Discussion on the Construction Technology of External Wall Panel in Prefabricated Building Structure

2021 ◽  
Keyword(s):  
Construction Technology ◽  
Building Structure ◽  
Wall Panel ◽  
External Wall ◽  
Prefabricated Building

scholarly journals Application of Laminated Plate Construction Technology in Prefabricated Building Structure

CONVERTER ◽  
2021 ◽  
pp. 30-36
Author(s):  
Li Jianghua, Weng Mei
Keyword(s):  
Prestressed Concrete ◽  
Engineering Practice ◽  
Construction Technology ◽  
Building Structure ◽  
Laminated Plate ◽  
Composite Slab ◽  
Advantages And Disadvantages ◽  
Budget Analysis ◽  
Material Budget ◽  
Prefabricated Building

With the development of China's construction field, prefabricated building structure has gradually become a very common building structure in the current construction engineering by virtue of its many advantages in the actual construction field. Combined with the engineering practice, this paper summarizes the hoisting technology of precast composite slab and precast staircase in prefabricated building structure. This paper focuses on the optimization design of laminated plate support under the conditions of wood formwork and aluminum formwork system and the key and difficult points in the construction process, and puts forward a set of practical and feasible construction methods for prefabricated components. This paper focuses on the analysis of the design concept, materials, structural form, manufacturing technology, hoisting and installation, and construction technology of M-type light steel concrete composite slab. This paper discusses and summarizes the advantages and disadvantages of M-type light steel reinforced concrete composite slab at present, and analyzes its development and application prospects. At the same time, in order to determine the reasonable type of laminated plate, the material budget analysis of assembled laminated plates with different structural forms is carried out. The conclusions are as follows: PK prestressed concrete composite slab has great advantages in the whole material budget cost, which is suitable for all kinds of span buildings. One way steel truss slab and YH prestressed concrete composite slab are suitable for small span buildings.

Formation Design of Sandwich External Wall Panel in Cold Climate Area Made of Paper Honeycomb Board

2012 ◽  
Vol 174-177 ◽  
pp. 1533-1536
Author(s):  
Hai Rong Yang ◽  
Yan Yuan
Keyword(s):  
Internal Surface ◽  
Cold Climate ◽  
Transmission Factor ◽  
Thermal Calculation ◽  
Wall Panel ◽  
Insulating Layer ◽  
External Wall ◽  
Thermal Insulating ◽  
Paper Honeycomb ◽  
Formation Design

The sandwich external wall panel is made of fireproof Paper Honeycomb Board (PHB) as kernel material, and the external surface is covered by colorful extruded steel board, while the internal surface is coated with the thermal insulating frothing ceramic board or the calcium silicate board, which works as the insulating layer or protecting layer of the panel. Two types of formation design are suggested, i.e., Type-A and Type-B. After corresponding thermal calculation, the maximum thermal transmission factor is determined as 0.424W/(m2• K), which complies with the threshold stipulated in the National Code for external wall panel used in cold climate area. The newly designed wall panel will save 65% of energy when compared with the traditional one made in 1980.

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.

scholarly journals Thermal Behavior and Measures to Prevent Condensation of a Newly Developed External Wall Panel

2019 ◽  
Vol 11 (3) ◽  
pp. 912 ◽  
Author(s):  
Goopyo Hong ◽  
Suk-Won Lee ◽  
Ji-Yeon Kang ◽  
Hyung-Geun Kim
Keyword(s):  
Surface Temperature ◽  
Thermal Performance ◽  
Simulation Analysis ◽  
Thermal Characteristics ◽  
Weather Conditions ◽  
Building Envelope ◽  
Unsteady State ◽  
Wall Panel ◽  
External Wall ◽  
Thermal Transmittance

An external wall panel (EWP) as a novel alternative to provide spatial flexibility and improve the performance of external walls was developed. The purpose of this study was to analyze the thermal performance of this EWP. A simulation analysis was carried out to scrutinize whether it was vulnerable to condensation, considering South Korea’s weather conditions, and find countermeasures to prevent this. Results indicated that the indoor surface temperature with the measures of added insulation materials and an inserted thermal-breaker was over 16.5 °C and that these methods could prevent condensation. In addition, this study assessed unsteady-state thermal characteristics, linear thermal transmittance, and the effective thermal transmittance of EWP. Effective thermal transmittance was estimated in consideration of the heat transmittance of EWP and the linear thermal transmittance of its slabs and its connection parts. The thermal characteristics of the building envelope are needed to analyze effective thermal transmittance and linear thermal transmittance-associated thermal bridges.

scholarly journals Diagnostics of the structural failure of sports hall external wall layers

2019 ◽  
Vol 284 ◽  
pp. 02005
Author(s):  
Leopold Kruszka ◽  
Pawel Muzolf
Keyword(s):  
Technical Condition ◽  
The Other ◽  
Diagnostic Process ◽  
Construction Technology ◽  
Structural Failure ◽  
External Wall ◽  
Aerated Concrete ◽  
Structural Failures ◽  
Construction Defects

The paper presents the diagnostics of the technical condition of the external layers of the sports hall walls. Structural failures related to construction defects themselves constitute a relatively small percentage (4.1% in 2017, 5.05% in 2014-2017 [1]), although the main reason for them is the lack of maintaining technological rigors (76.9% in 2017, 68.4% in 2014-2017 [1]). The presented and described case study of the technical condition of the newly built sports hall does not refer to structural failure, but to the reduction of the risk of that failure as a result of non-compliance with construction technology, in particular, in relation to the external walls. Contrary to the design, the walls of the sports hall were made of aerated concrete. According to the declaration of a designer, the contractor neither consulted the changes with the designer nor gain the acceptance of the designer for using aerated concrete instead of the primary proposed and designed brick structure. In addition, aerated concrete curtain walls with a height of about 4.5 m were made without any wall connectors. This resulted in a risk of a structure failure involving the collapse of its curtain walls. The technological requirements for the repairing of the elements of supporting walls as well as the diagnostic process of the other damaged finishing cladding of external walls are also provided in this paper.

scholarly journals Simulation application of ALC external wall panel on rigid column frame brace system

2021 ◽  
Vol 260 ◽  
pp. 03022
Author(s):  
Xiujuan Lv ◽  
Wuxin Chen ◽  
Xuguang Li
Keyword(s):  
Energy Consumption ◽  
Support System ◽  
Mechanical Performance ◽  
Hanging Wall ◽  
Engineering Application ◽  
Wall Panel ◽  
Displacement Ductility ◽  
External Wall ◽  
Under Construction ◽  
Light Material

Taking a building under construction as an example, based on ABAQUS software, studies the failure mode, hysteretic curve, displacement ductility and energy consumption capacity of ALC external wall panel under three working conditions of assembled stiffened column frame brace system, assembled frame system and cast-in-place frame system.The simulation results show that:1.Under the action of low cycle load, the assembled stiffened column frame support system has no damage,the maximum stress value is 6.98 MPa, which is located at the position of steel plate at the column bottom; 2.Under the condition of ALC hanging wall plate, the structure ductility is better; 3.Part of the energy consumption is borne by the light material hanging wall plate, and the stiffened column frame support system has higher energy consumption capacity.The assembled ALC external wall panel based on the rigid column frame support system has better mechanical performance, can significantly improve the energy consumption capacity of the overall structure, and has high construction feasibility,economy and engineering application value.

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