Search results

Influence of Strontium Ferrite on Properties of 0-3 Cement-Based Piezoelectric Composites Shifeng Huang 1, a, Xue Li 2,b, Futian Liu 3,c, Yamei Liu 4,d, Xin Cheng 5,e and Zongjin Li 6,f 1Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 2Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 3Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 4Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 5Department of Material Science and Engineering, University of Jinan, Jinan 250022, China 6Department of Civil Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China a mse_huangsf@ujn.edu.cn, b snow_li365@163.com, cmse_liuft@ujn.edu.cn, e chengxin@ujn.edu.cn, f zongjin@ust.hk Keywords: cement based piezoelectric composite; dielectric constant; piezoelectric constant
Introduction With the modern development of civil engineering, the health monitoring of structures is being introduced.
While in civil engineering, it is required that the actuator could generate a strong power signal, and the sensors have high sensitivity and specific frequency response.
To meet the requirements of civil engineering structures, cement-based piezoelectric composites have been developed[1-4].
The acoustic impedance of the concrete utilizing in civil engineering diferentiate is greate different from that of the PLN creamic, which are 9.0×10 6 Mrayl and 23.32×106 Mrayl, respectively.

China Civil Engineering Journal, 2013, 46(2):70-77.
Engineering mechanics. 2013,30 (8) :35-41.
China Civil Engineering Journal, 2010, 43(2):32-38.
Journal of Civil Architectural & Environmental Engineering. 2009,31(5):31-37.
Reliability calculation methods of engineering structures[M].

Analysis of Mechanical Behaviors of a Single Pylon Cable-Stayed and Continuous Rigid-Frame Composite Bridge Dongming Feng1, a, Aiqun Li 1, b, Jianhui Li1, c, Guang Yang2, d 1School of Civil Engineering, Southeast University, Nanjing 210096, China 2The 4th Survey and Design Institute of China Railways, Wuhan 430063, China afeng200111@163.com, baiqunli@sina.com, csubway96@126.com, dyangguang@163.com Keywords: Composite Bridge; Single Pylon Cable-Stayed; Continuous Rigid-Frame; Simulating Analysis; Mechanical Behavior; Construction Process; Dynamic Characteristic Abstract: Xijiang River Bridge is the first hybrid railway bridge composed of single pylon cable-stayed and continuous rigid-frame system in China.
To study the mechanical behaviors of the novel bridge, 3-D finite element model (FEM) based on Midas/Civil software is created; spatial effect of stayed cable is discussed; the self-vibration behavior of this unique bridge is analyzed by adopting the subspace iteration method; then by means of simulating analysis of the whole construction process, stress paths of critical parts in different construction stages are calculated and presented to study its mechanical behaviors.
This paper adopts special bridge FEM software-Midas/Civil to make an accurate analysis of dynamic characteristics and construction process.
Fig.2 spatial FEM model based on Midas/Civil Effect analysis of stayed cable Before and after applying the secondary dead load (uniform load q=160KN/m), increment of cable force is shown as Fig.3 Fig.3 increment of cable force In this paper, in order to indicate the spatial effect of stayed cable in the composite structure, two coefficients (h1 and h2) are defined as: ， Where, h1 is the ratio of sum of the increment of all 13 pairs of cables and sum of the secondary dead load within one main span; h2 is the ratio of sum of the vertical component of increment of all 13 pairs of cables and sum of the secondary dead load within one main span; ai is the angle between stayed cable and bridge deck.

Combined with practical experience in engineering, this paper analyzed the necessity of the bridges for detection with the use of on-site static load test.
Also, it introduced the content and methods of the trial, as well as the studied domestic and international inspection techniques, thus discovering the engineering mechanical performance for bridges.
According to the design load level and test requirements, using Midas Civil 2012 to establish the finite element model for analysis of internal force calculation, determine the loading vehicle and quantity.
Engineering Situation The bridge is a 3 span prestressed concrete continuous box girder with variable cross section, with its total length 94.0m, width 40.0m.
Fig 1 Front view of the bridge Fig 2 Side view of the bridge The finite element model made by Midas Civil was shown in Fig.3 by 285 nodes and 270 units.

