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（北京江河幕墻系統(tǒng)工程有限公司， 北京 101300）

［摘要］大跨度單層索網(wǎng)支撐的點(diǎn)式玻璃幕墻結(jié)構(gòu)剛度小，風(fēng)荷載作用下變形很大，轉(zhuǎn)角索容易形成兩個(gè)方向的大位移。采用轉(zhuǎn)角索設(shè)置橫向彈簧桿，將轉(zhuǎn)角區(qū)數(shù)根拉索連成整體，形成數(shù)根拉索的總剛度的方案，不僅可以減小側(cè)向位移，還可調(diào)整彈簧桿的剛度，使側(cè)向位移由轉(zhuǎn)角索向兩邊均勻過(guò)度。該設(shè)計(jì)既能極大地弱化側(cè)向位移，又能保持索幕墻的視覺(jué)通透性。轉(zhuǎn)角索網(wǎng)幕墻的轉(zhuǎn)角索與相鄰索在正面風(fēng)荷載方向存在較大的位移差，此位移差會(huì)導(dǎo)致玻璃發(fā)生轉(zhuǎn)動(dòng)，將角部分格細(xì)分，來(lái)減小此位移差，并通過(guò)夾具設(shè)計(jì)來(lái)降低玻璃轉(zhuǎn)動(dòng)形成的擠壓；此外，單根索的變形由兩端頭至跨中逐漸增大，導(dǎo)致玻璃四個(gè)角點(diǎn)不共面，發(fā)生翹曲，需對(duì)玻璃面板進(jìn)行最不利工況下的有限元分析，確保玻璃安全。

［關(guān)鍵詞］大跨度； 單層索網(wǎng)； 玻璃幕墻；  彈簧桿

中圖分類(lèi)號(hào)：TU973+.39文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)10-0018-04

Design of corner plan for a large-span monolayer cable net glass curtain wall

Guo Weihua， Liao Jie， Wang Bin

（Jangho Group Co., Ltd., Beijing 101300, China）

Abstract:Large span point-supporting monolayer cable net glass curtain walls have small structure stiffness, the deformation under wind load is big, and the corner cable is easy to form a large displacement in both directions. The use of a corner cable to set the transverse spring rod, several  cables in the corner area are connected into a whole, forming a total stiffness of several cables, not only the lateral displacement can be reduced, but also the stiffness of the spring rod can be adjusted, so that the lateral displacement is evenly excessive from the corner cable to both sides.The design can greatly weaken the lateral displacement and maintain the visual permeability of the curtain wall. There is a large displacement difference between the corner cable and the adjacent cable of the corner cable net glass curtain wall in the direction of the front wind load. This displacement difference will cause the glass to rotate, this displacement difference is reduced by subdividing the angular portion and the extrusion formed by the rotation of the glass is reduced by the fixture design. In addition, the deformation of the single cable gradually increases from the head to the middle of the span, resulting in the four corners of the glass being non-coplanar and warping. The finite element analysis of the glass panel under the most unfavorable conditions is required to ensure the safety of the glass.

Keywords:large-span; monolayer cable net; glass curtain; spring rod