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Study on the Improvement of the Safety Distance Model Based on Speed Difference Ting GEa, Xinsha FUb*, Ji MAc and Liuqing KANGd School of Civil Engineering and Transportation, South China University of Technology,Guangzhou 510640, Guangdong, China agt_happy@163.com, bfuxinsha@163.com, c371006918@qq.com, d979754203@qq.com Keywords: traffic engineering; car-following model; speed difference; safety distance; deceleration Abstract: Considering the diversity and random of the factors in traditional safety distance model, the deceleration and some time parameters in the braking action of the modified model were quantified first.
[9] Jie Xu, Wen Du, Hong Sun: Journal of Traffic and Transportation Engineering, Vol.2(2002),p.102-104.
[17] Xiaoyuan Wang, Xinyue Yang: Journal of Traffic and Transportation Engineering, Vol.7(2007)p.76-80.

., Chongqing 400067, China axuezheng@cmhk.com blicong@cmhk.com Keywords: road engineering; stability; limit equilibrium method; cracking subgrade; critical depth of crack.
But the crack depth and location data can be easy measured to determine crack subgrade stability quickly in the practical engineering.
Acknowledgements This work was funded by National and local joint engineering laboratory of traffic Civil Engineering Materials of Chongqing Jiaotong University (No.
Slop stability computations, Embankments Dam Engineering, John Wiley and Sons, New York. 1973, 47-86

Based on this study, the article raised the problem met during this non-destructive testing methods applied to engineering, and accumulated a certain amount of available engineering data.
In addition, nowadays the model test is too few for defect types in engineering, and the image library is still not established well.
Some important experiences groped and some data accumulated in this paper are beneficial to the future engineering practice.
Impact-Echo Method and Its Application to Civil Engineering.

Yang: Engineering Blasting, Vol. 12 (2006) No.4, p.28-31.
Li: Engineering Blasting, Vol. 15 (2009) No.4, p.58-61.
Zhang: Journal of Coal Science & Engineering, Vol. 16 (2010) No.3, p.262-266
Zhou: Engineering Blasting, Vol. 15 (2009) No.1, p.1-4.
International Conference on Electric Technology and Civil Engineering (Lushan, China, April 22-24, 2011).

Abstract： The bored piles are widely used in engineering, but also a lack of understanding of the mechanical mechanism of post-grouting technology, design and calculations based on the experience.
Therefore, you can use the computational model to simulatly analyze the engineering pile.
Usually putting a pressure box on the pile end to test the development and changes of the pile end resistance in engineering test.
Journal of Geotechnical Engineering, 2002, (6):743-746
The Important of Pile Performance by Base Grouting[J], Civil Engineering, 1993(97): 88-93.

., 017200, China 2 Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China alisanwa@yahoo.com bsunrongguan@126.com Keywords: tunnel, shotcrete lining and rock bolts, strength reduction finite element method, safety coefficient.
Introduction It has been the focus of research problems for tunnel surrounding rock's stability in geotechnical engineering.
This paper made a comprehensive analysis of the stability of tunnel surrounding rock with primary shotcrete lining and rock bolts by the finite element software ABAQUS according to the practical engineering..
References [1] Liming Zhang, Yingren Zheng, Zaiquan Wang and Jianxin Wang: Rock and Soil Mechanics Vol. 28 (2007), p. 97(in Chinese) [2] Peng Jia, Chunan Tang, Tianhong Yang and Lianchong: Mechanics in Engineering Vol. 29(2007), p. 50(in Chinese) [3] Xiaoli Yang, Lijin Wang and Zhirong Gui: Journal of Railway Science and Engineering Vol. 5(2008), p. 37(in Chinese) [4] Zienkiewicz O C, Humpheson C and Lewis R W: Geotechnique Vol. 25(1975), p. 671 [5] Duncan J M: Journal of Geotechnical Engineering Vol. 122(1996), p. 577 [6] Maotian Luan, Yajun Wu and Tingkai Nian: Journal of Seismology Vol., 23(2003), p. 1(in Chinese) [7] Shangyi Zhao and Yingren Zheng: Chinese Journal of Rock Mechanics and Engineering Vol. 23(2004), p. 3381(in Chinese) [8] Yangsong Zhang and Xiaozhao Li: Science Technology and Engineering Vol. 8(2008), p. 6513(in Chinese) [9] Ugai K: Soils an Foundations Vol.29(1989), p. 190 [10] Zuyu Chen: Rock Slope Stability Analysis-Theory, Methods and Programs.
(in Chinese) [11] Lane P A and Griffiths D V: Journal of Geotechnical and Geoenvironmental Engineering Vol. 126(2000), p. 443

