Key Points of Subway Construction Technology Under Complicated Geological Conditions

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Tian Nai
Keyword(s):  
Construction Technology ◽  
Key Points ◽  
Geological Conditions ◽  
Subway Construction

scholarly journals Key points of subway construction technology under complicated geological conditions

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Tian Nai
Keyword(s):  
Technology Management ◽  
Construction Management ◽  
Construction Safety ◽  
Construction Technology ◽  
Application Process ◽  
Key Points ◽  
Geological Conditions ◽  
Project Construction ◽  
Subway Construction ◽  
Rural Construction

Abstract: With the development of urban and rural construction speed, in the subway project construction, regardless of its construction management,or its corresponding construction technology, have a wide range of applications, in which the complex geological conditions of subway construction technology management is one of them.Application is more important and more difficult to control one of the key. However, due to the current construction of the subway project construction technology management, there are still some lack of mature technology problems, which makes the subway construction technology in complex geological conditions in the management of the application process, there are still a variety of problems, including construction safety and construction quality, and thus also seriously affect the social stability and development. This paper analyzes and discusses the main points of subway construction technology under complex geological conditions.

Research on Shenyang Metro Line I Engineering underground Structural Waterproofing Technology

2013 ◽  
Vol 671-674 ◽  
pp. 1156-1159 ◽  
Author(s):  
Zhan Guo Zhu ◽  
Chun Yan Yao ◽  
Yue Zhao ◽  
Zhi Yang Tang ◽  
Yu Zhao
Keyword(s):  
Long Range ◽  
Material Selection ◽  
Design Concept ◽  
Construction Technology ◽  
Practical Application ◽  
Sodium Bentonite ◽  
Cold Regions ◽  
Geological Conditions ◽  
Construction Experience ◽  
Subway Construction

Subway engineering is a long range program. Metro structure waterproof is a major technology to ensure the durability of structure. With the experience accumulation and technical maturity of our country's subway construction, waterproof technology is developing fast. The design concept and material of underground waterproof stay updated. According to the Shenyang subway metro construction experience, this article do a research on the on the cold regions based on the geological conditions and climate characteristics. Focusing on the subarea waterproof and natural sodium bentonite soil waterproof blanket are described, this article make a detail analysis on the proof about the design concept, waterproofing system, material selection, construction technology and other aspects. The content of this article has been in the works in practical application, which can provides reference for other similar project .

scholarly journals Study on Key Points of Steel Structure Construction Technology on High-Rise Building

2015 ◽  
Vol 4 (4) ◽  
pp. 49
Author(s):  
Chao Chen
Keyword(s):  
Steel Structure ◽  
Normal Operation ◽  
Construction Technology ◽  
Quality And Safety ◽  
Construction Quality ◽  
Reference Function ◽  
High Rise ◽  
High Rise Building ◽  
Key Points ◽  
The Common

<p>Study of steel structure construction technology on high-rise building was needed to strengthen, in order to improve the construction quality and safety of our building, ensure the normal operation of production and living of people. Therefore, the article will analyze the common technology in steel structure construction of high-rise building, and expect able to play a certain reference function.</p>

Construction Technology of Shallow Pipe- Jacking Working Shaft

2011 ◽  
Vol 480-481 ◽  
pp. 1266-1270
Author(s):  
Liu Hui
Keyword(s):  
Side Wall ◽  
Soil Mass ◽  
Construction Method ◽  
Construction Technology ◽  
Reactive Force ◽  
Small Height ◽  
Key Points ◽  
Pipe Jacking ◽  
Design And Construction

During the pipe jacking construction, the bearing plates of jack need the support of great reactive force which is provided by the side-wall of the working shaft and the soil mass behind the wall. In the shallow pipe-jacking working shaft, the soil mass only can provide limited reactive force due to the small height of the soil mass behind the side-wall, which becomes the difficult point in the design and construction of the shallow pipe-jacking working shaft. This thesis takes the actual projects for the examples to introduce the construction technology of shallow pipe-jacking working shaft in details, including the construction key points like pre-grouting injection consolidation, ring beam construction method as well as reverse construction method.

Design and Siting for Large Diameter Well Type Repositories

2003 ◽  
Author(s):  
Sergey Dmitriev ◽  
Lev Prozorov ◽  
Aleksey Tkachenko ◽  
Andrey Guskov ◽  
Svetlana Korneva
Keyword(s):  
Large Diameter ◽  
Activity Level ◽  
Intermediate Level ◽  
Construction Technology ◽  
Actual Problem ◽  
Near Surface ◽  
Drilling Rig ◽  
Safe Level ◽  
Central Russia ◽  
Geological Conditions

RADON enterprises are historically responsible in Russia for institutional waste of low and intermediate activity level. MosNPO RADON is a leading organization for 16 enterprises of RADON system, established in the early 60-s, only 14 from which are now in operation and have about 10% of their repositories available for upcoming waste. Construction of new repositories and selection of new perspective sites is very actual problem for RAW management in Russia now. Traditionally near surface repositories are considered to be acceptable for storage or even disposal of low and intermediate level waste (LILW), which decay to safe level in some hundreds of years. Forty years experience in LILW isolation using near surface repositories at Russian RADON facilities has shown that a lot of operational and natural factors impact on the engineered barriers and may cause failure of the isolation (freezing-thawing cycles, construction works). In addition construction of new old-type repositories requires more area. Since 1997 development and testing of Large Diameter Wells (LDW) as a new type of repositories for low and intermediate level waste is carried out at Zagorsk site. MosNPO RADON specialists developed the LDW construction technology with the aim to use such wells for LILW isolation in moraine clays. The diameter of LDW-type repository may range from 1 to 5 m depending on drilling rig capabilities and performance parameters of host rock. The depth of well (repository) depends on geological parameters and hydro-geological conditions at the site. These features affect on the siting process by additional geological and hydro-geological requirements. In result of preliminary studying of Central Russia two regions were found to be perspective for construction of LDW-type repositories.

scholarly journals Construction Technology of Composite Cofferdam for Main Pier Bearing Platform of Dongjiang Lichuan Bridge

2020 ◽  
Vol 165 ◽  
pp. 04047
Author(s):  
Jianping Wang
Keyword(s):  
Steel Sheet ◽  
Economic Benefits ◽  
Construction Technology ◽  
High Quality ◽  
Rock Stratum ◽  
Advantages And Disadvantages ◽  
Construction Methods ◽  
Bored Pile ◽  
Geological Conditions ◽  
Pile Cap

Dongjiang Lichuan Bridge in Dongguan City is a curved tower curved beam cable-stayed bridge with a main span of 138m and no back cable. The main pier cap is located on the bank slope of Dongguan Waterway on one side of Nandi Road. The cushion cap is dumbbell type, and the left and right cushion caps are connected by tie beams. In most areas, the top of rock stratum is above the bottom of bearing platform. The rock stratum within the buried depth of bearing platform is moderately to strongly weathered argillaceous siltstone. The geological conditions are complex and the construction is difficult. In line with the principles of speeding up the construction process and improving economic benefits, comprehensive analysis and weighing advantages and disadvantages, the main pier cap adopts a composite cofferdam of filling soil to build an island and combining bored pile rows and steel sheet piles. The construction task of bearing platform of main pier has been completed with high quality. Compared with other cushion cap construction methods, this construction method has the advantages of fast construction, high quality, simple safety, energy saving and environmental protection. This paper briefly introduces the design scheme of composite cofferdam, expounds in detail the operation steps of steel sheet pile construction and the problems needing attention in construction, and provides good reference experience for similar pile cap construction.

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