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Exploration and Practice of Integrating Ideological and Political Education into the“Comprehensive Practical Training in Prefabricated Building Construction”Course

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Journal of Contemporary Educational research 2024年第9期8卷 166-170页

作者： Chunhui Yang School of Civil Engineering Guangxi Polytechnic of ConstructionNanning 530007Guangxi Zhuang Autonomous RegionChina

This paper focuses on the ideological and political construction of the course“Comprehensive Practical Training of Prefabricated Building Construction”and deeply discusses its exploration and practice *** building an ideological and political teaching system in line with the characteristics of“Comprehensive Training of Prefabricated Building Construction,”ideological and political elements such as industry spirit,professional ethics,and social responsibility are organically integrated into all links of practical training and *** terms of teaching methods,various innovative means such as case analysis,role-playing,and group discussion are adopted,and modern information technologies such as virtual reality and augmented reality are used to improve the teaching *** the same time,a diversified teaching evaluation system is formulated to ensure the sustainability and effectiveness of ideological and political *** study not only enriches the theoretical research of ideological and political courses but also provides a practical reference for the ideological and political construction of similar courses,which is of great significance for promoting the overall improvement of the quality of talent training in higher education.

关键词： Prefabricated building Comprehensive practical training Ideological and political courses Practice

Digital Application Objectives and Benefit Analysis of BIM Technology in Large-Scale Comprehensive Development projects

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Journal of World Architecture 2024年第5期8卷 24-28页

作者： Chunhui Yang School of Civil Engineering Guangxi Polytechnic of ConstructionNanning 530007Guangxi Zhuang Autonomous RegionChina

This paper discusses the digital application and benefit analysis of building information model(BIM)technology in the large-scale comprehensive development project of the Guangxi headquarters *** project covers a total area of 92,100 square meters,with a total construction area of 379,700 square meters,including a variety of architectural *** three-dimensional modeling and simulation analysis,BIM technology significantly enhances the design quality and efficiency,shortens the design cycle by about 20%,and promotes the collaboration and integration of project management,improving the management efficiency by about 25%.During the construction phase,the collision detection and four-dimensional visual management functions of BIM technology have improved construction efficiency by about 15%and saved the cost by about 10%.In addition,BIM technology has promoted green building and sustainable development,achieved the dual improvement of technical and economic indicators and social and economic benefits,set an example for enterprises in digital transformation,and opened up new market businesses.

关键词： Building information model technology Large-scale comprehensive development Digital application Benefit analysis

Wave equation tomographyin baseband with phase correction from the first arrival traveltimes

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石油物探 2017年第1期56卷 69-74页

作者： YIN Feng Jerry HARRIS Department of Geophysics Stanford University

We use the first arrival traveltime to correct the phase distortion in a nonlinear wave equation inversion *** improves the precision of tomographic reconstruction of a velocity structure with large variations and helps solve the ill-posed problem of wave equation *** the variation of the velocity distribution is large,general non-linear wave equation inversions are very ill-posed and for such strong nonlinear we can not obtain a correct *** of main reasons is that the calculated and observed phase of the wavefield differs greatly if the initial model is far from the true *** leads to highly mismatched phase between the calculated and the observed wave *** is so-called"Cycle Skipping"problem in the full waveform *** phase mismatch is even more pronounced if a high operating frequency is employed in order to increase *** address this problem,we use the first arrival to"demodulate"the wave field in the frequency domain with a goal of restoring the phase of wave *** we minimize an objective function consisting of so called"demodulated"wave field to solve wave equation inversion *** this way,we find that the inversion is much improved,and when the velocity perturbation in a complicated model reaches 35%,we can still obtain a good inversion.A computer simulation shows that our method is very robust for acoustical wave inversion with good reconstruction precision.

