珊瑚礁灰岩地基的沉降计算方法
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摘要
珊瑚礁灰岩作为一种特殊的岩土类型,研究其工程力学性质对促进沿海珊瑚礁地区的工程建设具有重要意义。通过对比珊瑚礁灰岩与砂性土在工程性质上存在的差异,得出港口工程规范中沉降的计算方法在珊瑚礁地基应用的局限性。在此基础上,采用Schmertmann经验(半经验)公式法和欧标SPT法对苏丹一个已建的重力式码头进行设计复核。结果表明,采用基于SPT指标的经验(半经验)公式对珊瑚礁灰岩地基沉降计算具有较强的可操作性和适用性,可为类似工程提供参考。
Coral-reef limestone is a special type of rock and soil,and studying its engineering mechanical property has great significance to promote the construction of coastal coral-reef area. We compare the engineering property differences between coral-reef and normal sand,obtain the limitation of calculating the settlement of coral-reef limestone foundation by the method of port engineering specification.Based on the above,we use the Schmertmann empirical( semi-empirical) formula method and SPT method from Europe standard to re-check the foundation design for a completed gravity wharf project in Sultan.The results show that empirical( semi-empirical) settlement calculation method based on SPT value has strong operability and applicability,and it can provide references for the similar projects.
Coral-reef limestone is a special type of rock and soil,and studying its engineering mechanical property has great significance to promote the construction of coastal coral-reef area. We compare the engineering property differences between coral-reef and normal sand,obtain the limitation of calculating the settlement of coral-reef limestone foundation by the method of port engineering specification.Based on the above,we use the Schmertmann empirical( semi-empirical) formula method and SPT method from Europe standard to re-check the foundation design for a completed gravity wharf project in Sultan.The results show that empirical( semi-empirical) settlement calculation method based on SPT value has strong operability and applicability,and it can provide references for the similar projects.
引文
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[8]王继成,叶剑.浅谈苏丹珊瑚礁地质条件下的海港规划与设计[J].中国水运(下半月),2012,12(6):18-20.
[2]赵焕庭,宋朝景,卢博,等.珊瑚礁工程地质研究的内容和方法[J].工程地质学报,1997,5(1):21-27.
[3]梁文成.苏丹红海沿岸珊瑚岩土层地基承载力探讨[J].港工技术,2010,47(3):52-53.
[4]中交第四航务工程局有限公司,中交四航局港湾工程设计院有限公司.重力式码头设计与施工规范:JTS167-2-2009[S]:北京:人民交通出版社,2009.
[5]波勒斯.基础工程分析与设计[M].童小东,译.5版.北京:中国建筑工业出版社,2004.
[6]李广信.高等土力学[M].2版.北京:清华大学出版社,2016.
[7]British Standards Institution.Eurocode 7-geotechnical design-part2:ground investigation and testing[S].London:British Standards Institution,2007
[8]王继成,叶剑.浅谈苏丹珊瑚礁地质条件下的海港规划与设计[J].中国水运(下半月),2012,12(6):18-20.