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（1 銅陵市建筑工程施工圖設(shè)計(jì)文件審查有限公司， 銅陵 244000; 2 銅陵市建設(shè)工程質(zhì)量監(jiān)督監(jiān)測(cè)有限公司， 銅陵 244000）

［摘要］由于國(guó)家規(guī)范、規(guī)程和有關(guān)手冊(cè)對(duì)收縮后澆帶和沉降后澆帶的設(shè)置、構(gòu)造、配筋和沉降計(jì)算無(wú)統(tǒng)一規(guī)定，對(duì)于有些內(nèi)容，不同規(guī)范的規(guī)定要求又不一樣，甚至互相矛盾，致使在設(shè)計(jì)中使用比較混亂、關(guān)鍵問(wèn)題交代不清，設(shè)計(jì)存在安全隱患。通過(guò)對(duì)收縮后澆帶和沉降后澆帶的深入探討，較全面地回答了如下關(guān)鍵問(wèn)題：后澆帶的設(shè)置要求及相關(guān)構(gòu)造；后澆帶澆筑時(shí)間；結(jié)構(gòu)長(zhǎng)度超規(guī)范時(shí)是否必須設(shè)收縮后澆帶；高層和裙房之間是否必須設(shè)沉降后澆帶；設(shè)沉降后澆帶如何控制沉降差、基礎(chǔ)和上部結(jié)構(gòu)內(nèi)力如何計(jì)算等。

［關(guān)鍵詞］收縮后澆帶； 沉降后澆帶； 斷開(kāi)模型； 整體模型； 補(bǔ)償收縮混凝土； 膨脹劑； 后期沉降差； 附加內(nèi)力

中圖分類(lèi)號(hào)：TU318， TU755文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)03-0038-08

Deep investigation on post-cast strip setting

Li Guosheng1,2

(1 Tongling Construction Engineering Drawing Design Review Co., Ltd., Tongling 244000, China;2 Tongling Construction Engineering Quality Supervision and Monitoring Co.,Ltd., Tongling 244000, China)

Abstract:There is no uniform regulation for the setting, construction, reinforcement and settlement calculation of shrinkage post-cast strip and settlement post-cast strip in national codes, regulations and relative manuals. For some content, the requirements of different codes are different, or even contradictory. As a result, these codes would not been  very clearly understood by many designers and are used in disorder in design; the key problems are not clear in design as well, resulting in potential safety hazard in later design. Through the deep investigation of the shrinkage post-cast strip and settlement post-cast strip, some key questions were answered in a relatively comprehensive way, such as  setting requirements and related construction of post-cast strip;  the casting time of post-cast strip; whether must shrinkage post-cast strip be designed when structural length exceeds the code; whether must settlement post-cast strip be designed between high-rise buildings and podiums; how to control differential settlement  and how to calculate the internal force of foundation and superstructure for the settlement post-cast strip designed  etc.

Keywords:shrinkage post-cast strip; settlement post-cast strip; disconnected model; integral model; expansive shinkage concrete; expanding agent; later differential settlement; additional internal force

作者簡(jiǎn)介：李國(guó)勝，學(xué)士，高級(jí)工程師，Email:693950802@qq.com。