关键词：全波形反演随机边界异构并行作业池速度反演

Study on vulnerability matrices of masonry buildings of mainland of China

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Earthquake Engineering and Engineering Vibration 2018年第2期17卷 251-259页

作者： Sun Baitao Zhang Guixin Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration Harbin 150080China

The degree and distribution of damage to buildings subjected to earthquakes is a concern of the Chinese Government and the *** damage data indicates that seismic capacities of different types of building structures in various regions throughout mainland of China are ***,the seismic capacities of the same type of structure in different regions may *** contributions of this research are summarized as follows：1）Vulnerability matrices and earthquake damage matrices of masonry structures in mainland of China were chosen as research *** aim was to analyze the differences in seismic capacities of sample matrices and to present general rules for categorizing seismic resistance.2）Curves relating the percentage of damaged masonry structures with different seismic resistances subjected to seismic demand in different regions of seismic intensity（VI to X）have been developed.3）A method has been proposed to build vulnerability matrices of masonry *** damage ratio for masonry structures under high-intensity events such as the Ms 6.1 Panzhihua earthquake in Sichuan province on 30 August2008,was calculated to verify the applicability of this *** research offers a significant theoretical basis for predicting seismic damage and direct loss assessment of groups of buildings,as well as for earthquake disaster insurance.

关键词： seismic capacity seismic intensity seismic resistances seismic damage matrix

Comparison between several seismic inversion methods and their application in mountainous coal fields of western China

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Mining Science and Technology 2010年第4期20卷 585-590页

作者： XU Yongzhong CHEN Tongjun CHEN Shizhong HUANG Weichuan WU Gang School of Resources and Geosciences China University of Mining & Technology Xuzhou 221008 China Institute of Geophysics China Earthquake Administration Beijing 100081 China

With the objective of establishing the necessary conditions for 3D seismic data from mountainous areas in western China, we compared the application results of wave impedance technology in the lithology and exploration of coal fields. First, we introduce principles and features of three kinds of inversion methods. i.e., Model-Based Inversion, Constrained Sparse Spike Inversion (CSSI) and Geology-seismic Feature Inversion. Secondly, these inversion methods are contrasted in their application to 3D seismic data from some coalfields in western China. The main information provided by the research includes: improving the vertical resolution of coal deposit strata, inferring lateral variation of the lithology and predicting coal seams and their roof lithology. Finally, the comparison between the three methods shows that the model-based inversion has the higher resolution, while CSSI inversion has better waveform continuity. The geology-seismic feature inversion requires information from a large number of wells and many types of logging curves of good quality. All three methods can meet the requirements of seismic exploration for lithological exploration in coal fields.

关键词： model-based inversion constrained sparse spike inversion geology-seismic feature inversion coal seam lithological exploration

Characteristics of gravity fields in the Jinggu M6. 6 earthquake

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Geodesy and Geodynamics 2014年第4期5卷 34-37页

作者： Sun Shaoan Hao Hongtao Wei Jin Key Laboratory of Earthquake Geodesy Institute of SeismologyChina Earthquake Administration Wuhan Base of Institute of Crustal Dynamics China Earthquake Administration

Based on the study of high-precision gravity data obtained from recent studies and the regional gravi- ty network for Yunnan province, a variation in the regional gravity field was identified before the occurrence of ... 详细信息

关键词： Jinggu earthquake gravity field evolution characteristics

Simulation of coseismic effects of the Ms7. 0 Lushan earthquake

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Geodesy and Geodynamics 2013年第3期4卷 12-18页

作者： Tan Hongbo Shen Chongyang Wei Jin Zhao Bin Wang Jian Xuan Songbai Key Laboratory of Earthquake Geodesy Institute of SeismologyChina Earthuake Administration Wuhan Bace of Institute of Crustal Dynamics China Earthquake Administration

Using plane dislocation theory and the seismic-wave inversion results from the Institute of Geophysics, China Earthquake Administration and the Institute of Geodesy and Geophysics, Chinese Academy of Sciences models, the surface coseismic deformation and gravity changes caused by the 2013 Ms7.0 Lushan earthquake are simulated. The simulations of coseismic gravity change and deformation indicate that the dislocation has dip-slip characteristics. The results also show that the coseismic deformation exhibits a symmetrical, positive-and-negative distribution, with the deformation usually being less than 10 mm in the far- field but up to 140 mm in the near-field. The gravity changes are concentrated on the fault-projection area, which is greatly affected by the vertical surface deformation. The gravity change and vertical deformation in the far field are usually less than and 5 mm, respectively, but reach and 330 mm, respectively, in the near field. The simulated results agree well with the measured resuhs, which suggests a theoretical basis for the observed change in gravity before and after this earthquake.

