强夯置换在曹妃甸矿石码头堆场的应用研究

发布时间：2018-01-05 19:31

本文关键词：强夯置换在曹妃甸矿石码头堆场的应用研究　出处：《天津大学》2015年硕士论文　论文类型：学位论文

【摘要】：曹妃甸隶属于河北省唐山市,地处唐山南部沿海、渤海湾中心地带,辐射华北、西北、东北,面向东北亚和全世界,是连接东北亚的桥头堡。是唐山市打造国际航运中心、国际贸易中心、国际物流中心的核心组成部分,是河北省国家级沿海战略的核心,是京津冀协同发展的战略核心区。近年来,曹妃甸地区进行大量的围海造陆,而处理填海造陆工程的主要技术手段就是强夯置换法,因此,将强夯置换法的施工参数作为一个研究课题可以解决很多围海造陆工程的切实需要,本文通过对曹妃甸矿石码头三期堆场的强夯置换研究,深入的对强夯置换的施工参数、影响深度等进行分析,希望通过对此工程的系统研究为今后曹妃甸地区的类似工程提供一些参考。本人在曹妃甸地区的围海造陆工程中从事了大量与强夯有关的设计与施工工作,对强夯置换有一定得了解,也得到了大量的工程资料。本文以矿石码头三期堆场具体工程为例,通过对该工程的施工设计、监测及夯后检测结果,得出强夯置换的各种施工参数,为今后本地区的类似工程提供可供借鉴的施工参数,具体研究内容为:(1)根据试验区的原位测试及现场的监测推算出合理的夯点距离,进而得出夯击能与夯点间距的之间的一些关系。(2)通过现场孔隙水压力的监测得到强夯置换的最佳夯击能与每次遍夯之间的时间间隔。(3)根据原位试验测得强夯置换的有效影响深度并测得夯后地基的承载力特征值,判定强夯后的加固效果。(4)作者的着力点在曹妃甸地区的强夯置换工程,所做试验与所得结果存在很大的地域差异性,但对曹妃甸地区的类似工程可以提供一些可借鉴的参考价值。
[Abstract]:Caofeidian belongs to Hebei province of Tangshan City, located in the southern coast of Tangshan, the centre of Bohai Bay, northeast, northwest, North China radiation, facing Northeast Asia and the whole world is connected to Northeast Asia. Tangshan City is the bridgehead to build an international shipping center, international trade center, core international logistics center is the core part of Hebei province the national coastal strategy, is the Beijing Tianjin Hebei collaborative development strategy of the core area. In recent years, a lot of land reclamation in Caofeidian area, and land reclamation project is the main technical means of dynamic replacement method, the construction parameters of dynamic replacement method as a research topic can solve the practical needs of many reclamation engineering, based on the three yard Caofeidian ore terminal dynamic replacement of construction parameters of strong tamping replacement depth, the influence depth is analyzed, hope that through this System engineering to provide some reference for similar projects in the future. I am in Caofeidian area in Caofeidian reclamation projects in a large number of dynamic design and construction work related to dynamic replacement, may have a certain understanding, but also get a lot of engineering data. In this paper, three yard engineering specific ore terminal for example, through the design and construction of the project, monitoring and dynamic test results, the various construction parameters of dynamic compaction replacement, construction parameters reference for similar projects in the future of the region, the main contents are as follows: (1) according to the monitoring of in situ test and field test area to calculate the reasonable tamping point distance, and then draw some relationship with the tamping energy spacing between. (2) through the field monitoring of pore water pressure to obtain the best dynamic compaction replacement - and compaction between each time interval (. 3) according to the effective effect of in situ test of dynamic replacement depth and the measured dynamic characteristic value of subgrade bearing capacity and reinforcement effect of dynamic decision. (4) the author focus on Caofeidian area dynamic replacement project, the test results and there is great regional difference, but a similar project on the Caofeidian area can provide some reference value.

【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU472.31

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