Jacking Force Controlling Technique of PC Beam Flexible Piers Based on Multiple Points Pushing Method

2013 ◽  
Vol 395-396 ◽  
pp. 548-554
Author(s):  
Cheng Zhu ◽  
Rui Li ◽  
Zhi Yun Zhang
Keyword(s):  
Construction Cost ◽  
Construction Method ◽  
Control Technology ◽  
Construction Technology ◽  
Relative Navigation ◽  
Construction Process ◽  
Multiple Points ◽  
Construction Period ◽  
Jacking Force

With the advantages such as shortening the construction period, not affecting the relative navigation and effectively reducing the construction cost, jacking construction technology has been widely applied, as the construction method compared with other conventional construction method is more complicated, it is necessary to discuss the control technology of jacking force during the construction process.

scholarly journals Typical Construction Technology and Method of UHV Main Transformer

2018 ◽  
Vol 38 ◽  
pp. 04003
Author(s):  
Chen Kerui ◽  
Han Yang ◽  
Wang Lei ◽  
Pei Ying ◽  
He Dengsen ◽  
...  
Keyword(s):  
Construction Method ◽  
Construction Technology ◽  
Construction Process ◽  
And Training

According to the latest experience of UHV transformer on-site installation work, according to the rules and regulations requirements, the construction process and process of UHV transformer are summarized, and a typical UHV transformer construction method commonly used at present is obtained. Operation comes down to the arrival of acceptance, annex installation, vacuum oiling and hot oil circulation, sealing inspection, standing five processes. In accordance with the above process steps, this paper is divided into five parts to introduce the process and method of UHV transformer construction in order to guide the on-site construction and training teaching.

Rapid Construction Technology for Railroad Concrete Infrastructure: Microwave Heat Curing Technology

2015 ◽  
Author(s):  
Taehoon Koh ◽  
Seonkeun Hwang ◽  
Junghoon Yoo ◽  
Donggeun Lee
Keyword(s):  
Heating System ◽  
Curing Temperature ◽  
Cold Weather ◽  
Concrete Lining ◽  
Construction Technology ◽  
Construction Process ◽  
Construction Period ◽  
Heat Curing ◽  
Rapid Construction ◽  
Microwave Heat

The cast-in-place concrete lining construction process represents about 25% of the total railroad tunnel construction period. Moreover, the construction period for lining concrete depends on the speed of the curing process of the lining concrete. Therefore, in cold weather when the air temperature in mountain railroad tunnel is consistently 10 degrees or below, equipment for heat insulation of cast-in-place concrete lining, such as a portable fossil fuel heater, must also be prepared to maintain an appropriate curing temperature in the tunnel. It generally takes about 24 to 36 hours to reach the compressive strength (3 to 5MPa) required to remove the lining form. Recently, microwave heat curing technology has been developed as a way of substantially reducing the concrete curing time, to achieve a reduction in the total construction period. The microwave heating system developed in this technology is comprised of a microwave generator, cavity, insulator, and exothermic body (microwave irradiated pyrogen). In this system, microwaves generated from the magnetron are irregularly reflected inside the cavity, and rapidly heat up the exothermic body so that the heat is transferred to the lining form and the concrete in turn, resulting in the accelerated hydration of concrete. Based on the field test data from the construction of the railroad tunnel cast-in-place concrete lining, it is found that this technology is able in 6 to 12 hours to complete the curing of concrete lining sufficiently to remove the form. It is hoped that this approach will substantially reduce the construction period and cost of tunnel lining, even during cold-weather.

Study on the Application of Computer Synchronous Control in Lift-Slab Construction for Steel Frame Structures

2011 ◽  
Vol 216 ◽  
pp. 45-49
Author(s):  
Xian Lei Cao ◽  
Zhi Feng Zhang
Keyword(s):  
Frame Structures ◽  
Layer By Layer ◽  
Control Technology ◽  
Construction Process ◽  
Slab Method ◽  
Construction Period ◽  
Synchronous Control ◽  
Steel Frame Structures ◽  
Speed Up ◽  
The Stability

By optimizing construction process, the laminated lift-slab method that means to lift two slabs one time upgraded from the traditional layer by layer lifting was proposed, the method in optimizing the construction process, shorten the construction period and improve the stability of group column has the significant advantages. Studied the application of computer synchronous control technology and solved the non-synchronization difficult problems in lifting slab, by controlling the lifting height error, which can reduce the board's destruction, reduce the burden uniformity of hoist, increase the stability of group column and speed up the construction progress. Therefore, the application of computer synchronous control technology in construction process has obvious economic and technical advantages.

