Design of remote test system for structural reinforcement of high-rise buildings under strong earthquake environment

2021 ◽  
Author(s):  
YunFei Gao
Keyword(s):  
Strong Earthquake ◽  
Test System ◽  
High Rise ◽  
Structural Reinforcement

scholarly journals DEVELOPMENT OF FRAME TEST SYSTEM TO ASSESS SEISMIC PERFORMANCE OF HIGH-RISE BUILDINGS

2009 ◽  
Vol 74 (640) ◽  
pp. 1163-1171 ◽  
Author(s):  
Takuya NAGAE ◽  
Yulin CHUNG ◽  
Yu SHIMADA ◽  
Kunio FUKUYAMA ◽  
Kouichi KAJIWARA ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Test System ◽  
High Rise

scholarly journals Analysis of high-rise building safety detection methods based on big data and artificial intelligence

2020 ◽  
Vol 16 (6) ◽  
pp. 155014772093530
Author(s):  
Jiaojiao Xu ◽  
Chuanjie Yan ◽  
Yangyang Su ◽  
Yong Liu
Keyword(s):  
Big Data ◽  
Data Storage ◽  
Model Building ◽  
Test System ◽  
Dynamic Monitoring ◽  
Detection Methods ◽  
Sensor Technology ◽  
Land Resource ◽  
Time Dynamic ◽  
High Rise

With rapid industrialization, the construction of high-rise buildings is a good and effective solution to the rational and effective use of land resources and alleviation of existing land resource tensions. Especially in the construction process, if there is a problem with the pile foundation, the building will inevitably be tilted, which will directly affect the personal safety of the construction workers and resident users. The experiments in this article use the concept of big data to divide the system into modules such as data collection, data preprocessing, feature extraction, prediction model building, and model application in order to provide massive data storage and parallel computing services to form a security test system. The experimental data show that wireless sensor technology is applied to the inclination monitoring of buildings, and a monitoring system based on wireless inclination sensors is designed to enable real-time dynamic monitoring of buildings to ensure human safety. When the experimental model frame is stable under normal environmental conditions, a nonstationary vibration is artificially produced for a period of time from the outside world, which is about 60 s higher than the traditional method, and the efficiency is also increased by about 80%, a situation where a building has a reversible tilt change.

Response of Sluice-Dam Structure on a Strong Earthquake Excitation

2013 ◽  
Vol 444-445 ◽  
pp. 874-878
Author(s):  
Lei Ge ◽  
Li Xiang Zhang ◽  
Ze Li
Keyword(s):  
Strong Earthquake ◽  
Large Scale ◽  
Complex Structure ◽  
Three Dimensional ◽  
Time History ◽  
Dynamical Response ◽  
Rock Foundation ◽  
Earthquake Excitation ◽  
Reservoir Water ◽  
High Rise

For a high-rise complex structure built at an earthquake zone, response characteristics to an earthquake action are always needed to be as an important index to evaluate its dynamical performances. This article carried out a three-dimensional dynamical response analyses of a large-scale complex sluice-dam structure by using the software of ANSYS under a strong earthquake excitation by nonlinear finite element method. Through the analyses of the time history response of the high-rise complex structure to the specified earthquake records, the seismic performances of the structure system under consideration of the rock foundation-sluice structure-reservoir water interaction were well evaluated.

scholarly journals Comparison between Domestic and Foreign Technical Standards to Review the Necessity of Establishing a Performance test System for High-pressure and High-flow Fire Pumps in Fire Trucks

2021 ◽  
Vol 35 (4) ◽  
pp. 65-70
Author(s):  
Dong-Ha Jang ◽  
Jae-Hyun Ku ◽  
Jae-Han Jeong ◽  
Woo-Sub Lim
Keyword(s):  
United States ◽  
High Pressure ◽  
Performance Test ◽  
The United States ◽  
Test System ◽  
High Flow ◽  
Technical Standards ◽  
High Rise ◽  
The Difference ◽  
In Fire

Recently, the demand for high-pressure and high-flow truck-mounted pumps has been increasing due to the frequent occurrence of fires in high-rise buildings. The Korean Fire Equipment Standards, which were specified by the National Fire Agency in January 2018, stipulate the performance test of high-pressure and high-flow fire pumps. In this paper, the relevance of the fire pump standard in Korean Fire Equipment Standards was evaluated by comparison and review the technical standards of domestic KFI certification, NFPA1901 in the United States and EN1028 in Europe based on the performance test of currently used truck-mounted fire pumps. Furthermore, the necessity of establishing performance test facilities for fire pumps was discussed based on the difference between the technical fire pump standards of National Fire Agency and current KFI certification to introduce accurate and safe high-pressure, high-flow fire pumps in the future.