Mechanical Behavior Research of a High-Rise Hybrid Structure Based on Shaking Table Test Ying Zhou1, Jian Yu1,a State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China a yujian_tongji@126.com Keywords: Hybrid structure, Shaking table test, Seismic performance, Similitude relation Abstract.
In order to establish the systematic design method of performance-based earthquake engineering for steel-concrete hybrid structure tall buildings, a 1/15 scale model shaking table test is conducted in State Key Laboratory for Disaster Reduction in Civil Engineering of Tongji University.
Earthquake Engineering and Structural Dynamics. 36(2007):439-457

The QS profession should also take the initiative with regards to harmonizing the measurement of civil engineering works for BIM.
BIM for civil engineering works is not exactly new as some international engineering companies in Europe have already embarked on this initiative [17].
For systems re-engineering, the following systems with their attendant sub-systems would be considered: 1.0 Architectural 2.0 Structural 3.0 Mechanical & Electrical 4.0 Civil/Infrastructure 5.0 Geomatics 6.0 Quantity Surveying 7.0 Project Management 8.0 Facilities Management Basically, re-engineering of the systems would entail the following stages: a.
However, there is better potential for integrating design, schedule & cost for infrastructure (civil engineering) projects due to fewer systems involved, e.g., the building architectural & structural systems are notably absent.
This would determine whether current base documents such as the Malaysian Civil Engineering Standard Method of Measurement and certain overseas practices and documentation standards are acceptable and adaptable for BIM use in Malaysia.

Zamri Bin Ramli3,c 1CTMC, Faculty Of Civil Engineering, University Technology Malaysia, Malaysia. 2CTMC, Faculty Of Civil Engineering, University Technology Malaysia, Malaysia. 3Faculty Of Civil Engineering, University Technology Malaysia, Malaysia.
The final outcome of the study produces a guideline and database that served as a potential maintenance proposal and reference for engineering community in the future.
Masyhur Irsyam (2002), “The Effect Of The Latest Sumatra Earthquake To Malaysian Peninsular”, “Journal Of Civil Engineering, Universiti Teknologi Malaysia, Vol. 15 No. 2, 2002” [2] Christopher Rojahn and Chris D.

For bridge engineering, the structural health monitoring (SHM) system is cumulative data from time to time, but the whole system should be understudied in real time.
The data aim to help engineers understanding the system degradation of the bridge.
Introduction Civilonics is a new subject of civil engineering which is directed by ISIS Canada 14 years ago[1], the main innovation of the subject is improving the structure health monitoring system(SHM) with composites and high integrated smart sensors.
Summary KDD application for the SHM system is a quite new innovation for handling big data in civil engineering.
FRP-bridge design method based on the equivalence of complex physical quantities.The Second International Forum on Advances in Structural Engineering, Dalian, 2008.10 [4] Fayyad U and Stolorz P.

Introduction Recycling of industrial and construction waste in structural layers could make a significant contribution to fulfil specific aims of EU priorities in the field of civil engineering and, in particular, in the following areas: reduction of energy and raw material consumption e.g.
It also adjust the use of additives used for constructing of earth structures of transport and water civil engineering projects, embankments used to ground industrial projects, backfills etc.
Testing and quality control civil engineering ground structures include laboratory and field tests of soil and rocky minerals, modified ground and constructional layers and constructional elements from soils and minerals.
Saudi Engineering conference, Volume II (1995), pp.339-345 [12] M.
Polish-Russian-Slovak seminar Theoretical foundation of civil engineering.

An Analysis of Compressible Viscous Flows Around a Body Using Finite Element Method Shoichi NASU1,a and Mutsuto KAWAHARA2,b 1 Department of Civil Engineering, Chuo University, Kasuga 1-13-27, Bunkyo-ku, Tokyo, Japan 2Department of Civil Engineering, Chuo University, Kasuga 1-13-27, Bunkyo-ku, Tokyo, Japan anasu1013@civil.chuo-u.ac.jp, bkawa@civil.chuo-u.ac.jp Keywords: Compressible Navier-stokes equation, Sutherland law, Ideal gas law, Flow considering density change, SUPG method.