Research Of Supporting Design And Stability Of Construction Of Excavation Pit Of Shandong Integration Commercial Port

In ancient times, our ancestors began to put the slope excavation and simple wooden support. With the continuous development of human beings, civil engineering activities which is closely related to human survival conditions become more and more, the project of foundation pit engineering also become more and more. Over the past 1950 years, the domestic and international began construction of underground engineering, at the same time, the height of the building is higher and higher. At home, in recent years, underground facilities which is used for various purposes have sprung up, these facilities require the excavation of foundation pit, therefore, and the reasonable design of foundation pit and safety construction is very important for foundation pit. Meanwhile, the foundation pit become deeper and deeper and the scale of foundation pit become biger and biger. So the emergence of the potential safety hazard in the foundation pit have increased. The supporting design of deep foundation pit and construction technology has drawn greater attention, and it has become an important issue in the field of civil engineering.This paper, taking shandong commercial port of foundation pit engineering in one hundred as the background, introduces the engineering general situation, analyses the landform, strata, hydrogeology conditions and the surrounding environment and the pipeline distribution, summarizes the shandong together one hundred commercial port of foundation pit engineering features and difficulties. According to the characteristics of the project, combined with the common foundation pit supporting forms and field experience, select the reasonable mode of foundation pit supporting, and through the on the principle is the software optimization, according to the calculation results and the analysis of the geological conditions of construction site, the surrounding environment, combining the successful experience of jinan area, from the Angle of safety, economy, using the ground 3.5 m was determined using soil nail wall supporting (except no put on the east side slope slope space), between the lower anchor bolting of bored cast-in-situ pile, pile combined water stop curtain of the high pressure jet grouting pile form, be applicable to shandong commercial port engineering concrete design scheme of foundation pit. Finally, the blends together the commercial port of foundation pit engineering was introduced in detail the construction technology and construction quality assurance measures. At the same time, on-site monitoring is carried out, with real-time monitoring results to guide the construction process, strictly control the construction process, to ensure the construction quality and the safety of the deep foundation pit construction.