,the practical application of the subject is prospected,calling for the classification of construction waste,including plastic,metal,brick slag,concrete slag,slag and waste slag from road surface breaking,etc.,while the unusable ones include organic matter,wood,domestic waste,sludge,etc.,which are discarded as waste soil.Then,according to the requirements of different grades of roads and bearing capacity,combined with the actual situation of the site and the source of construction waste,use construction waste nearby.Ultimately,it is hoped that after sufficient research and practical experience,a national standard can be introduced,which can not only turn construction waste into treasure,but also solve the problems of resource shortage and environmental pollution in China.