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., LTD, Guiyang, 550001, China 2Chongqing Municipality Qijiang district traffic Bureau, Qijiang, Chongqing, 401420, China 3School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing, 400074, China a453003132@qq.com, b932968079@qq.com,czouyanga@126.com, dzhoushuixing@126.com Keywords:Continuous Rigid Frame Bridge, pier structural type, wind load, elastic stability, project quality Abstract.Three kinds of structural pier forms–double thin wall pier, combined pier and single pier– were designed for prestressed concrete continuous rigid frame bridge with pier height that overs 100m.
ANSYS was utilized to analyze the elastic stability and engineering volume of pier and cap for continuous rigid frame bridge at the largest cantilever status under static wind load.
is the degree of freedom and the minimum value is meaningful for practical engineering.
Besides, when taking the slope ratio of the single pier part as 80:1, the pier could have a relatively good stability and a low engineering amount.
Slope/80:1 12.0×10.0 In plane 5.216 634.5 Constant Slope/60:1 12.0×10.833 In plane 5.650 641.2 0.65 Constant Slope/ Constant Slope 12.0×7.5 In plane 3.890 605.4 Constant Slope/80:1 12.0×10.750 In plane 6.381 639.2 Constant Slope/60:1 12.0×11.833 In plane 7.227 650.5 200 0.50 80:1/80:1 14.5×10.0 In plane 5.556 654.5 60:1/60:1 15.333×10.833 In plane 6.091 667.9 0.65 80:1/80:1 15.25×10.750 In plane 7.057 673.0 60:1/60:1 16.333×11.833 In plane 8.153 695.5 Table.4Stability Coefficient and Concrete Amount of Single Pier Pier Height /m Slope Rtio in Bridge Axial Direction Pier Bottom Width（）/m Buckling Mode Stability Coefficient Concrete Amount of Twin Bridge/m3 175 80:1 13.375×17.5 In plane 15.834 1364.6 60:1 14.833×17.5 In plane 19.002 1411.7 200 80:1 14.000×17.5 In plane 12.525 1582.6 60:1 15.667×17.5 In plane 15.293 1644.2 Conclusion Aiming at prestressed continuous rigid frame bridge with 100m ~ 200m pier height, the paper used ANSYS to calculate elastic stability coefficient and engineering

Damage detection in beam-type structures using fractal dimension trajectory of rotated higher vibration modes Runbo Bai1,2,a, Zongmei Xu2,b, Xiumei Qiu2,c 1State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering， Hohai University, Nanjing, P.R.
China 2College of Water-Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an, P.R.
Acknowledgements This study was supported by the Open Foundation of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (2011490111) and Shandong Provincial Science & Technology Development Project (2012GNC11203).
Kutz (Ed.), Mechanical Engineers Handbook, Wiley, New York (1998)
Engineering Structures, 29 (2007), p. 1612

Aging Behavior of the Polyether Polyurethane Films Irradiated by UV Haiyan Wang1,a, Yuwen Liu1, b, Bin Sun1,c, Shijie Huang1,c and Jifeng Tian2d 1Hebei key laboratory of applied chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China 2College of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, 066004, China ahywang@ysu.edu.cn, bliuyuwen@ysu.edu.cn, cliuywhitjjj@163.com, dtianjifeng123@126.com Keywords: Polyurethane, UV irradiation, aging Abstract: The failure behavior of polyether polyurethane films irradiated by UV depends on its molecular structures evolvement.
It is now being increasingly used in aircraft and automotive engineering, furniture trade, building industry, rail transport, electrical engineering and radioelectronics, dyeing of plastics, production of doubled and combined fabrics for various purposes[1].
Ayedi: Materials Science and Engineering A Vol. 527 (2010), p.1649 [3] P.