Research on Detail-Structure Construction Technology of Outside Heat Preservation of Exterior Walls

2014 ◽  
Vol 548-549 ◽  
pp. 1790-1794
Author(s):  
Xia Zhao ◽  
You Ping Ding ◽  
Xiu Yan Zhang
Keyword(s):  
Construction Technology ◽  
Air Conditioner ◽  
Construction Process ◽  
External Wall ◽  
Similar Construction ◽  
Preservation Technology ◽  
Structure Treatment ◽  
Heat Preservation

In order to analyze the effect of heat preservation, the heat preservation technology of detail structure, such as decorative lines of external walls, edge beam and edge column, windows, balcony and laying position of air conditioner, have been well treated under the system of thin plastered external wall based on EPS. Moreover, the technical-economy benefits of detail structure treatments have been analyzed by comparing with those without detail structure treatment. The results show that better heat preservation and economy benefits would be created by detail structure treatment, which could provide good reference for similar construction process.

Analysis of Primary Aluminum Composite Panel Gypsum Board Construction Method Paste

2011 ◽  
Vol 255-260 ◽  
pp. 161-165
Author(s):  
Xiang Rong Zhang ◽  
Lu Li
Keyword(s):  
Primary Aluminum ◽  
Economic Benefits ◽  
Construction Method ◽  
Composite Panel ◽  
Aluminum Plate ◽  
Gypsum Board ◽  
Aluminum Composite ◽  
Quality Requirements ◽  
Construction Period ◽  
Silicone Adhesive

Gypsum board as the basis, combined with double-sided adhesive sponge and neutral silicone adhesive connection, this method using gypsum board as the primary fire to A-level, affordable. With high construction speed, short construction period, it can save money and meet the quality requirements and bring greater economic benefits to investors. Therefore, the gypsum board primary aluminum plate construction method paste will be introduced to more and more application.

Bridge bearing solutions that facilitate quick and efficient bearing installation and bridge construction

2019 ◽  
Author(s):  
Simon Hoffmann ◽  
Amit Kutumbale ◽  
Danilo Della Ca'
Keyword(s):  
Load Distribution ◽  
Construction Method ◽  
Construction Process ◽  
Vital Function ◽  
Bridge Construction ◽  
Construction Methods ◽  
Efficient Construction ◽  
Critical Components ◽  
Bridge Bearing ◽  
Segmental Bridge

<p>A bridge’s bearings, arguably its most critical components, perform a vital function throughout the bridge’s service life, but the bearings used can also have a significant impact on the bridge construction process. Suitably designed adjustable bearings are an integral part of the incremental launch method of bridge construction, for instance, which can be a very efficient construction method. Adjustable bearings may also support other bridge construction methods, such as segmental bridge construction, where fixities/freedoms that applied during the construction phase require to be changed before the bridge enters service. Lifting bearings, the height of which can be increased, may enable a lack of precision in the structure to be tolerated, and measuring bearings may enable load distribution during bridge construction to be verified, where this is required by the construction method. Design features of otherwise standard bearings that support quick and high-quality installation can also contribute towards the efficiency of the overall bridge construction process, as can the use of bearing designs which minimize bearing size. Bearing solutions and features that facilitate bearing installation and bridge construction in ways such as these are described.</p>

scholarly journals An Investigation into Factors Influencing Construction Costs Based on Japanese, UK and US Contractor Practice

2012 ◽  
Vol 2 (2) ◽  
pp. 27-35
Author(s):  
Hong Xiao ◽  
David Proverbs
Keyword(s):  
Indirect Costs ◽  
Construction Cost ◽  
Office Building ◽  
Construction Process ◽  
Close Attention ◽  
Construction Costs ◽  
Cost Performance ◽  
Factors Influencing ◽  
Site Design ◽  
The Uk

