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 .

Construction Technology of Cangyuan Tunnel of LanYu Railway

2012 ◽  
Vol 256-259 ◽  
pp. 1291-1295
Author(s):  
Su Qi ◽  
Ye Zhang ◽  
Shu Hao Liu ◽  
Nian Liu
Keyword(s):  
Debris Flow ◽  
Rapid Development ◽  
Surrounding Rock ◽  
Construction Technology ◽  
Road Tunnel ◽  
Step Method ◽  
Geological Conditions ◽  
Construction Experience ◽  
Pass Through ◽  
The Stability

The phenomenon of railway and road tunnel passing through the debris flow gully is more and more prevalent, for the rapid development of the construction of railways and highways. At present, the construction experience of tunnels passing through the debris flow gully is not rich enough, so the study on this part is necessary. The engineering geological conditions of Cangyuan Tunnel are complex and the construction of which is difficult. The three-step seven-step method, tunnel surface grouting and tunnel root piles reinforcement basis are used to ensure the stability of the tunnel surrounding rock, based on the characteristics of Cangyuan Tunnel which passes through the debris flow gully. The deformation is controlled within the specification range, which indicates that the construction effect of Cangyuan Tunnel is good. These construction measures solve the construction problems of tunnels which pass through the debris flow gully and ensure project quality and duration, therefore, these construction measures can be used in similar projects.

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.

Design Concept for Steel GBS with Crude Storage in Arctic and Cold Regions

2015 ◽  
Author(s):  
Deepti Bandi ◽  
Mike Paulin ◽  
Andreas Georghiou ◽  
Nagavaishnavi Dontula
Keyword(s):  
Design Concept ◽  
Cold Regions

Green Design and Manufacturing Technology on Hoisting Device of the Silt Coal Car Loader

2011 ◽  
Vol 328-330 ◽  
pp. 220-223
Author(s):  
Ping Huai Mao ◽  
Run Dong Chen ◽  
Bing Zhai
Keyword(s):  
Science And Technology ◽  
Manufacturing Technology ◽  
Design Concept ◽  
Green Design ◽  
Practical Application ◽  
Working Process ◽  
Manufacturing Technique ◽  
Design And Manufacturing ◽  
The Common ◽  
Working Device

This paper analyzes the common faults of the YMZ light silt coal car loader's hoisting device in working process, and supplies several solutions; Simultaneously, it mainly introduces two types of manufacturing technique about hoisting device's parts design and improvement in practical application and appraises the effect of the green design and manufacturing technique in the working device; The article concludes that improved workpiece performance is of great practical value; As the designers are designing the products, only when they should combine the new design concept and the mode of thinking with the green design concept, and attach importance to the innovation of science and technology during the designing process as well, and finally bring into play the advantages of the technology, can they produce safe, powerfrugal, efficient and shapely green products which are popular with people at home and abroad.

Research of Large LNG Tank Structure

2014 ◽  
Vol 1070-1072 ◽  
pp. 378-382
Author(s):  
Ting Ke Li ◽  
Jia Di Li ◽  
Li Fu Xiao ◽  
Wei Li
Keyword(s):  
Storage Tank ◽  
Material Selection ◽  
Type Material ◽  
Size Optimization ◽  
Construction Technology ◽  
Cryogenic Storage ◽  
Lng Tank ◽  
Over Time

In recent years, the demand of Large LNG storage tank increases over time, but large LNG cryogenic storage tank has not yet established a series of standards and norms, and tank construction technology is also lagging behind. Aiming at the design of the tank form a single, smaller, did not tackle the issue of, this paper mainly discusses from Large LNG tanks, such as type, material selection, structure ,size optimization and so on, which can provide reference for independent construction of storage tank.

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.

Strategy for Application of Non-Wood Fibrous Material on Roofs at Rurual Areas in Cold Region

2015 ◽  
Vol 730 ◽  
pp. 105-108
Author(s):  
Xin Ran Wang ◽  
Yu Zhang
Keyword(s):  
Fibrous Material ◽  
Thermal Environment ◽  
Material Selection ◽  
Poor Quality ◽  
Engineering Practice ◽  
Construction Technology ◽  
Design Strategies ◽  
Cold Region ◽  
Climate Conditions ◽  
Insulation Performance

Large energy consumption, serious pollution and poor quality of indoor thermal environment are generally seen during construction in villages and towns in China nowadays, leading to poor building insulation performance. Envolope of enclosure of a buidling is key to its insulation performance. Material selection of building enclosures and green design of construction technology are the key to promoting insulation performance of the building as villages and towns in cold region are subject to special geographical position, climate conditions and economic factors. With a focus on research of traditional non-wood fibrous material modification with existing technology and the engineering practice in non-wood fibre roof in villages and towns of cold region, this paper came up with the prospects of its applicatin in the following design strategies including “ecological and conservation-oriented roofing with modified local materials, new hybrid roofing with simplified construction technology and paper tensioning roofing with innovative synthetic materials”.

The Trachtenberg system as a motivational device

1966 ◽  
Vol 13 (8) ◽  
pp. 677-678
Author(s):  
William E. Yates
Keyword(s):  
Long Range ◽  
Practical Application ◽  
Learning Situation ◽  
Slow Learners ◽  
Arithmetical Knowledge

The poorly motivated arithmetic student reacts, not to the long-range value of a given quantity of arithmetical knowledge, but to the immediate use to which it can be put. In the final accounting, the value of this knowledge is determined by the student, not by the teacher. To help the student develop this sense of value we attempt to increase the meaningfulness of arithmetic by providing activities to demonstrate its practical application in everyday situations. Such an approach is usually successful in reaching the majority of these students. But not all will respond to this form of motivation. To some slow learners in the classroom these activities are only briefly amusing, and as a result the pupils are unable to become more than momentary participants in the learning situation.

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