新型加筋高透膜材(STFE)力学性能及其在膜结构中的应用  

The Mechanical Properties of the New STFE Membrane Material and Its Application in Membrane Structures

作　　者：张其林[1] 罗晓群[1] 袁野[1] 黄永 Qilin Zhang;Xiaoqun Luo;Ye Yuan;Yong Huang(College of Civil Engineering,Tongji University,Shanghai 200092,China;Serge Ferrari Shanghai Co.,Ltd.,Shanghai 201106,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]森翡瑞(上海)复合材料有限公司,上海201106

出　　处：《钢结构（中英文）》2024年第2期30-42,共13页Steel Construction（Chinese & English）

摘　　要：加筋高透膜材(STFE)是一种新型的高透明度建筑膜材,它具有涂层织物膜材高抗拉强度、高撕裂强度的特点以及聚合物膜材高透明度的特点,适用于需要透明效果的张拉膜结构中。作为一种新式进口膜材,要在国内建筑结构设计中得到应用,首先要依据国内标准对其进行力学性能的检测。根据DG/TJ08–2019—2019《膜结构检测标准》对STFE膜材进行了共6项力学性能测试:抗拉强度与断裂延伸率、撕裂强度、弹性模量与泊松比、剪切模量、徐变延伸率、连接强度。试验测得STFE膜材经向抗拉强度为4241 N/(5 cm),纬向抗拉强度为4335 N/(5 cm);经向撕裂强度为809 N,纬向撕裂强度为873 N;经向弹性模量为1512 kN/m,纬向弹性模量为2352 kN/m;剪切模量为30.5 kN/m;经向徐变延伸率为0.85%,纬向徐变延伸率为0.73%;室温条件下膜片与膜片之间的连接强度可以达到主材的100%。为明确STFE膜材的应用场景,介绍了目前该膜材在国内外一些新建建筑与建筑改造项目中的应用,包括伊斯坦布尔国际机场人行通道、巴黎2024奥运大皇宫临时场馆、伦敦Brent Cross车站过道天幕、伦敦皇家骨科医院休息屋面改造、墨尔本Mpavilion景观亭、佛山博爱湖公园景观遮阳亭。张拉膜结构中,焊接节点是重要的组成部分,介绍了该类膜材在结构中高频焊接的各类节点形式,包括膜–膜焊接连接、膜–索连接、与其他涂层织物膜材的焊接、螺枪夹板等机械连接方式等。通过对STFE膜材力学参数的测定与对膜材在结构中应用与节点做法的简单介绍,为该类膜材在国内的应用和推广提供一定的参考。STFE membrane is a new type of high-transparency building membrane material.This material combines the high tensile strength and tear strength of coated fabric membrane materials with the high transparency of polymer membrane materials,making it suitable for use in tension membrane structures that require a transparent effect.As a new imported membrane material,in order to be used in domestic building structure design,its mechanical properties need to be tested according to domestic standards.According to the“Standard for Inspection of Membrane Structures”(DG/TJ 08-2019-2019),six mechanical properties of STFE membrane were tested:tensile strength and elongation at break,tear strength,elastic modulus and Poisson's ratio,shear modulus,creep elongation,and connection strength.The test results showed that the tensile strength of STFE membrane in the warp direction was 4241 N/(5 cm),and in the weft direction was 4335 N/(5 cm);the tear strength in the warp direction was 809 N,and in the weft direction was 873 N;the elastic modulus in the warp direction was 1512 kN/m,and in the weft direction was 2352 kN/m;the shear modulus was 30.5 kN/m;the creep elongation in the warp direction was 0.85%,and in the weft direction was 0.73%;and the connection strength between membrane pieces at room temperature can reach 100%of the main material.To clarify the application scenarios of STFE membrane materials,this article introduces the current applications of this material in some new building and building renovation projects both domestically and internationally,including metro pedestrian road cover at Istanbul International Airport,temporary venues for Paris 2024 Olympic Games at Grand Palais,canopy walkway at CrossBrent station in London,lounge rooftop renovation at Royal Orthopaedic Hospital in London(Horatio's garden),landscape pavilion at Melbourne Mpavillion,and shading pavilion at Foshan Boai Lake Park.In tensile membrane structures,welding connections are important components.Referring to the STFE membrane material technic

关 键 词：STFE膜材 张拉膜结构 强度测试 力学性能参数 结构应用 节点做法 

分 类 号：TU383[建筑科学—结构工程]