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Influences of Beam-arch Combination Bridge Structure Arrangement on Mechanical Characteristics Richen Ji1, a, Yuezhen Xu1, b and Yingzhe Sun2, c 1 School of Civil Engineering, Lanzhou Jiao Tong University, Lanzhou, Gansu, 730070, China 2 Baicheng Highway Management Offices, Baicheng, Jilin, 137000, China ajirichen@126.com, bchyuezhen@163.com, cyingzhesun7@163.com Key words: Tied-arch Bridge, Suspender, Arch rib, Leaning-angle, Arrangement, Static analysis, Natural frequency.
For the arrangement of suspender and arch rib in the combination of beam and arch bridge, the finite element model is established according to the background of practical engineering.
References [1] Haigen Cheng and Shizhong Qiang: Journal of Highway and Transportation Research and Development Vol.19 (6), p. 63 (In Chinese) [2] Dingjun Wu, Xiaosong Wang and Haifan Xiang: Railway Journal Vol.25 (6), p. 96 (In Chinese) [3] Baochun Chen: Proceedings of the Seventh International Symposium on Structural Engineering for Young Exports (Science Press, Tianjin China 2002)
[4] Lacarbonara W and Colone V: Journal of Sound and Vibration Vol.304 (12), p. 72 [5] Kim S-E, Choi S-H and Ma S-S: Journal of Constructional Steel Research Vol.59 (1), p.91 [6] Yunhun Yi and Rucheng Xiao: Chinese Quarterly of Mechanics Vol.28 (1), p. 153 (In Chinese) [7] Zhao Liu and Zhitao Lv: China Civil Engineering Journal Vol.33 (5), p. 63 (In Chinese) [8] Yong L P and Trahair N S: Engineering Structure Vol.98 (7), p. 571 [9] Weixin Ren, Tong Zhao and Issam E: Journal of Structural Engineering Vol.130 (1), p. 1022 [10] Katsuya Toyofuku: JSAE Review Vol.20 (3), p.349

The Research of Backfill Grouting Pressure in Shield Tunneling Jinli Qiao 1, 2, a, Yongli Fan 3, b, Bo Liu1, 2, c, Yanping Zhang 1, 2, d, Yanyan Li 1, 2, e 1 School of Civil Engineering, Hebei University of Technology, Tianjin, 300401, China 2 Civil Engineering Technology Research Center of Hebei Province, Tianjin, 300401 3 Tianjin Heyi Concrete Co.Ltd., Tianjin,300300, China a qiaojinli@126.com, b fylqjl@yahoo.com.cn, c liiubo@163.com, d zyphit@163.com , e nicole820@163.com Keywords: shield tunneling; finite element methods; grouting pressure; ground settlement.
Based on the simulation results and the engineering ground settlement limit, propose reasonable synchronous slurry injection pressure and the relative method of controlling ground settlement.
Grouting pressure is less than 0.20MPa as surface subsidence, more than 0.20MPa, ground surface has the trend of the uplift, grouting pressure is 0.20Mpa, it is the surface subsidence that closer to tunnel axis, away from the tunnel axis for uplift trend.If the grouting pressure is too small, then the ground surface settlement is too large, it can not meet the need of engineering, if the grouting pressure is too large, then the surface uplift, destroy soil, even severe destruction to segment lining.
Tunnel Construction, 2007,27(4):12-15(in Chinese) [3] Zhang Li-min; Li Da-yong, Numerical simulation for soil deformations due to shield tunneling, Rock and Soil Mechanics, 2004, (25):75-78(in Chinese) [4] Han Yue-wang, Zhong Xiao-chun, Yu Xing-fu ,Experimental Research on the Backfill Grout Deformation and Grout Pressure Dissipation of Shield Tunnel, Chinese Journal of Underground Space and Engineering, 2007,3(6):1143-1175(in Chinese) [5] Thomas Kasper, Gunther Meschke.On the influence of face pressure, grouting pressure and TBM design in soft ground tunneling.
Tunnelling and Underground Space Technology . 2006, (21): 160–171 [6] Jiang Xinliang; Zhao Zhimin; Li Yuan ,Dynamic Simulation of the Effects of Shield Tunneling in Tianjin Subway Project on Neighboring Job Facilities, Journal of Tianjin University. 2006, 39(2): 188-193(in Chinese) [7] Wei Gang, Prediction of Ground Deformation Induced by Shield Tunneling Constrution, Chinese Journal of Rock Mechanics and Engineering, 2009, 28(2):418-424(in Chinese) [8] Qi Tao, Zhang Qinghe, Hu Xiangdong etc, A Practical Approach for Predicting Surface Settlements Induced by Shield Tunneling, Rock and Soil Mechanics, 2010,31(4):1247-1252(in Chinese)

