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[提要]  合肥CBD中央廣場(chǎng)工程為一大底盤多塔樓建筑，若按常規(guī)方法施工，則必須按《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)
范》要求預(yù)留伸縮縫。但伸縮縫的留設(shè)會(huì)影響建筑物的使用功能。根據(jù)計(jì)算分析結(jié)果，在采取多項(xiàng)技術(shù)措施的前提下，取消了伸縮縫，解決了建筑功能和結(jié)構(gòu)設(shè)計(jì)上的矛盾。
[關(guān)鍵詞]  溫度應(yīng)力  收縮  預(yù)應(yīng)力  大面積混凝土  基礎(chǔ)  后澆帶

The central plaza in Hefei CBD have 5 towers on the podium. The longitudinal and cross length of the podium is about 119.5m and 81.lm respectively. With the common construction method, the expansion joint should be preformed according to the concrete design code.  The existance of the expansion joint cannot satisfy operating requirement. Several technical measures, in response to the results of the analysis, are introduced to eliminate the expansion joint and the discrepancy between the usage and design code.
Keywords:  temperature stress; shrinkage; prestressed;  large acreage concrete; foundation; expansion joint

      參  考  文  獻(xiàn)
1．林寶新．合肥CBD中央廣場(chǎng)的整體分析．建筑結(jié)構(gòu)，2004，34(8)．
2．王鐵夢(mèng)．上程結(jié)構(gòu)裂縫控制中國(guó)建筑工業(yè)出版社，1999
3．韓重慶．大面積預(yù)應(yīng)力混凝土梁板結(jié)構(gòu)不設(shè)溫度縫研究．博士學(xué)位論文，東南大學(xué)，2001．