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建筑结构学报 2006年第5期27卷 9-15页

作者：张铮张其林同济大学土木工程学院上海200092

以长细比和荷载偏心率为主要参数,测试了13个H形截面铝合金挤压型材偏心受压试件的稳定承载力,所有试件均在受弯平面内发生了整体弯曲屈曲。采用数值方法对上述试件进行了非线性稳定性计算,计算结果得到了试验结果的验证。对铝合金压弯... 详细信息

以长细比和荷载偏心率为主要参数,测试了13个H形截面铝合金挤压型材偏心受压试件的稳定承载力,所有试件均在受弯平面内发生了整体弯曲屈曲。采用数值方法对上述试件进行了非线性稳定性计算,计算结果得到了试验结果的验证。对铝合金压弯构件的稳定性进行了理论分析,结果表明合金类型对稳定承载力的影响最大,修正系数η1需要对弱硬化合金和强硬化合金分别取值。推导的计算H形截面铝合金压弯构件平面内稳定承载力的线性相关公式与数值计算结果吻合较好,并在形式上与我国《钢结构设计规范》(GB 50017—2003)保持一致以便于实际应用。

关键词：铝合金压弯构件 H形截面平面内稳定承载力相关公式

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基于离子色谱法的中水淡化海砂工艺研究

混凝土与水泥制品 2024年第9期 96-99,105页

作者：高攀峰刘帅豪张健奕戴源王利勇龙绛雪傅海燕张祺霖厦门理工学院环境科学与工程学院福建厦门361024

建立了一种采用离子色谱法分析海砂中阴离子的检测方法,验证了该方法的准确度,在此基础上,采用L9(33)正交试验研究了砂水比、洗涤时间、洗涤次数对海砂中Cl-去除率的影响,并进行了成本效益分析。结果表明:采用离子色谱法可快速分离和检... 详细信息

建立了一种采用离子色谱法分析海砂中阴离子的检测方法,验证了该方法的准确度,在此基础上,采用L9(33)正交试验研究了砂水比、洗涤时间、洗涤次数对海砂中Cl-去除率的影响,并进行了成本效益分析。结果表明:采用离子色谱法可快速分离和检测出海砂中的F^(-)、Cl^(-)、Br^(-)、NO^(3-)、SO_(4)^(2-)、I^(-),且准确度较高,相关系数R^(2)均大于0.9970;当砂水比为1∶20、洗涤时间为10 min、洗涤次数为3次时,对海砂的淡化效果最好,Cl^(-)去除率可达99.8%;采用中水淡化海砂具有显著的环境效益。

关键词：建设用砂海砂淡化 Cl^(-)去除率中水回用离子色谱法

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Cement-inspired readily fabricated water-strengthened polymeric materials

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Science China Chemistry 2024年第10期67卷 3458-3467页

作者： Han Zuo Luzhi zhang Huixia Xuan Shijia Gu Xinxin Xu Rasoul Esmaeely Neisiany qilin Wu Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Key Laboratory of Lightweight CompositeShanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620China Zhejiang Hexin Science and Technology Co. Ltd.Jiaxing 314033China Biotechnology Centre Silesian University of TechnologyKrzywoustego 844-100 GliwicePoland Department of Polymer Engineering Hakim Sabzevari UniversitySabzevar ***Iran

Polymeric materials have penetrated all aspects of society and play an irreplaceable ***,there is an inherent contradiction between their mechanical properties and processing ***,inspired by cement,a crucial construction material renowned for its excellent fabricating behavior and self-strengthening properties,we have developed dynamic crosslinked poly(oxime-urethane)(CPOU).The synthesized CPOU showed good self-healing ability and 3D printability owing to the dynamic dissociation and re-association of oxime-carbamate *** objects printed through the fused deposition modeling technique were able to be readily assembled into complex architectures through intrinsic ***,the self-strengthening of CPOU was successfully realized through multiple-step tandem *** dissociation of dynamic oxime-carbamate bonds produced–NCO groups,which reacted with the surrounding water to form polar urea bonds in the polymer network,leading to an increase in the tensile strength of CPOU from 11.95 to 19.37 *** work not only develops the polymers with combined self-healing,facile fabricating,and self-strengthening properties but also provides a new molecular strategy to modulate the properties of polymers,which could be potentially applied in diverse areas.

