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（1 同濟(jì)大學(xué)預(yù)應(yīng)力研究所， 上海 200092； 2 同濟(jì)大學(xué)先進(jìn)土木工程材料教育部重點(diǎn)實(shí)驗(yàn)室，上海 200092；  3 中國海誠工程科技股份有限公司， 上海 200031； 4 上海同吉建筑工程設(shè)計(jì)有限公司， 上海 200092；5 上海建筑設(shè)計(jì)研究院有限公司， 上海 200041）

［摘要］基于《預(yù)應(yīng)力混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》（JGJ 369—2016）的編制、《預(yù)應(yīng)力混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)程》（DGJ 08-69—2015）的修訂及相關(guān)的前期研究，主要針對(duì)超長(zhǎng)混凝土結(jié)構(gòu)與預(yù)應(yīng)力設(shè)計(jì)的一些重要方面進(jìn)行介紹探討：提出廣義超長(zhǎng)結(jié)構(gòu)的概念，使超長(zhǎng)混凝土結(jié)構(gòu)及相關(guān)預(yù)應(yīng)力設(shè)計(jì)更科學(xué)合理；超長(zhǎng)混凝土結(jié)構(gòu)中約束及其對(duì)預(yù)應(yīng)力效應(yīng)的影響，在超長(zhǎng)混凝土結(jié)構(gòu)及相關(guān)預(yù)應(yīng)力設(shè)計(jì)中需合理考慮結(jié)構(gòu)約束；超長(zhǎng)混凝土結(jié)構(gòu)施工過程的時(shí)間效應(yīng)與路徑效應(yīng)及其影響；總結(jié)提出超長(zhǎng)混凝土結(jié)構(gòu)裂縫控制的“防”原則并將之與現(xiàn)已廣泛提及的“抗”、“放”原則一起作為裂縫控制的原則，在實(shí)踐應(yīng)用中可將“抗”、“放”、“防”原則有機(jī)結(jié)合而采取綜合的裂縫控制措施。

［關(guān)鍵詞］超長(zhǎng)混凝土結(jié)構(gòu)； 預(yù)應(yīng)力； 裂縫控制； 設(shè)計(jì)

中圖分類號(hào)：TU378-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)08-0005-04

Prestress design of super-long concrete structure

Xiong Xueyu1,2, Xiang Ruibin1,3, Wang Jishu4， Li Yaming5

(1 Institute of Prestressed Structures, Tongji University, Shanghai 200092, China; 2 Key Laboratory of Advanced Civil Engineering Materials(Tongji University), Ministry of Education, Shanghai 200092, China;  3 China Haisum Engineering Co.,  Ltd.,  Shanghai 200031, China; 4 Shanghai Tongji Building Engineering Design Co.,  Ltd., Shanghai 200092, China；5 Shanghai Architectural Design and Research Co., Ltd.， Ｓｈａｎｇｈａｉ ２０００41， Ｃｈｉｎａ)

Abstract:Based on the compilation of the Code for design of prestressed concrete (JGJ 369—2016), revise of the Design code for prestressed concrete structures (DGJ 08-69—2015) and related previous studies, some important aspects of super-long concrete structure and prestress design were introduced. The concept of generalized super-long structure was proposed to make the design of super-long concrete structure and related prestress design more scientific and reasonable. Considering effects of constraints in super-long concrete structure on prestress effect, structural constraints were needed to be taken into account reasonably in the design of super-long concrete structures and related prestress design. The time effects and path effects of the super-long concrete structure in the construction process should be considered. The principle of “prevention” was put forward to control cracks in superlong concrete structure and this principle was combined with the widely-mentioned principles of “resistance” and “release” to become the principle of crack control,  in practice, principles of “resistance”, “release” and “prevention” can be organically combined to take comprehensive crack control measures.

Keywords:super-long concrete structure; prestress; crack control; design

作者簡(jiǎn)介：熊學(xué)玉，博士，教授，博士生導(dǎo)師，Email：xueyu@#edu.cn。