Research on construction technology of color steel plate roof in situ profiling and installation

2016 ◽  
Author(s):  
Shan Zhu ◽  
Hai-Ping Wang ◽  
Xiao-Xu Meng
Keyword(s):  
Steel Plate ◽  
Construction Technology

Construction Technology of Geogrid with Simplified Wrapped Face to Reinforce Swelling Rock Slope

2011 ◽  
Vol 261-263 ◽  
pp. 1690-1693
Author(s):  
Feng Yi Tan ◽  
Rong Hua Zou ◽  
Han Bing Hu ◽  
Zu Kai Lin
Keyword(s):  
Rock Slope ◽  
Layer By Layer ◽  
Construction Technology ◽  
In Situ Test ◽  
Whole Process ◽  
Test Region ◽  
North Water ◽  
Main Canal ◽  
Swelling Rock

The swelling rock slope reinforced by geogrid with wrapped face was one of reinforced methods in the swelling rock test region of main canal in South-to-North Water Division Project, the key step was the geogrid with wrapped face in layer by layer, which was not only the core step to make sure the reinforced swelling rock slope with geogrid as a integrality, but also the most complex, time consuming and cost in the whole process. From the in situ test, the construction technology and related construction parameters of geogrid of simplified face to reinforce the swelling rock slope was obtained, in which the construction of geogrid with wrapped face was optimized, the construction progress was improved and its cost was reduced, which contributed to the generalization and application of geogrid with simplified wrapped face to reinforce swelling rock slope in the middle-route of South-to-North Water Division Project, meanwhile, it was provided as a references for similar engineering.

Construction Technology and Organization of Jiande Yangxi Main Bridge

2013 ◽  
Vol 671-674 ◽  
pp. 1988-1992
Author(s):  
Xi Jiang ◽  
Tian Qing Yu
Keyword(s):  
Steel Wire ◽  
Suspension Bridge ◽  
Construction Technology ◽  
Main Cable ◽  
Construction Operation ◽  
Operation Platform ◽  
Main Girder ◽  
Wire Strand ◽  
Main Bridge

The Yangxi main bridge for 49+120+49 m the self-anchored suspension bridge, the main girder procedure full framing in situ girder construction, bridge tower using piecewise casting method construction, use scaffolding as construction operation platform. Main cable construction using prefabricated parallel wire strand method (PPWS), first within the plant into steel wire strand, roll in the drum on delivery to the bridge site erection points, with traction rope by stock installation in place. Saddle the fission lifting, cable clamp installed application to the calibration of jack import screw tension 420 kn, and three times repeated tension, sling the factory-made after installation in place. Can be used as the same bridge comparison and reference.

scholarly journals Construction and Testing of a Novel in-situ Photoelectro-Fenton System Based on an Arrangement of a Carbon Sponge and a Carbon Steel Plate

2017 ◽  
Vol 58 (3) ◽  
Author(s):  
Ivonne Arely González Reyes ◽  
M. E. De Anda Reyes ◽  
Francisco J. Rodríguez Valadez ◽  
Juan Manríquez ◽  
Erika Bustos ◽  
...  
Keyword(s):  
Free Radicals ◽  
Carbon Steel ◽  
Uv Irradiation ◽  
Steel Plate ◽  
Color Removal ◽  
Orange Ii ◽  
Iron Ions ◽  
Fenton Process ◽  
Fenton System

A novel photoelectro-Fenton system was built by coupling a carbon sponge (CS) with a carbon steel plate (CSP). When this system contacts a solution containing orange II dye (OGII) under ultraviolet (UV) irradiation, 68% of the solution color was removed compared with 0% without UV irradiation. The tests indicate that the CS-CSP arrangement releases iron ions, a phenomenon associated with the removal of 23% of the solution color, a percentage similar to that obtained when Fe<sup>2+</sup> and Fe<sup>3+</sup> salts are directly placed into the dye solution. The identification of oxidizing free radicals and the color removal percentages indicate that the CS-CSP coupling can operate as in situ Fenton process.

On Preparation of In Situ Composite Steel with Ultra-High Strength and its Thermal Stability

2010 ◽  
Vol 152-153 ◽  
pp. 436-440
Author(s):  
Jun Zhao ◽  
Han Zhang ◽  
Zhi Wang ◽  
Hong Yan Zhai ◽  
Quan Xing Wen ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Crystal Size ◽  
Steel Plate ◽  
Lath Martensite ◽  
Rolling Direction ◽  
High Strength ◽  
Long Time ◽  
New Type ◽  
Lath Morphology

A new type of in-situ composite nano-multilayer plate with ultra-high strength (b 2112 MPa), Q235 steel plate with nano-layered structure of lath martensite produced by severe cold-rolling, was developed. After cold-rolling, subsequent annealing has great effect on the deformed lath morphology and grain refinement. Microstructure recrystallizing course have taken place after long time annealing at 350 °C. The recrystallization activation energy is 151 kJmol-1. Microstructure characteristics along rolling direction arrangement was decreased after annealing at 400 °C. In addition to the ultrafine ferrite grains, nano-carbides precipitated uniformly in the specimen annealed at 500 °C. Annealing at and above 600 °C resulted in coarse ferrite grains with spheroidized coarse carbides, causing grain growth. The average crystal size is about 4.7 m after annealing for 60 min at 600 °C.