Transmission electron microscopy of composite materials

1988 ◽  
Vol 46 ◽  
pp. 1012-1015
Author(s):  
K.P.D. Lagerlof
Keyword(s):  
Composite Materials ◽  
Physical Properties ◽  
Structural Defects ◽  
Structural Composites ◽  
Multiphase Materials ◽  
Structural Reinforcement ◽  
Transmission Electron ◽  
Reinforced Fiber ◽  
Particulate Reinforced Composites ◽  
Definition Of

Although most materials contain more than one phase, and thus are multiphase materials, the definition of composite materials is commonly used to describe those materials containing more than one phase deliberately added to obtain certain desired physical properties. Composite materials are often classified according to their application, i.e. structural composites and electronic composites, but may also be classified according to the type of compounds making up the composite, i.e. metal/ceramic, ceramic/ceramie and metal/semiconductor composites. For structural composites it is also common to refer to the type of structural reinforcement; whisker-reinforced, fiber-reinforced, or particulate reinforced composites [1-4].For all types of composite materials, it is of fundamental importance to understand the relationship between the microstructure and the observed physical properties, and it is therefore vital to properly characterize the microstructure. The interfaces separating the different phases comprising the composite are of particular interest to understand. In structural composites the interface is often the weakest part, where fracture will nucleate, and in electronic composites structural defects at or near the interface will affect the critical electronic properties.

Immunogold labeling of CMP-KDO synthetase produced by recombinant E. Coli cells

1987 ◽  
Vol 45 ◽  
pp. 924-925
Author(s):  
F. A. Durum ◽  
R. G. Goldman ◽  
T. J. Bolling ◽  
M. F. Miller
Keyword(s):  
Inclusion Bodies ◽  
Large Scale ◽  
Recombinant Dna ◽  
Test System ◽  
Cell Protein ◽  
Gram Negative Bacteria ◽  
Cytoplasmic Inclusions ◽  
Isolation And Purification ◽  
E Coli ◽  
Low Concentrations

CMP-KDO synthetase (CKS) is an enzyme which plays a key role in the synthesis of LPS, an outer membrane component unique to gram negative bacteria. CKS activates KDO to CMP-KDO for incorporation into LPS. The enzyme is normally present in low concentrations (0.02% of total cell protein) which makes it difficult to perform large scale isolation and purification. Recently, the gene for CKS from E. coli was cloned and various recombinant DNA constructs overproducing CKS several thousandfold (unpublished data) were derived. Interestingly, no cytoplasmic inclusions of overproduced CKS were observed by EM (Fig. 1) which is in contrast to other reports of large proteinaceous inclusion bodies in various overproducing recombinant strains. The present immunocytochemical study was undertaken to localize CKS in these cells.Immune labeling conditions were first optimized using a previously described cell-free test system. Briefly, this involves soaking small blocks of polymerized bovine serum albumin in purified CKS antigen and subjecting them to various fixation, embedding and immunochemical conditions.

Real Ear Sound Pressure Levels Developed by Three Portable Stereo System Earphones

1992 ◽  
Vol 1 (4) ◽  
pp. 52-55 ◽  
Author(s):  
Gail L. MacLean ◽  
Andrew Stuart ◽  
Robert Stenstrom
Keyword(s):  
High Frequency ◽  
Sound Pressure ◽  
Low Frequency ◽  
Test System ◽  
Output Frequency ◽  
Frequency Effects ◽  
Adult Men ◽  
Frequency Responses ◽  
Significant Difference ◽  
Sound Pressure Levels

Differences in real ear sound pressure levels (SPLs) with three portable stereo system (PSS) earphones (supraaural [Sony Model MDR-44], semiaural [Sony Model MDR-A15L], and insert [Sony Model MDR-E225]) were investigated. Twelve adult men served as subjects. Frequency response, high frequency average (HFA) output, peak output, peak output frequency, and overall RMS output for each PSS earphone were obtained with a probe tube microphone system (Fonix 6500 Hearing Aid Test System). Results indicated a significant difference in mean RMS outputs with nonsignificant differences in mean HFA outputs, peak outputs, and peak output frequencies among PSS earphones. Differences in mean overall RMS outputs were attributed to differences in low-frequency effects that were observed among the frequency responses of the three PSS earphones. It is suggested that one cannot assume equivalent real ear SPLs, with equivalent inputs, among different styles of PSS earphones.

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