Analysis of Land Subsidence Using A Combination of Preloading and Prefabricated Vertical Drain Methods

Q4 Physics and Astronomy
Rahayu Rahayu, Syafwandi Syafwandi, Aldo Wirastana Adinegara, Agyanata Tua Munth, A. Sumarno
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引用次数: 0

Abstract

Pertamina Balongan Indramayu's New Construction Jetty & Temporary Access Road Construction Project is the construction of a new jetty (silting prevention pier) located on a loamed land, which consists of dredging work on the area to be built by the jetty, protection of existing pipes, and erection of piles. In the implementation of the jetty construction, there are several reviews that need to be considered, such as soil elastic subsidence and soil consolidation subsidence. The method used for land subsidence is the Preloading method and is combined with the use of PVD to increase the time of decline. The results of this study found an elastic decrease using the Preloading method, a result of 0.7765 meters was obtained due to the presence of a stockpile load and an implementation load of 22.1312 kN/m2 on Elv. ± 1.00 m – STA. 0 + 025 m. Meanwhile, the decrease in consolidation (Sc + Ss) using the Preloading method, obtained a result of 4,949 meters due to the heap load and implementation load of 27,201 kN/m2 on Elv. ± 1.00 m – STA. 0 + 025 m and the length of time it takes to achieve the degree of consolidation of the plan (Uv = 90 %) using the Preloading method obtained results, which is 297 days. When the Preloading method is combined with using the Prefabricated Vertical Drain (PVD) method, the result of the length of time (t) needed to achieve the degree of consolidation of the plan (Uv = 90 %) is 158 days using a quadrilateral pattern installation PVD with a distance of 0.8 meters.
预压与预制垂直排水相结合的地面沉降分析
Pertamina Balongan Indramayu的新建筑防波堤和临时通道建设项目是在一个湿地上建造一个新的防波堤(防淤积墩),该项目包括在防波堤建造的区域进行疏浚工作,保护现有管道,以及架设桩基。在实施防波堤施工时,需要考虑土体弹性沉降和土体固结沉降等几个方面的审查。地面沉降采用预压法,并结合PVD法增加沉降时间。研究结果表明,采用预压方法,由于Elv上存在储备荷载和22.1312 kN/m2的实施荷载,弹性减小了0.7765米。±1.00 m - STA。0 + 025米。同时,由于Elv上的堆载和实施荷载为27201 kN/m2,采用预压方法减少固结(Sc + Ss)的结果为4949米。±1.00 m - STA。0 + 025 m和达到计划固结程度所需的时间长度(Uv = 90%)采用预压法获得结果,为297天。当预压法与预制垂直排水(PVD)法相结合时,采用四边形模式安装PVD,距离0.8米,达到计划固结程度(Uv = 90%)所需的时间长度(t)为158天。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Neutron News
Neutron News Physics and Astronomy-Nuclear and High Energy Physics
CiteScore
0.30
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0.00%
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36
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