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一种环形张拉整体结构找形与应用
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作者 尚仁杰 戈建 李明澔 《应用力学学报》 CAS CSCD 北大核心 2020年第6期2598-2604,I0019,I0020,共9页
提出了一种由多个4压杆、12拉杆单元环向均匀布置构成的环形张拉整体结构,并对其拓扑结构和找形方法进行了研究。找形分三步:先根据建筑要求建立环形张拉整体结构初始构形;再对初始构形的拉杆逐级施加初应变,进行几何非线性分析;根据位... 提出了一种由多个4压杆、12拉杆单元环向均匀布置构成的环形张拉整体结构,并对其拓扑结构和找形方法进行了研究。找形分三步:先根据建筑要求建立环形张拉整体结构初始构形;再对初始构形的拉杆逐级施加初应变,进行几何非线性分析;根据位移-初应变曲线和拉力-初应变曲线折点位置确定张拉整体结构自平衡构形,完成结构找形。在初应变不足0.2%的前提下,结构达到内力自平衡状态,实现结构找形,并得到自平衡内力。本文提出的环形张拉整体结构找形过程直观、可控,收敛速度快。2019北京世界园艺博览会比利时馆采用了该环形张拉整体结构,本文以此工程为例,介绍了环形张拉整体结构的找形过程,分析了自平衡构形内力和结构自重下的内力与变形。 展开更多
关键词 环形张拉整体结构 找形 初始构形 自平衡构形
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Residential environmental evaluation of local cities considering regional characteristic and personal residential preference—a case study of Saga City,Japan 被引量:6
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作者 gejian HOKAOKazunori 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第1期138-144,共7页
Questionnaire surveys and subjective evaluations on residential environment were performed in order to grasp the main factors of residential environment of small local cities. The suitable evaluation index system was ... Questionnaire surveys and subjective evaluations on residential environment were performed in order to grasp the main factors of residential environment of small local cities. The suitable evaluation index system was established, and the regional residential environment characteristics and personal residential preference types were analyzed, so that their influence on residential environment evaluation could be grasped. The results can be applied to the residential environment planning, construction and monitoring of local cities. 展开更多
关键词 residential environment evaluation local city regional characteristics personal residential preference
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New Management of Malignant Glaucoma by Phacoemulsification with Posterior Chamber Foldable Intraocular Lens Implantation 被引量:2
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作者 gejian GuoY 《眼科学报》 1999年第3期162-168,共7页
Objective:To investigate the feasibility of phacoemulsification with posterior chamber foldable intraocular lens implantation in the management of malignant glaucoma. Patients and Methods:Fourteen patients with malign... Objective:To investigate the feasibility of phacoemulsification with posterior chamber foldable intraocular lens implantation in the management of malignant glaucoma. Patients and Methods:Fourteen patients with malignant glaucoma diagnosed in the Department of Glaucoma were enrolled in the study.12 patients developed malignant glaucoma after filtration surgery.1 developed after peripheral iridectomy.1 patient developed malignant glaucoma without any clear cause.Cataract phacoemulsification was performed.Posterior chamber intraocular foldable lens was implanted in 10 cases of patients.Results:All 14 patients were cured wiht normal intraocular pressure,normal anterior chamber depth and increased visual acuity.Conclusion:Phacoemulsification with posterior chamber foldable intraocular lens implantation is a good alternative in treating malignant glaucoma. 展开更多
关键词 恶性青光眼 晶状体乳化 人工晶体植入 后房
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