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（1 大連理工大學(xué)建設(shè)工程學(xué)部， 大連 116024； 2 中核能源科技有限公司， 北京 100193）
［摘要］基于塑性極限理論，對核電廠鋼筋混凝土墻平面內(nèi)抗剪問題進(jìn)行了研究，給出了平面內(nèi)受剪承載力的下限解和上限解。分析表明，當(dāng)兩個(gè)方向的鋼筋均未屈服時(shí)，墻的平面內(nèi)受剪承載力取決于混凝土的抗壓強(qiáng)度；當(dāng)一個(gè)方向的鋼筋屈服而另一個(gè)方向的鋼筋未屈服時(shí)，墻的平面內(nèi)受剪承載力取決于鋼筋的屈服強(qiáng)度和混凝土的強(qiáng)度；當(dāng)兩個(gè)方向的鋼筋全部屈服時(shí)，墻的平面內(nèi)受剪承載力取決于鋼筋的屈服強(qiáng)度，此時(shí)混凝土的作用只是以壓桿的形式將兩個(gè)方向的鋼筋連在一起并傳遞剪應(yīng)力。對于兩個(gè)方向鋼筋均屈服的情況，下限解與上限解是相同的，因此屬于理論上的精確解。
［關(guān)鍵詞］核電廠； 鋼筋混凝土墻； 平面內(nèi)受剪； 塑性極限分析
中圖分類號：TL48， TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)16-0044-07
Study on in-plane shear of RC walls in nuclear power plant based on the plastic limit theory
Gong Jinxin1, Sun Yunlun2, Zhang Nailong1
(1 Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China; 2 Chinergy Co., Ltd., Beijing 100193, China)
Abstract:A study on in-plane shear of RC walls in nuclear power plant based on the plastic limit theory was done, the lower limit solutions and the upper limit solutions were presented. It is revealed that in the case of the reinforcement neither yielding in two directions, the in-plane shear strength depends on the compressive strength of concrete. When the reinforcement yielding only in one direction, the in-plane shear strength depends on the yielding strength of reinforcement and the compressive strength of concrete. When the reinforcement yielding in two directions, the in-plane shear strength depends on the yielding strength of reinforcement and the concrete only plays a role of transfer of shear by linking the reinforcement. For the last case, the lower limit solutions and the upper limit solutions are coincident, implying an accurate solution in theory is found.
Keywords:nuclear power plant; reinforced concrete(RC) wall; in-plane shear; plastic limit theory
*國家科技重大專項(xiàng)（2014ZX06902011）。
作者簡介：貢金鑫，博士，教授，博士研究生導(dǎo)師，Email:jinxingong@163.com。
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