关键词： dynamic bonds 3D printing self-strengthening self-healing

A Review of Atmospheric Electricity Research in China from 2019 to 2022

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Advances in Atmospheric Sciences 2023年第8期40卷 1457-1484页

作者： Weitao LYU Dong ZHENG Yang zhang Wen YAO Rubin JIANG Shanfeng YUAN Dongxia LIU Fanchao LYU Baoyou ZHU Gaopeng LU qilin zhang Yongbo TAN Xuejuan WANG Yakun LIU Shaodong CHEN Lyuwen CHEN Qingyong LI Yijun zhang State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Laboratory of Lightning Physics and Protection Engineering Chinese Academy of Meteorological SciencesBeijing 100081China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210041China Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science&TechnologyNanjing 210044China Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200030China Institute of Tropical and Marine Meteorology China Meteorological AdministrationGuangzhou 510641China Beijing Key Lab of Transportation Data Analysis and Mining Beijing Jiaotong UniversityBeijing 100044China Department of Atmospheric and Oceanic Sciences and Institute of Atmospheric Sciences Fudan UniversityShanghai 200438China

Atmospheric electricity is composed of a series of electric phenomena in the *** advances in atmospheric electricity research conducted in China have been achieved in recent *** this paper,the research progress on atmospheric electricity achieved in China during 2019-22 is reviewed focusing on the following aspects:(1)lightning detection and location techniques,(2)thunderstorm electricity,(3)lightning forecasting methods and techniques,(4)physical processes of lightning discharge,(5)high energy emissions and effects of thunderstorms on the upper atmosphere,and(6)the effect of aerosol on lightning.

关键词： atmospheric electricity thunderstorm lightning lightning detection lightning physics

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铝合金工字形截面的抗剪承载力研究

土木工程学报 2007年第3期40卷 18-23页

作者：董震张其林同济大学上海200092

提出了考虑腹板屈曲后强度和翼缘约束效应的铝合金工字形截面的抗剪设计方法,并给出实用的建议设计公式。采用有限元方法模拟铝合金工字形截面的受力变形,并对已有工字形截面的抗剪承载力计算理论进行分析。有限元方法得出的荷载-位移... 详细信息

提出了考虑腹板屈曲后强度和翼缘约束效应的铝合金工字形截面的抗剪设计方法,并给出实用的建议设计公式。采用有限元方法模拟铝合金工字形截面的受力变形,并对已有工字形截面的抗剪承载力计算理论进行分析。有限元方法得出的荷载-位移曲线反映出铝合金工字形截面腹板弹性剪切屈曲力相当低,而构件整体抗剪承载力却相对较高,传统钢构件的设计方法不能准确反映其实际抗剪能力。在此基础上指出对于铝合金材料制成的工字形截面,抗剪设计公式应准确、方便的计算腹板受剪屈曲后承载力和翼缘对截面抗剪承载力的贡献。经数据比对,建议设计公式的计算结果和Hamoodi M J、Burt C A和Evans H R的试验资料及现行的欧洲铝合金规范公式计算结果吻合,且公式计算简捷。

关键词：铝合金工字形截面抗剪承载力有限元分析设计研究

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基于可靠度的单层网壳稳定设计方法

建筑结构学报 2006年第6期27卷 108-113页

作者：卢家森张其林同济大学土木工程学院

基于可靠度的钢结构稳定设计理论,提出了通过抗力分项系数验算网壳结构稳定性的方法。在确定分项系数时,分别考虑了材料、几何初始缺陷和计算模式的不确定性,使用基于响应面函数的蒙特卡罗模拟方法对结构进行二阶弹塑性分析。首先对两... 详细信息

基于可靠度的钢结构稳定设计理论,提出了通过抗力分项系数验算网壳结构稳定性的方法。在确定分项系数时,分别考虑了材料、几何初始缺陷和计算模式的不确定性,使用基于响应面函数的蒙特卡罗模拟方法对结构进行二阶弹塑性分析。首先对两个网壳试验模型的试验结果做了数值分析对比,验证了本文有限元模型的有效性。然后选择应用最广的K8作为重点对象,使用基于响应面函数的蒙特卡罗模拟方法对结构进行考虑初始缺陷的二阶弹塑性分析,得出了抗力分项系数。

