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ON YIELD table AND ITS GENERAL RESEARCH CONDITION IN CHINA

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Journal of Northeast Forestry University 1992年第2期3卷 70-77页

作者： WengGuoqing Chang Kun Forest Inventory and Planning Academy Hao Wenkang Zhang Yanli Northeast Forestry University Lcc Longchang Zhejiang Forestry Institutc Forest Inventory and Planning Academy China Northeast Forestry University China Zhejiang Forestry Institute China

The development and rc research condition about yield table in China were in-troduced in this *** methods of constructing yield table were also described and studied in brief.

关键词： Yield table

STUDY ON THE METHOD OF CONSTRUCTING VARIABLE-DENSITY YIELD table

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Journal of Northeast Forestry University 1991年第2期2卷 95-99页

作者： Lee Longchang Hao Wenkang Weng Guoqing Northeast Forestry University Northeast Forestry University China

Growth of stand average DBH is discussed bassed on relationship between standgrowth and stand *** equation of stand average DBH is fitted with data of 65 plotsand 130 stem analyses of site index 18 meter of old-growth Larch(Larix gmeliniiRupr.)collectedin Great Xing’an Mountain m Inner ***-density yield tables of old—growth Larchare constructed based on growth equation of stand average DBH and relationship between standaverage DBH and the other stand attributes.

关键词： Dahurian larch Stand density Variable-density yield table

A STUDY ON THE BASIC CHARACTERISTICS OF table TENNIS TECHNIQUES AND THE REGULATIONS GOVERNING THE SAME

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北京体育大学学报 1996年第S2期19卷 45-51页

作者： WANG Pu(Beijing University of Physical Eduction)

The paper applied the literature review,interviews and experimental methods in order to study on the basic characteristics of the table tennis techniques and the regulatrous goverming the same. Results showed that the table tennis technique had the three basic characteristics of opening,diversity and precisenese. The processing of the technique formation mainly reflected the three basic laws of the stage division,sequening and principle. Graspry ots basic characteristics and fllowing to its basic regulation in the tabletennis teaching and training can shorten the teaching process and improve its quality as well as master a variety of tbe techniqueds in short time.

关键词： table tennis technique basic characteristics regulation of technique

Shaking table Test Study on Dynamic Characteristics of Bridge Foundation Reinforcement on Slopes

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Earthquake Research in China 2017年第3期31卷 403-413页

作者： Lei Da Qi Zhihui Jiang Guanlu Wang Zhimeng Li Anhong School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of High-Speed Railway Engineering Ministry of EducationChengdu 610031China China Railway Eryuan Engineering Group Co.Ltd. Chengdu 610031China

With the fast development of bridge construction in mountainous and seismic areas,it is necessary to conduct related research. Based on the design of a shaking table model test,here are the following test results: the filtering effect exists in soil and is affected by the dynamic constraint conditions,the amplitude is strengthened around the natural frequency and weakened in other frequency bands in the Fourier spectrum. Since the acceleration scaling effect occurred on a sloped surface,the acceleration response decreases from the outside to the inside in soil. The dynamic response is relatively strong near the slip surface in bedrock due to the reflection of seismic waves. The failure mode of landslide is decided by the slope angle and slipping mass distribution, and the test shows the front row stabilizing piles should keep a proper distance from bridge foundation so that seismic resistance can be guaranteed for the bridge foundation.

关键词： Shaking table test Stabilizing pile Filtering effect Dynamic response Failure mode

Shaking table Tests on Bridge Foundation Reinforced by Antislide Piles on Slope

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Earthquake Research in China 2019年第3期33卷 514-524页

作者： ZHOU Heng SU Qian LIU Jie YUE Fei School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of High-Speed Railway Engineering Ministry of EducationChengdu 610031China

Based on the requirement of seismic reinforcement of bridge foundation on slope in the Chengdu-Lanzhou railway project,a shaking table model test of anti-slide pile protecting bridge foundation in landslide section is designed and completed. By applying Wenchuan seismic waves with different acceleration peaks,the stress and deformation characteristics of bridge pile foundation and anti-slide pile are analyzed,and the failure mode is discussed. Results show that the dynamic response of bridge pile and anti-slide pile are affected by the peak value of seismic acceleration of earthquake,with which the stress and deformation of the structure increase. The maximum dynamic earth pressure and the moment of anti-slide piles are located near the sliding surface,while that of bridge piles are located at the top of the pile. Based on the dynamic response of structure,local reinforcement needs to be carried out to meet the requirement of the seismic design. The PGA amplification factor of the surface is greater than the inside,and it decreases with the increase of the input seismic acceleration peak. When the slope failure occurs,the tension cracks are mainly produced in the shallow sliding zone and the coarse particles at the foot of the slope are accumulated.

