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（1 清華大學(xué)建筑設(shè)計(jì)研究院有限公司， 北京  100084； 2 清華大學(xué)土木工程系， 北京 100084）

［摘要］紅飄帶景觀工程由于特殊原因，不能進(jìn)行巖土工程勘察。以紅飄帶景觀工程為例，在地基條件不明確的情況下，通過建立可靠的設(shè)計(jì)分析方法，保證結(jié)構(gòu)達(dá)到所要求的可靠度。上部結(jié)構(gòu)計(jì)算分析時(shí)，在支座條件設(shè)定上，恰當(dāng)?shù)伢w現(xiàn)地基剛度的不同，提高上部結(jié)構(gòu)構(gòu)件內(nèi)力計(jì)算結(jié)果的準(zhǔn)確度。按照工程結(jié)構(gòu)可靠度理論，控制不同條件下的構(gòu)件內(nèi)力，使得結(jié)構(gòu)總體可靠度基本一致。

［關(guān)鍵詞］地基剛度； 支座條件； 構(gòu)件內(nèi)力； 可靠度

中圖分類號(hào)：TU398-7文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)12-0129-05

Difficulty analysis of the Red Ribbon on the Tiananmen Square under unclear foundation condition

ZHANG Yizhou1, WANG Lan1, LIU Yansheng1, CHEN Jingwei1, SHI Yongjiu2, CHEN Hong1

(1 Architectural Design & Research Institute of Tsinghua University Co., Ltd., Beijing 100084, China;2 Department of Civil Engineering, Tsinghua University, Beijing 100084, China)

Abstract:The geotechnical engineering survey of the Red Ribbon could not be carried out because of special reasons. Based on this example, a reliable design analysis method was established to ensure that the structure met the required reliability with unclear foundation conditions. In the calculation and analysis of the superstructure, the stiffness of the foundation was properly reflected in the setting of the support conditions, and the accuracy of the calculation results of the internal force of the superstructure members was improved. According to the reliability theory of engineering structure, the internal force of the components under different conditions was controlled, so that the overall reliability of the structure was basically the same.

Keywords:foundation stiffness; support condition; internal force of structural member; reliability

作者簡介：張一舟，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:22373836@qq.com。