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（1 南通大學(xué)建筑工程學(xué)院， 南通 226019；

 2 南京工業(yè)大學(xué)先進(jìn)工程復(fù)合材料研究中心， 南京 211816）

［摘要］回顧了泡桐木復(fù)合夾芯板面內(nèi)軸向承載能力試驗(yàn)，提出了面內(nèi)軸向荷載作用下泡桐木復(fù)合夾芯板承載能力參考限值；針對(duì)既有承載力計(jì)算方法的不足，運(yùn)用經(jīng)典夾層結(jié)構(gòu)復(fù)合材料理論，討論了夾芯板的穩(wěn)定性及參數(shù)變化對(duì)其的影響，給出了面內(nèi)軸向荷載作用下輕質(zhì)泡桐木復(fù)合夾芯板承載能力的計(jì)算方法，闡述了泡桐木復(fù)合夾芯板的破壞機(jī)理。分析表明，取基于彎曲和剪切共同作用的彈性屈曲荷載作為泡桐木復(fù)合夾芯板軸向承載能力的限值是比較合適的；芯材拼縫的設(shè)計(jì)、施工工藝是該夾層結(jié)構(gòu)發(fā)揮承載能力的關(guān)鍵因素；與傳統(tǒng)的墻板或墻體比較，泡桐木復(fù)合夾芯板具有顯著的質(zhì)輕而承載力高的特點(diǎn)。

［關(guān)鍵詞］夾層結(jié)構(gòu)； 面內(nèi)屈曲； 泡桐木； 建筑墻板； 承載能力

中圖分類(lèi)號(hào)：TB332， TU599文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)02-0084-06

Load carrying capacity analysis of paulownia core sandwich board under in-plane axial load

Hong Junqing1, Liu Weiqing2, Fang Hai2, Bao Xiangyu2, Zhang Shaofeng1

(1 School of Architectural Engineering, Nantong University, Nantong 226019, China;2 Advanced Engineering Composites Research Center, Nanjing Tech University, Nanjing 211816, China)

Abstract:Based on the experiments of axial  load carrying capacity of paulownia core sandwich board (PCSB) under in-plane axial load, the referenced  limit value of load carrying capacity was presented. Due to the deficiency of the existing calculating method, laminated plate theory was utilized to discuss the stability and the influences of the variation of parameters. The new calculating method of load carrying capacity of light PCSB under in\|plane axial  load was proposed, and the failure mechanism on PCSB was expounded. Analysis shows that it is suitable to determine the elastic buckling load under the joint action of bending and shearing as the axial load carrying capacity of PCSB. The design and construction technologies are the key factors to exert load carrying capacity of the sandwich structure. Compared with partial traditional wallboards and materials, PCSB features characteristics of lightness and high load carrying capacity.

Keywords:sandwich structure; in-plane compression buckling; paulownia; construction wallboard; load carrying capacity

*國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(51238003)，住建部科技項(xiàng)目(2011-k5-7)，鎮(zhèn)江市社會(huì)發(fā)展項(xiàng)目(SH2013011)。

作者簡(jiǎn)介：洪俊青，博士，副教授，Email: hong2002912@163.com。