Results 41 to 50 of about 522 (93)

基于连续强度法的不锈钢梁抗剪切性能研究

Jianzhu Gangjiegou Jinzhan
不锈钢结构因具有良好的耐腐蚀性、容易维护等优点，逐渐成为工程建设领域中广泛使用的高性能绿色建筑材料。但不锈钢具有应变强化特性，现有设计规范计算工字形截面梁的抗剪切承载力结果较为保守，基于连续强度法，对不锈钢工字形截面梁的剪切屈曲承载性能进行研究，考虑了不锈钢材料几何非线性和几何初始缺陷的影响。基于试验验证的有限元数值模型，开展不锈钢梁抗剪切承载力影响的参数分析，探究各关键参数对其的影响规律，并与现行规范（中国、美国、欧洲）的计算结果进行对比。结果表明，在腹板厚度等参数不变的情况下 ...
付怡乐, 徐红玉, 焦燏烽
doaj   +2 more sources

螺栓连接梯形波纹腹板钢梁受剪试验与分析

Jianzhu Gangjiegou Jinzhan
为研究螺栓连接梯形波纹腹板钢梁的受剪力学性能，设计并加工6根螺栓连接梯形波纹腹板钢梁试件，开展了钢梁受剪试验，试验结果表明：所有试件的波纹腹板均发生了剪切屈曲破坏，得到了波纹腹板的剪切屈曲临界荷载以及钢梁的受剪承载力指标。在考虑材料非线性、几何非线性以及几何初始缺陷的基础上，建立了螺栓连接梯形波纹腹板钢梁的有限元模型，并与钢梁受剪试验结果进行对比，验证了所建立有限元模型的准确性。进一步开展有限元参数分析，探究了波纹腹板高度、厚度、波纹宽度以及螺栓间距对钢梁受剪承载力的影响规律。根据试验数据 ...
高立强, 袁焕鑫, 王奥迪, 何昆松, 杜新喜   +4 more
doaj   +2 more sources

[Guideline for the diagnosis and treatment of common neonatal diseases in primary healthcare institutions: neonatal resuscitation (2025)]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Subspecialty Group of Neonatology, Society of Pediatrics, Chinese Medical Association; Editorial Board, Chinese Journal of Contemporary Pediatrics.   +3 more
europepmc   +1 more source

[Defect modification of calcium silicate and its application in oral bacteriostasis and tooth remineralization]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Hu Y, Zhang S, Zhang J, Luo H, Li Y, Zhang J, Chen X.   +6 more
europepmc   +1 more source

[Ovarian tissue cryopreservation and transplantation: a review of clinical progress in fertility preservation]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Chen J, Feng C, Jin M.
europepmc   +1 more source

[A low-dose CT image restoration method based on central guidance and alternating optimization]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhang X, Wang H, Zeng D, Bian Z.
europepmc   +1 more source

[Guidelines for the diagnosis and treatment of common neonatal diseases in primary healthcare institutions: neonatal jaundice (2025)]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Subspecialty Group of Neonatology, Society of Pediatrics, Chinese Medical Association; Editorial Board of ChineseJournal of Contemporary Pediatrics.   +2 more
europepmc   +1 more source

[Advances in ovarian tissue cryopreservation and transplanta-tion for fertility preservation in prepubertal patients]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Cheng J, Ruan X, DU J, Jin F, Gu M.
europepmc   +1 more source

[Analyzing the multidisciplinary strategies for diagnosis and treatment of patients with burns and trauma from a management perspective]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi
Chen H.
europepmc   +1 more source

[New concepts, methods, and techniques for unilateral cleft lip repair]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Shi B.
europepmc   +1 more source