关键词：单层网壳可靠度稳定设计初始缺陷二阶弹塑性分析

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带旋转自由度的四边形平板壳单元

同济大学学报（自然科学版） 2009年第2期37卷 164-168,196页

作者：康澜张其林同济大学土木工程学院上海200092

基于Kirchhoff假设,运用广义协调技术,将线位移和转角位移相互独立的位移场引入面内旋转自由度,构造出任意四边形4节点24自由度的平板壳单元;运用U.L.列式,建立了该单元的切线刚度矩阵.算例表明,该单元在板壳结构几何非线性分析中具有... 详细信息

基于Kirchhoff假设,运用广义协调技术,将线位移和转角位移相互独立的位移场引入面内旋转自由度,构造出任意四边形4节点24自由度的平板壳单元;运用U.L.列式,建立了该单元的切线刚度矩阵.算例表明,该单元在板壳结构几何非线性分析中具有良好的精度,且能很好地解决梁单元和板壳单元的连接过渡问题.

关键词：平板壳单元旋转自由度广义协调几何非线性

Realizing efficient emission and triple-mode photoluminescence switching in air-stable tin(IV)-based metal halides via antimony doping and rational structural modulation

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Aggregate 2024年第1期5卷 257-269页

作者： Xuefei He Hui Peng qilin Wei Zhijie Zhou Guolun zhang Zhentao Du Jialong Zhao Bingsuo Zou Department of Materials Physics and Chemistry State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresMOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materialsand School of ResourcesEnvironment and MaterialsGuangxi UniversityNanningChina

Recently,many lead-free metal halides with diverse structures and highly efficient emission have been ***,their poor stability and single-mode emission color severely limit their ***,three homologous Sb^(3+)-doped zero-dimensional(0D)air-stable Sn(IV)-based metal halides with different crystal structures were developed by inserting a single organic ligand into SnCl_(4)lattice,which brings different optical *** photoexcitation,(C_(25)H_(22)P)SnC_(l5)@Sb⋅CH_(4O)(Sb^(3+)−1)does not emit light,(C_(25)H_(22)P)_(2)SnC_(l6)@Sb-α(Sb^(3+)−2α)shines bright yellow emission with a photoluminescence quantum yield(PLQY)of 92%,and(C_(25)H_(22)P)_(2)SnC_(l6)@Sb-β(Sb^(3+)−2β)exhibits intense red emission with a PLQY of 78%.The above three compounds show quite different optical properties should be due to their different crystal structures and the lattice ***,Sb^(3+)−1 can be successfully converted into Sb^(3+)−2αunder the treatment of C_(25)H_(22)PCl solution,accompanied by a transition from nonemission to efficient yellow emission,serving as a“turn-on”photoluminescence(PL)***,a reversible structure conversion between Sb^(3+)−2αand Sb^(3+)−2βwas witnessed after dichloromethane or volatilization treatment,accompanied by yellow and red emission ***,a triple-mode tunable PL switching of off-onI-onII can be constructed in Sb^(3+)-doped Sn(IV)-based ***,we demonstrated the as-synthesized compounds in fluorescent anticounterfeiting,information encryption,and optical logic gates.

关键词： information encryption Sb^(3+)-doping Sn(IV)-based metal halides structural modulation triple-mode

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纵向焊接铝合金柱设计方法研究

土木工程学报 2007年第4期40卷 21-26页

作者：吴芸张其林同济大学上海200092

大多数结构用铝合金通常要经过热处理或加工硬化以得到比退火状态更高的力学性能。这种合金焊接后,焊接热会使焊缝附近局部区域(称为热影响区HAZ)强度降低。而对于钢结构,由于其热导率比铝材小得多,因此只有高强钢才可能产生强度降低的... 详细信息

大多数结构用铝合金通常要经过热处理或加工硬化以得到比退火状态更高的力学性能。这种合金焊接后,焊接热会使焊缝附近局部区域(称为热影响区HAZ)强度降低。而对于钢结构,由于其热导率比铝材小得多,因此只有高强钢才可能产生强度降低的热影响区,而且其强度的降低没有铝合金显著,热影响区宽度也比铝合金小得多。这将使焊接铝合金柱的设计变得更为复杂。由于我国目前还没有关于铝合金结构的设计规范,为此本文通过试验研究及对已有试验数据的分析,并参考国外规范,提出了纵向焊接铝合金柱设计方法的建议,并将计算结果与试验结果进行比较,两者吻合较好,从而验证了建议设计公式的适用性。

关键词：铝合金纵向焊接热影响区折算强度区柱设计