The Ancient Timber Roofing Structures in Emilia-Romagna Region

2013 ◽  
Vol 778 ◽  
pp. 968-975
Author(s):  
Anna Marzo ◽  
Giuseppe Marghella ◽  
Maurizio Indirli
Keyword(s):  
Complex Structure ◽  
Mitigation Measures ◽  
Construction Technology ◽  
Seismic Behaviour ◽  
Emilia Romagna Region ◽  
Historic Memory ◽  
Historic Centre ◽  
The Town ◽  
Non Destructive

Widespread survey, aiming at the evaluation of both vulnerability of the structures and usability of the buildings, have been carried out after the seismic events occurred on May 2012 in Emilia-Romagna districts. During the surveys, several cover typologies have been verified, which often evidenced lack in terms of earthquake-proof features. In contrast, some ancient timber roofs showed an original construction technology, according to the seismic mitigation measures. Clearly, the attention to the behaviour of the covering structures against the horizontal actions was due to the historic memory related to earthquakes occurred in the past or simply due to a good construction practice lost during the following years.This paper it is devoted to explain the analysis campaign carried out on an ancient timber covering structure located in the historic centre of the town of Cento (FE), aiming at the characterisation of its seismic behaviour. The study consists on three subsequent steps: 1) in-depth visual and geometrical survey; 2) in-situ non-destructive tests for material characterization; 3) Finite Element modelling of the complex structure.

Experimental pressure and sealing plug as part of the European DOPAS project – deep geological repository plug demonstration

Clay Minerals ◽  
2016 ◽  
Vol 51 (4) ◽  
pp. 589-601
Author(s):  
Irena Hanusová ◽  
Jiří Svoboda ◽  
Petr Večerník
Keyword(s):  
Czech Republic ◽  
Research Centre ◽  
International Project ◽  
Construction Technology ◽  
Deep Geological Repository ◽  
The Czech Republic ◽  
Geological Repository ◽  
Experimental Pressure

AbstractThe objective of the DOPAS international project is to design a sealing-plug system for deep geological repository (DGR) use, to provide detailed plans for the design of such plugs, to test the characteristics of the materials to be used and the construction technology and to install four experimental in situ plugs. The Czech experimental pressure and sealing-plug (EPSP) experiment is being conducted in a rock environment consisting of granitoids at the Josef Regional Underground Research Centre. The concept of the experiment is based primarily on the use of materials and technology available in the Czech Republic and the principal aim is to demonstrate the technical viability and functioning of a pressure-resistant plug located in a future DGR. The completion of the EPSP experiment will contribute towards both the demonstration of how sealing-plug systems behave under real underground conditions and the long-term safety of a future DGR in the Czech Republic.

Cast - In Situ Concrete Hollow Plates, the Application of the Teaching Building

2012 ◽  
Vol 182-183 ◽  
pp. 28-32
Author(s):  
Gao Qian Hu ◽  
Shuang Xi Hu
Keyword(s):  
Construction Technology ◽  
Design And Construction ◽  
Construction System

The design and construction characteristics of cast-in-situ concrete hollow floor are introduced and the difficulties of the construction system are discussed in this paper. Based on the analysis of the engineering, the construction technology is introduced and its application is evaluated.

A New Type of Cast In Situ Reinforced Concrete Biaxial Hollow Slab with Property of Thermal Insulation

2011 ◽  
Vol 368-373 ◽  
pp. 448-451
Author(s):  
Wei Hong Xuan ◽  
Yong Wan ◽  
Yu Zhi Chen ◽  
Pan Xiu Wang
Keyword(s):  
Reinforced Concrete ◽  
Carrying Capacity ◽  
Fundamental Principle ◽  
Light Weight ◽  
Load Carrying Capacity ◽  
Construction Technology ◽  
Thermal Insulating ◽  
Load Carrying ◽  
New Type

The construction technology and fundamental principle of a new kind of cast-in-situ reinforced concrete biaxial hollow slab with property of thermal-insulating is proposed in this paper. Compared with ordinary floor, the biaxial hollow slab is well load-carrying capacity in two-direction, light weight and thermal -insulating property.

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