关键词： Shaking table test Anti-slide pile Bridge pile foundation Dynamic response Damage mode

The Shaking table Test on the Performance of Cement-mixed Piles in Liquefiable Railway Foundations

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Earthquake Research in China 2019年第1期33卷 120-131页

作者： ZHAO Mengyi XIE Qiang CAO Xinwen ZHAO Wen Faculty of Geosciences and Environmental Engineering Southwest Jiaotong University School of Civil Engineering Southwest Jiaotong University

Cement-mixed piles,as countermeasure against liquefaction of silt and sand ground,can improve the shear strength and bearing capacity of foundation soil,meaning cement-mixed piles are capable of resisting displacement when an earthquake happens. However,investigations of cement-mixed piles by experimental methods such as the shaking table test is few and far between. It is especially true for the seismic performance of cement-mixed piles in liquefiable railway foundations in high seismic intensity regions. To this end,a cross-section of the Yuxi-Mengzi railway was selected as the prototype and studied by the shaking table test in this study. The results showed that composite foundation of cementmixed piles was not liquefied when the seismic acceleration was lower than 0. 30g. In the process of acceleration increasing from 0. 30g at 2Hz to 0. 60g at 3Hz,the upper middle silt outside slope toe was partly liquefied. The foundation soil under the shoulders and center of subgrade was far from the initial liquefaction criterion during the test. Cementmixed piles can effectively reduce the embankment settlement and differential settlement. It can be concluded that, the design of cement-mixed piles can ensure the seismic performance of the subgrade,and satisfy the seismic design requirements of the YuxiMengzi railway in areas of VIII degrees seismic fortification intensity.

关键词： Liquefaction Cement-mixed pile Railway Shaking table test

Study of Shaking table Test on Dynamic Response Characteristics and Failure Mechanism of the Loess Slope

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Earthquake Research in China 2020年第1期34卷 121-135页

作者： PU Xiaowu WANG Lanmin WANG Ping CHAI Shaofeng XU Shiyang Key Laboratory of Loess Earthquake Engineering Lanzhou Institute of SeismologyCEALanzhou 730000China Key Laboratory of Mechanics on Disaster and Environment in Western China Lanzhou UniversityMinistry of EducationLanzhou 730000China College of Civil Engineering and Mechanics Lanzhou UniversityLanzhou 730000China

The natural loess that covers the ground surface has good stability due to its low water ***,when violent earthquakes occur,the strong dynamic stress generated in the slope may induce landslide disasters with different *** this paper,a large-scale shaking table model test is used to reveal the dynamic response and instability failure process of the loess *** test results show that different parts of the slope have different vibration characteristics and the first natural frequency in the model increases with the increase of the slope *** response acceleration of different parts may change due to the coupling relationship between the spectral characteristics of input wave and the natural frequencies of different parts of slope,suggesting the characteristics of regional differential dynamic *** the condition of different dynamic response,stress state and boundary conditions of different parts of slope,a rapid microstructural damage,cumulative residual deformation evolution,and tension-shear coupling instability failure process may appear at the top of the slope with the strong dynamic response associated with the increase of dynamic loading *** Sd values presented in this paper may reflect soil damage and slope instability and failure.

关键词： Loess slope Shaking table Dynamic response Microstructure damage Failure

COMPREHENSIVE table OF CONTENTS

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中国腐蚀与防护学报 2002年第6期 63-65页

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关键词： table

A NORMAL YIELD table FOR LARIX GMELINII INDAXIN GANLING BASED ON THE MAXIMUM GROWTH RATE METHOD

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Journal of Northeast Forestry University 1990年第1期1卷 61-64页

作者： Weng Guoqing Hao Wenkang Lee LongchangNortheast Forestry University, Harbin 150040 P. R. China

Normal yield tables for Larix gmelimii(Rupr) Rupr were constructed from 228 tem-porary sample plois.A normal stand was defined as having the maximum growh rate parameter,based on the theory of forest *** area growth curves were described with Richard’s equa-tion according to Von-Bertalanfy’s growth theory and allometric *** growth rate parameterwas found to be K,so a normal stand had maximum *** the basal area growth curve of a nor-mal stand was obtaied simply by increasing K.A normal yield table for *** of Daxinganlingnatural forest was then constructed.

关键词： Larix gmelinii. Normal vield table