|Table of Contents|

Construction technologies of deep saline mud ground in tidal flat

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2015年06期
Page:
750-
Research Field:
Publishing date:

Info

Title:
Construction technologies of deep saline mud ground in tidal flat
Author(s):
Li Mingdong12Zhao Xiaoqing1Zhang Zhendong1Wang Yulin1 Gao Gonglve1Yang Min1Zhang Yonghong1Tian Anguo1
1.School of Civil Engineering,Huaihai Institute of Technology,Lianyungang 222005,China;
2.The Key Laboratory of the Coastal Zone Exploitation and Protection,Ministry of Land and Resource,Nanjing 210014,China
Keywords:
tidal flat saline mud lightweight soil sintered bricks ceramsite shallow layer drainage micro steel tube piles foundation underpinning
PACS:
TU447; TU448
DOI:
-
Abstract:
To solve the problems of deep soft ground and the corrosion of saline mud in tidal flats,construction technologies for deep saline mud ground in tidal flat are researched and practiced.The characteristics of tidal flat mud,mixed stabilized lightweight soil of tidal flat mud and aerocrete offscum,tidal flat mud sintered bricks and tidal flat mud sintered ceramsite are researched by indoor experiments.The consolidation technology of shallow layer drainage and foundation underpinning technology of micro steel tube piles are researched by field tests.Experimental results show that there is a saline mud layer of 8-40 m in thickness in Lianyungang tidal flat ground,which is weak, strong corrosive to steel,and weak or moderate corrosive to concrete.The strength of mixed stabilized lightweight soil of tidal flat mud and aerocrete offscum can be adjusted between 200-1000 kPa and used for embankment construction.After preloading drainage consolidation,if the dredeged sea mud is still not suitable for natural subgrade,it can be used for pile foundation after rapid processing.Micro steel tube piles can stop the settlement of shallow foundation in deep soft ground,and can boost the original foundation.Saline mud can be fired to sinter bricks and ceramsite instead of clay,salt content is greatly reduced in the sintering process.

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Last Update: 2015-12-31