Search

Your search keyword '"Wu, Qixin"' showing total 258 results
Start Over Author "Wu, Qixin"
258 results on '"Wu, Qixin"'

29. Research on the performance of modified shell ash mortar used for strengthening of historical masonry buildings

Author

Chen Zhouyi, Yang xin, Wu Qixin, Hu Hongmei, Shi Jianguang, and Xie Yiren

Subjects
Modified shell ash mortar, Workability, Mechanical performances, Volume stability, Water resistance, Historical masonry buildings, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

On the basis of previous research on the preparation of modified shell ash mortar, which can be used in the strengthening of historical masonry buildings, this paper carried out a further experimental study on the performance of this mortar. Workability, mechanical performances, volume stability and water resistance are the main aspects of the research focus. The test results show that compared with pure shell ash mortar, the compressive strength, flexural strength, tensile bond strength, volume stability and water resistance of the modified shell ash mortar are significantly improved. The pozzolanic activity effect and microaggregate filling effect of the two added modified materials act synergistically in the hydration and structural formation of shell ash mortar, which is the main reason for its improved performance following modification. The research results provide a basis for the application of modified shell ash mortar in the strengthening of historical masonry buildings.

Published
2023
Full Text
View/download PDF

39. Android Malware Detection Using Local Binary Pattern and Principal Component Analysis

Author

Wu, Qixin, Qin, Zheng, Zhang, Jinxin, Yin, Hui, Yang, Guangyi, Hu, Kuangsheng, Diniz Junqueira Barbosa, Simone, Series editor, Chen, Phoebe, Series editor, Filipe, Joaquim, Series editor, Kotenko, Igor, Series editor, Sivalingam, Krishna M., Series editor, Washio, Takashi, Series editor, Yuan, Junsong, Series editor, Zhou, Lizhu, Series editor, Zou, Beiji, editor, Li, Min, editor, Wang, Hongzhi, editor, Song, Xianhua, editor, Xie, Wei, editor, and Lu, Zeguang, editor

Published
2017
Full Text
View/download PDF

42. Deformation Pattern of Beams Rested on Different Foundation Models in Nonuniform Foundation Conditions.

Author

Zhou, Huanzhu, Wang, Yanning, Huang, Weiming, Zheng, Jun-jie, and Wu, Qixin

Subjects
DEFORMATIONS (Mechanics)
Abstract

The theoretical calculation considering foundation and beam interaction is widely employed to simulate thee deformation pattern of a beam rested on different foundation models. Based on the Kerr three-parameter foundation theory, a general analytical method that can calculate the vertical displacements on both ends of beams rested on nonuniform foundation is proposed. The proposed method introduces fewer unknown parameters and has the merits of avoiding complicated calculations of series expansion. The proposed analytical method is first compared with other foundation models and then validated by comparison with the results of finite-element numerical simulations. For both nonuniform and uniform foundation, the results show that the vertical displacements on both ends of beams calculated by the proposed method is closer to that of ABAQUS simulation results than those with the Winkler single-parameter foundation model and the Vlasov two-parameter foundation model. Note that the proposed foundation model can be transformed into the Vlasov foundation model and the Winkler foundation model by reducing the equivalent compression subgrade coefficient ratio n of the spring layers and the equivalent shear subgrade coefficient, respectively. The larger the compression modulus or the smaller the thickness, the more obvious is the uneven deformation pattern of the entire structure under nonuniform foundation conditions. When Poisson's ratio changes from 0.25 to 0.3, the vertical displacements on both ends of beams do not change significantly. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results