| In recent years,the concept of environmental protection and sustainable development had been included in the basic national policy,and green construction is vigorously promoted in construction industry.However,green construction research of highway engineering in China is in its beginning stage.With the rapid growth of highway mileage in our country,the impact of highway construction on the environment has become increasingly prominent.This paper focuses on the research on soft soil foundation treatment technology and green construction.Based on the extensive investigation and research on soft foundation treatment and green construction at home and abroad,this paper is summarized the construction process and quality control points of common soft foundation treatment technology,mainly includes soil filling method,solidified soil column method,granular material column method,cement fly-ash gravel pile method,drainage consolidation method and so on.This paper introduces the meaning and principles of green construction,analyzes the factors influenced the green construction of highway engineering,and expounds the weakness and control points of green construction.This paper also put forward some opinion respectively from several aspects,full participation,the whole process of management,energy and resource conservation and protection of ecological environment,as well as simplifies and concludes the evaluation index of green construction,mainly technical indicators,resource consumption indicators,environmental pollution indicators three categories.Technical indicators include the advanced nature of construction machinery and equipment,the application of new green construction technology,the difficulty of the construction process;resource consumption indicators include materials,energy,water consumption and temporary land use;environmental pollution indicators are vegetation Destruction,soil erosion,water pollution,air pollution,noise pollution and so on.Then,according to the factors influencing the environment of common soft foundation treatment of highway engineering,this paper analyzes the environment protection and optimization measures of different construction technology,which mainly includes land acquisition andenvironmental protection,energy and material consumption,transportation dust control,noise control,etc.All these can be used as a specific reference and guidance of green construction.Finally,the advantages and disadvantages of soft soil foundation treatment methods such as dredging in filling,plastic drainage plate,cement fly-ash gravel pile and high pressure jet grouting pile are verified by taking example of the soft foundation treatment of Huangshi City to Yangxin county highway project.By using design drawings,test data,to further clarify the improvement methods of soft foundation treatment in green construction,such as reasonable selection of abandon field,engineering waste recycling,environmental pollution control measures and so on.In the actual engineering,as the change of soft soil geology,as well as the different performance requirements of culverts,channels,bridgehead embarkment and general roadbed,under the premise of duration,environment,construction conditions and other factors,selecting the appropriate soft foundation treatment scheme,and taking specific measures of green environmental protection.As long as we realize the importance of green construction,we can still find the innovation of environmental protection from traditional technical scheme,and build a green civilization site of energy-saving and environmental protection. |
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