关键词： Lushan earthquake dislocation theory coseismic effects simulation

Study on Precise Location and Structure of Earthquakes in the Shanxi Reservoir,Zhejiang Province

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Earthquake research in China 2011年第4期25卷 456-467页

作者： Zhu Xinyun Zhang Fan Yu Junyi Earthquake Administration of Zhejiang Province Hangzhon 310013 China Institute of Geophysics CEA Beijing 100081 China

The Shanxi reservoir earthquakes are significant seismic events in southern Zhejiang Province in recent years, an area with fewer and weaker earthquakes. The seismicity showed an intermittent characteristic and group distribution. The epicenters located by the seismic network did not show a predominant direction and the seismogenic structure is not clear. In the study, the nonlinear imaginary wave travel time equation was linearized and solved, and the source position, initial imaginary velocity and travel time residuals were obtained. Then by doubling the standard deviation as time residuals, the maximum error generated from longitude, latitude, depth and imaginary velocity was calculated. The genetic population was structured using the maximum error and the end result of earthquake location was obtained by genetic algorithm. The result of relocation of the Shanxi reservoir earthquakes with this method shows that earthquakes are largely concentrated on a near-vertical, northwest oriented fault plane, and the included angles between the normal of the plane and the due north, due east and vertical directions are 46~, 44~, and 87~, respectively. The result is in agreement with that of comprehensive fault plane solutions of small earthquakes. The average depth of the earthquakes was 4.7km, the maximum depth 9.5kin, and the minimum depth 1.7km. The epicenters showed a northwestward narrow banded distribution, and the focal depth increased along the northwest direction. There was a discontinuous seismic gap of about 3.5km long at the northwest end of the strip. The characteristics of source parameters obtained by using the Borun model were not significantly different from that of tectonic earthquakes. seismic stress drop was about 0.33MPa, and the average stress drop was 0.88MPa. According to the stress drop＇ spatial distribution, the seismic discontinuities segment at the northwest end of the strip is in a low stress drop zone.

关键词： Reservoir induced earthquake Genetic algorithm Precise location Faultplane Stress drop

Preliminary results pertaining to coseismic displacement and preseismic strain accumulation of the Lushan M_S7.0 earthquake,as reflected by GPS surveying

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Chinese Science Bulletin 2013年第28期58卷 3460-3466页

作者： WU YanQiang JIANG ZaiSen WANG Min CHE Shi LIAO Hua LI Qiang LI Peng YANG YongLin XIANG HePing SHAO ZhiGang WANG WuXing WEI WenXin LIU XiaoXia CEA Key Laboratory of Earthquake Prediction (Institute of Earthquake Science) China Earthquake Administration State Key Laboratory of Earthquake Dynamics Institute of GeologyChina Earthquake Administration China Earthquake Administration Earthquake Administration of Sichuan Province National Earthquake Infrastructure Service China Earthquake Administration

This paper presents the coseismic displacement and preseismic deformation fields of the Lushan MS7.0 earthquake that occurred on April 20,*** results are based on GPS observations along the Longmenshan fault and within its *** coseismic displacement and preseismic GPS results indicate that in the strain release of this earthquake,the thrust rupture is dominant and the laevorotation movement is ***,we infer that any possible the rupture does not reach the earth’s surface,and the seismogenic fault is most likely one fault to the east of the Guanxian-Anxian *** detailed results are obtainable.(1)The southern segment of the Longmenshan fault is locked preceding the Lushan *** the Wenchuan earthquake,the strain accumulation rate in the southeast direction accelerates in the epicenter of the Lushan earthquake,and the angle between the principal compressional strain and the seismogenic fault indicates that a sinistral deformation background in the direction of the seismogenic fault precedes the Lushan ***,it is evident that the Wenchuan MS8.0 earthquake accelerated the pregnancy of the Lushan earthquake.(2)The coseismic displacements reflected by GPS data are mainly located in a region that is 230 km(NW direction)×100 km(SW direction),and coseismic displacements larger than 10 mm lie predominantly in a100-km region(NW direction).(3)On a large scale,the coseismic displacement shows thrust characteristics,but the associated values are remarkably small in the near field(within 70 km)of the earthquake ***,the thrust movement in this70-km region does not correspond with the attenuation characteristics of the strain release,indicating that the rupture of this earthquake does not reach the earth’s surface.(4)The laevorotation movements are remarkable in the 50-km region,which is located in the hanging wall that is close to the earthquake fault,and the corresponding values in this case correlate with

关键词：地震发生同震位移 GPS测量应变积累庐山震前龙门山断裂带应变释放