Vibration Source Inversion and Vibration Evaluation of a Tall Residential Building Minfeng Lia, Guofang Jinb College of Civil Engineering, Tongji University, ShangHai, 200092, China aliminfeng001@163.com, btjjinguofang@126.com Key words: shear-wall structure; vibration source inversion; resonance; Vibration Dose Value (VDV); Annoyance-Based Checking Procedure (ABCP); vibration evaluation Abstract.
A suggestion for structure engineers is proposed to consider the effect of environment vibration in the vicinity of the building.
Steady-State Vibration of Subway-Soil-Building System, Journal of Engineering Mechanics, 1989, 115(1) , pp.145-162
Finite element analysis of structure-borne vibration from high-speed train, Soil Dynamics and Earthquake Engineering, 2007, 27, pp.259-273
A Fuzzy-stochastic Model for Human Response to Vibrations, Journal of Basic Science and Engineering, 2002, 10(3), pp. 287-294 ( in chinese)

Dept of Civil Eng & Mechanics, Sichuan University, Chengdu, P.R.
For practical engineering problems, the mode is finite body with complex stress state and constitutive relationship.
It is very difficult for engineer to find the solution of SIF for complex situation.
Engineering Fracture Mechanics.1977,9:931-938
Fatigue and Fracture of Engineering Materials and Structures.1992,15(11): 1051-1069

This paper used for exterior insulation system, a new form - decorative mortise slot insulation board exterior insulation systems integration, construction technology, a careful study and discussion, and through concrete examples and practical engineering Construction, operation points of the construction and quality control.
Xinpu construction group Co., LTD. adopts this material, has accumulated experience in the construction of the system and achieved good results through some engineering practice.
with Tongue and Groove (1) Color, size, arrangement, location are all meet the design requirements; (2) Mounting surface is smooth, and uniform straight seams, joints at both ends of the location meet the design requirements; (3) Anchor bolts should be installed in the middle of the indentation aluminum flange, air drilling screws first 2/3 of depth, use a screwdriver to tighten the state screw, screws and slide the keel shall not anchored wire, loose phenomenon; (4) One-component polyurethane foam filling seams, sew in the dark foam polyurethane foam to be completed when the embedded; shaped slit aluminum fasteners, and the first paste after tape on both sides of paper-based anti-fouling Note uniform weather sealant; (5) Weather sealant color, texture, pointing forming line with construction design requirements; and the deviation of installation is less than 1 mm; (6) When installed, paying attention to the condensate discharge pipe and accessories shall decorated with the civil
Inspection methods: observation check; concealed work acceptant record. 5) Systems engineering process seam sealant joints holes part should be full, dense, continuous, uniform, no bubbles, width and thickness should be consistent with design and technical standards.
Inspection methods: observation check. 4) The drip line, water aspect of systems engineering should be accurate, straight.

Flexural Behavior of Prestressed UHPC Beams Jian Yang 1, a, zhi Fang 2,b and Gong-lian Dai 1,c 1 School of Civil Engineering and Architecture, Central South University, China 2 School of Civil Engineering, Hunan University, China aJianyangyy@126.com, bFangzhi@hnu.cn, cdaigong@vip.Sina.com Key words: UHPC, Prestress, Beam, Flexural, Ductility.
Pei: Journal of materials in civil Engineering, ASCE., Vol 10 ( 1998),P.86 [10] ACI Committee 318.