高压旋喷微型钢管素砼桩在深厚软土填石地基加固中的应用研究
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摘要
珠海某化工厂区由于深厚淤泥质软土填石地基承载能力弱、填石层压实度不足、海洋的潮汐作用以及上部各类建构筑物的荷载分布不均,造成厂区建构筑物倾斜、开裂、损坏、脱空等病害现象。在充分考虑既有建筑特点,不影响正常生产安全的条件下,提出高压旋喷微型钢管素混凝土桩基础加固方法,实际工程应用效果较好,可用于类似工程的加固处理。
Due to the weak bearing capacity of the deep silty soft soil rockfill foundation, the insufficient compact-ness of the rockfill layer, the tidal effects of the ocean and the uneven load distribution of buildings, the cracking,damage, emptying and other disease phenomena of the plant building present in a certain chemical plant area in Zhuhai. Based on the full consideration of the characteristics of existing buildings and without affecting the normal production safety, a reinforcing method corresponding to the rotary-spray micro steel pipe concrete pile foundation is proposed. The practical application of the concrete pile does well and can be used for reinforcement treatment of similar projects.
Due to the weak bearing capacity of the deep silty soft soil rockfill foundation, the insufficient compact-ness of the rockfill layer, the tidal effects of the ocean and the uneven load distribution of buildings, the cracking,damage, emptying and other disease phenomena of the plant building present in a certain chemical plant area in Zhuhai. Based on the full consideration of the characteristics of existing buildings and without affecting the normal production safety, a reinforcing method corresponding to the rotary-spray micro steel pipe concrete pile foundation is proposed. The practical application of the concrete pile does well and can be used for reinforcement treatment of similar projects.
引文
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[2]郑刚,龚晓南,谢永利,等.地基处理技术发展综述[J].土木工程学报,2012,45(2):127-146.
[3]刘汉龙,赵明华.地基处理研究进展[J].土木工程学报,2016,49(1):96-115.
[4]席宁中,于海成,席锋仪.围海造地软弱地基综合处理技术[J].建筑科学,2016,32(1):121-128.
[5]李彰明.软土地基加固的理论、设计与施工[M].北京:中国电力出版社,2006.
[6]王红.既有地基基础加固技术及其工程实现的研究[D].南京:南京理工大学,2010.
[7]沈琛.基础加固方法的研究与实际工程应用[D].合肥:合肥工业大学,2014.
[8]戚玉亮,王光谱.锚杆格构梁+土钉植草+钢管桩挡墙的组合支护方法在某半岩半土高边坡加固中的应用研究[J].广州建筑,2017,45(5):15-18.
[9]赖振荣.微型钢管桩复压处理技术[J].广州建筑,2005(3):19-21.
[10]高森亚.微型钢管桩在基坑支护中的应用研究[D].长沙:中南大学,2008.
[11]DBJ15-38-2005建筑地基处理技术规范[S].北京:中国建筑工业出版社,2005.