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Bending Behaviors of HPFRC Sandwich Insulation Hanged Wall Board

Author: YuQun
Tutor: WuXiangGuo
School: Harbin Engineering University
Course: Structural Engineering
Keywords: high performance cementitious composites hanged wall board sandwich structural FEM
CLC: TU551
Type: Master's thesis
Year: 2013
Downloads: 14
Quote: 0
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Abstract

With the increasing depletion of energy，construction industry of the world pay more andmore attention to the energy-efficient buildings, and the energy-efficient buildings isbecoming the focus of research and innovation of the construction industry. Building energyconsumption substantial increased specially since the three decades of economic reforms inchina. The issue of building energy consumption has become an urgent problem in the field ofChinese energy consumption. Brick, concrete block and other high energy consumptionmaterials still occupy market of the wall materials in china. The main insulation measures ishanging or adhering the insulation materials on the surface of the wall made by brick andconcrete block. However, because of the poor performance of traditional insulation materials,low impact strength, poor durability, the thermal insulation properties of the materials willreduce and thermal insulation effect is difficult to achieve the desired requirements whenabidingly exposed the harsh environment.It needs routine maintenance, and cost increase.This traditional form of energy-saving insulation is no longer adapted to the needs of thedevelopment of a conservation-oriented society. Therefore, the wall improvements andbuilding energy efficiency is particularly important. Lightweight composite sandwich panelsystem with its outstanding insulation properties, low cost, simple construction techniquesand installation methods become the development prospects of the most promisingenergy-saving wall. At present, there are many kinds of lightweight composite sandwichpanels and steel wire frame composite sandwich panels have been used in many construction.Existing composite sandwich wall panel are still many deficiencies that need to be adjustedand improved.Based on the existing composite sandwich wall board, we design a new HighPerformance Fiber Reinforced Cementitious Composite (English abbreviation: HPFRC)Sandwich Insulation Hanged Wall Board through improving materials of surface layer and theconnecter between surface layer. HPFRC has excellent mechanical properties and highdurability, it is a new cementitious composite which has a high-strength (compressive strengthis generally between60～80MPa), high toughness, high performance.We use HPFRC asthe structure of the surface layer to enhance the impact resistance and durability of the wallboard surface layer，and use FRP tendons of the lower heat transfer coefficient as the connections of the surface layers to ensure the overall performance of the wallboard and toavoid the emergence of a cold bridge. We do not have to configure reinforced and it is trulyenergy efficient and environmentally friendly.Firstly, the paper test bending performance of3HPFRC Sandwich Insulation HangedWall Board which have the same size and different number of connector. We find destructionlaw of the3HPFRC Sandwich Insulation Hanged Wall Board. We validate the test model byusing ABAQUS finite element calculation software, and the calculated results is in goodagreement with the experimental results.Then we analysis5HPFRC Sandwich InsulationHanged Wall Board which have the same size （4200mm×3300mm）and different conditionsof thickness of the surface layer under the lifting conditions and wind load based on theABAQUS finite element software. We find first crack and ultimate bearing capacity ofHPFRC Sandwich Insulation Hanged Wall Board can effectively improve by increasing thethickness of the inner surface layer under the same node locations and size。

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