Study on Strength and Velocity of Longitudinal Wave of Low- Strength Concrete Wen-Hua Chen 1,a 1 Faculty of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China awhchen@center.njtu.edu.cn Keywords: low- strength concrete; stress wave; strength Abstract.
Filling material are divided into high strength concrete, common concrete, stones and others according the need of engineering, each filling-method has it's characters and it's adapted conditions[2].
(2) Characters of cemented material Table 5 shear test of cemented material 1 2 3 4 5 6 7 σ(MPa) 0.5 1.5 2.0 2.5 3.0 3.5 4.0 τ(MPa) 0.587 0.773 0.853 0.960 1.137 1.146 1.46 The formula of function of Shear stress and pressure is following, the data are listed in Fig. 7： ( )tg c τ σ ϕ= + so that ϕ=33° c=0.42356MPa 4235.001.0 += στ (1) 0.4 0.6 0.8 1 1.2 1.4 1.6 0 1 2 3 4 5 pressure(MPa) shear(MPa) Fig 7 Shear test of cemented material Relationship of Strength and Velocity of Longitudinal Wave of Low-Strength Concrete There are some relationships between strength and velocity of longitudinal wave of low-strength concrete form above researching work and tests, there are also some relationships between velocity of longitudinal wave and water content, velocity of longitudinal wave in-situ of engineering is monitored, we can evaluate the strength easily, because it is very difficult
Summaries The low-strength concrete can be used in many engineering, especially like exceed-big caves filling, for it is cheap expense and simple construction, and raw materials are easy to obtain.
The relationship of velocity of longitudinal wave and strength concrete is suggested as: 0.6967 0.5283 pv eσ= .This method can be used to evaluate strength of concrete in cave filling engineering by monitoring the velocity of longitudinal wave in-situ.

Design and Optimization of a New Type of Sliding Isolated Bearing and Its Application Wei Huanga, Wei Shub, Li Zhangc, Ping Wangd School of Civil Engineering and Architecture,Anhui University of Technology, Ma’anshan,Anhui,243002,China ahuangwei@ahut.edu.cn,bshuwei@ahut.edu.cn,cbutzhl@126.com,djiangongwp@126.com Keywords：Parameterization; Energy Dissipation Ring; Optimal Design; Hysteretic Energy Dissipation; Seismic Response Abstract.
References [1] W.Huang,G.D.Feng,andM.Q.Wang:Earthquake Resistant Engineering and Retrofitting.Vol. 27 (2005), p.50-56（In Chinese） [2] J.C.Zhang,Q.ALi,and L.F.Zhao:Earthquake Resistant Engineering and Retrofitting.Vol.30 (2008), p.10-14（In Chinese） [3] Q.A.Guan:Journal of Mecha- nical Strength.Vol.26 (2006), p.833-838（In Chinese） [4] W.Peng,B.H.Bai:Journal of Experimental Mechanics.Vol.19 (2004), p.342-345（In Chinese） [5] Whittaker A,Bertero V V,Alonso J: Earthquake Engineering Research Center, Universityof Califonia,Berkeley, CA, 1989 [6] Y.Zhou,J.Liu:Eorld Information on Earthquake Engineering.Vol.11 (1996), p.1-7（In Chinese） [7] H.

Acid treatment of aluminium dross: properties and application Adisorn Pratumma 1,a, Kowit Piyamongkala 1,b, Suchart Siengchin 2,3,c Rapeeporn Srisuk 2,d and Rapeephun Dangtungee 2,3,e* 1 Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand 2 Materials and Production Engineering Program, Department of Mechanical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand 3 Research Center of Nano Indrustries and Bioplastics, Science and Technology Research Institute, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand a adisornpratumma@gmail.com, b kwt@kmutnb.ac.th, c suchart.s.pe@tggs-bangkok.org, d rapeeporn.s.pe@tggs-bangkok.org, e rapeephun.mme@tggs-bangkok.org Keywords:
Chirakhom: National Conference on Civil Engineering 12th.
Bhattacharya: Minerals Engineering.

Comparison of Approximate Soil Thermal Conductivity Calculations with Laboratory Measurements and New Estimation Methods for Sandy Clayey Silt Balázs Nagy Budapest University of Technology and Economics, Faculty of Civil Engineering, Department of Architectural Engineering, 1111 Budapest, Műegyetem rkp. 3.
The measurement is done in the Laboratory of BUTE Dept. of Architectural Engineering.
Elek Tóth DLA retired associate professor, BUTE Dept. of Architectural Engineering and Dr.
[3] Farouki, Omar T., Thermal properties of soils, CRREL Monograph 81-1, United States Army Corps of Engineers, Hanover, New Hampshire, USA, 1981