Construction cost is a major concern to both clients and contractors. Based on a hypotheticalconstruction project (a six-storey concrete framed office building), cost and otherrelated information was collected through a survey of contractors in Japan, the UK and theUS. Using multiple regression analysis it was found that lower overheads, less prefabricatedcomponents, and fewer design variations could reduce construction cost. Overheadslargely represent indirect costs to contractors and if reduced can lead to increased profitlevels and improved competitiveness. The use of prefabricated components may be problematicwhere there are delays in production, insufficient coordination between design andconstruction, and congested transportation on site. Design variations during constructionbring about uncertainties and are disruptive to the construction process. These factorshave paramount impact on construction cost and demand close attention and consideration.Contractors are advised to reduce the costs of their overheads and utilise prefabricationappropriately, while clients and designers should minimise the number of designvariations during construction if better cost performance is desired.

Deformation Monitoring and Data Analysis for Metro Construction with Mining Method in Dalian

2013 ◽  
Vol 353-356 ◽  
pp. 1604-1608
Author(s):  
Guang Bin Bai ◽  
Jie Zhao ◽  
Li Sheng Liu
Keyword(s):  
Data Analysis ◽  
Construction Method ◽  
Deformation Monitoring ◽  
Monitoring Data ◽  
Ground Subsidence ◽  
Tunnel Construction ◽  
Mining Method ◽  
Construction Process ◽  
Subway Tunnel ◽  
The Future

Based on a subway tunnel construction, the construction method was introduced. The ground subsidence, crown settlement and convergence displacement caused by the cut tunnel are monitored during the tunneling construction and the results of monitoring data for them are analyzed. This technology wells to guide the tunnel-entering construction effectively and avoid the tunnel-entering construction process prone to landslides, thus ensuring the safety of the tunnel construction and will guiding the future construction.

The Study on Foaming Characteristics of Foamed Asphalt in Cold Recycling Technology

2011 ◽  
Vol 243-249 ◽  
pp. 4293-4296
Author(s):  
Jing Li Liu ◽  
Lian Yu Wei ◽  
Guo Qiang Zhang
Keyword(s):  
Quality Control ◽  
Theoretical Basis ◽  
Asphalt Mixture ◽  
Construction Process ◽  
Environment Protection ◽  
Effect Evaluation ◽  
Construction Period ◽  
Foamed Asphalt ◽  
Recycling Technology ◽  
Cold Recycling

Through the foaming mechanism and foaming effect evaluation, this paper analyzes the production procedure, optimum content and strength of foamed asphalt mixture thoroughly. Combined with the construction process quality control and inspection and acceptance criteria, this paper provides data for reference and theoretical basis for application of cold recycled technology of foamed asphalt to pavement project. Its construction without disrupting traffic, thus shorten the construction period and improve efficiency, which also have advantages such as energy conservation, environment protection and economy. Above all, it is beneficial to foamed asphalt′s popularization and application.

scholarly journals “Integrated” Solution and Engineering Application of Assembled Cable-Stayed Pedestrian Landscape Overbridge

2019 ◽  
Vol 2 (3) ◽  
pp. 11
Author(s):  
Xinrui Shao
Keyword(s):  
Building Materials ◽  
Process Integration ◽  
Engineering Application ◽  
Construction Process ◽  
Construction Period ◽  
Surrounding Environment ◽  
The People ◽  
Modern Cities ◽  
Safety And Stability ◽  
Reducing Energy

The construction of modern cities emphasizes the nature and harmony among the “people”, “things” and “environment”, reflecting the harmony and unity of the formal beauty, functional beauty and surrounding environment of architecture. Based on the introduction of the design concept of the assembled pedestrian overbridge, through the Jianhua Building Materials Group’s frst “pre-fabricated low-rise tower-stayed pedestrian landscape overbridge” project in China, this paper proposes a solution that can improve the landscape design of the overbridge and reduce the construction complexity of the overbridge, the assembly product supply and the construction process “integration” under the premise of ensuring the safety and stability of the pedestrian overbridge, whose prefabricated production and assembly construction, shortening the construction period, reducing energy consumption, reducing pollution, and obtaining good social comprehensive benefts.

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