Experimental Investigation of Lightweight Mortars Based on Recycled Olive Kernel through Hygric and Mechanical Characterization Nicolò Lo Presti1,a, Kamilia Abahri2,b*, Giovanni Castellazzi1,c, Paolo Mengoli3,d, Paolo Stabellini3,e 1Department of Civil, Chemical, Environmental and Materials Engineering (DICAM), University of Bologna, Viale del Risorgimento 2, Bologna 40136, Italy 2Université Paris-Saclay, ENS Paris-Saclay, CentraleSupélec, CNRS, LMPS - Laboratoire de Mécanique Paris-Saclay, 91190, Gif-sur-Yvette, France 3EDILTECO spa, Via dell’Industria 710, San Felice sul Panaro 41038, Italy anicolo.lopresti2@unibo.it, bkamilia.abahri@ens-paris-saclay.fr, cgiovanni.castellazzi@unibo.it, dpaolo.mengoli@edilteco.it, epaolo.stabellini@edilteco.it Keywords: Bio-based building materials, agricultural waste valorization, water absorption, mechanical properties.
Bonnet, “Microscopic estimation of swelling and shrinkage of hemp concrete in response to relative humidity variations,” Journal of Building Engineering, vol. 43, Nov. 2021, doi: 10.1016/j.jobe.2021.102929
Abahri, “Experimental investigation on the influence of immersion/drying cycles on the hygrothermal and mechanical properties of hemp concrete,” Journal of Building Engineering, vol. 32, Nov. 2020, doi: 10.1016/j.jobe.2020.101758
Shebani, “Production of particleboard using olive stone waste for interior design,” Journal of Building Engineering, vol. 29, May 2020, doi: 10.1016/j.jobe.2019.101119
Escadeillas, “Investigation of the engineering properties of environmentally-friendly self-compacting lightweight mortar containing olive kernel shells as aggregate,” J Clean Prod, vol. 249, Mar. 2020, doi: 10.1016/j.jclepro.2019.119406.

Experimental Assessment of the Influence of Outlet Geometry on the Airflow and Temperatures in the Ventilated Façade Cavity Erik Šagát1, a *, Libor Matějka1,b and Jan Pěnčík1,c 1Brno University of Technology, Faculty of Civil Engineering, Institute of Building Structures, Veveří 331/95, 602 00 Brno, Czech Republic asagat.e@fce.vutbr.cz, bmatejka.l@fce.vutbr.cz, cpencik.j@fce.vutbr.cz Keywords: Ventilated façade, convection, open joint, outlet geometry Abstract.
Royo-Pastor, Energy performance of a ventilated façade by simulation with experimental validation, Applied Thermal Engineering, Volume 66, Issues 1–2, May 2014, Pages 563-570, ISSN 1359-4311
Blanco, Energy evaluation of an horizontal open joint ventilated façade, Applied Thermal Engineering, Vol. 37, 2012, pp. 302-313
Cabeza, Numerical study on the thermal performance of a ventilated facade with PCM, Applied Thermal Engineering, Volume 61, Issue 2, 3 November 2013, Pages 372-380, ISSN 1359-4311
Martí-Herrero, Numerical analysis of the most appropriate heat transfer correlations for free ventilated double skin photovoltaic façades, Applied Thermal Engineering, Vol. 57, Iss. 1-2, 2013, pp. 57-68

An New Approach for Estimating Critical Injection Pessure and Fault Stability During Fluid Injection into Rock Reservoir Junping Zhou 1,2,a, Deguo Xiong3,Xuefu Xian 1,2, Yongdong Jiang 1,2, Zhanfang Liu 1,2and Dasheng Gu 1,2 1 State and local joint engineering laboratory of methane drainage in complex coal gas seam，Chongqing University，Chongqing 400044，China; 2 College of Resources and Environmental Sciences，Chongqing University，Chongqing 400044, China; 3 School of Energy Science and Engineering, Henan Polytechnic university, Jiaozuo, Henan 454000, China azhoujp1982@sina.com Key words: Fault reactivation, seismicity, poroelasticity, fluid injection pressure, Mohr–Coulomb criterion, carbon dioxide sequestration Abstract.
Various risks are related to the reactivation of these faults such as microseismicity maybe induced, which may have the potential for causing damage to operations equipment and civil structures. because of its fundamental importance for the physics of earthquakes as well as because of the immediate practical implications discontinuities including faults, fractures1,2.
Most induced microseismicitys induced by fluid injection are due to the pore-pressure increase, so determine the moderate fluid injection pressures is very important for every injection engineering. various methods have been developed for estimate the most optimal fluid injection pressures that don’t induce fault reactivation for existing faults within and surrounding porous reservoirs.
In: JA Hudson, editor, Comprehensive rock engineering: principles practice and projects.
Soil Dynamics and Earthquake Engineering.,29:382-393(2009)