Lim 1 1Department of Civil and Environmental Engineering, The University of Auckland, New Zealand 2Faculty of Engineering and Science, Curtin University Malaysia, Miri, Sarawak, Malaysia 3Senior Engineer, UV Global Geosolutions Pvt.
References [1] Roy, K., Tina Chui Huon Ting, Hieng Ho Lau and James BP Lim, Experimental Investigation into the Behaviour of Axially Loaded Back-to-back CFS Built-up Channel Sections, International conference on the ‘Trends and Recent Advances in Civil Engineering-TRACE-2018’, 23rd to 24th August, 2018, Noida, Uttar Pradesh, India
[5] Roy, K., Tina Chui Huon Ting, Hieng Ho Lau and James BP Lim, Finite Element Modelling of Back-to-back Built-up CFS Channel Columns under Compression, International conference on the ‘Trends and Recent Advances in Civil Engineering -TRACE-2018; 23rd to 24th August, 2018, Noida, Uttar Pradesh, India
-K Kang, Development of an axial load capacity equation for doubly symmetric built-up cold-formed sections, Journal of Structural Engineering 2013; American Society of Civil Engineers, 139(12), 04013008-13
[23] Ellobody, E. and Ben Young, Behavior of CFS plain angle columns, Journal of Structural Engineering, American Society of Civil Engineers 2005; 131(3), 457–66.

And the model is verified by engineering test data from the concrete structure under the wet and dry areas of marine.
The model was verified by engineering test data from the concrete structure under the wet and dry areas of marine.
Zou, Hydro-science and Engineering 6, 14 (2010)
Xiang, Journal of Zhejiang University (Engineering Science) 831, 44, (2010)
Journal of Civil, Architectural & Environmental Engineering 33, 12, ( 2011)

Experimental Study on Flexural Performance of PVA Fiber Reinforced Cement-Based Composites HAN Jian-ping1, 2, a, TAO Jin-yu1, 2, b 1Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China 2Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Lanzhou, Gansu 730050, China ajphan@lut.cn, btjytjy123@126.com Keywords: PVA fiber reinforced cement-based composites; flexural behavior; bending test; multiple cracking; strain hardening; toughness Abstract: As one kind of Engineering Cementitious Composites (ECC), polyvinyl alcohol (PVA) fiber reinforced cement-based composites has specific strain hardening characteristics and multiple cracking properties.
Li: Structural Engineering and Earthquake Engineering, Vol. 10(2) (1993), p. 37-48 [3] V.
Xu: Engineering Mechanics.
Xu: Engineering Mechanics.
Li: ASCE Journal of Materials in Civil Engineering, Vol. 6(3) (1994), p. 390-406 [9] M.

In particular, the problem of easy cracking has been plaguing engineers.
Modern scientific research and a large number of concrete engineering practices have proved that crack problems are unavoidable in concrete engineering.
Polymer cement-based material is a composite material obtained by combining the advantages of organic materials and inorganic materials to a certain extent, which has been widely used in the construction of civil engineering, water conservancy and hydropower, ports, railway bridges, highways and municipal engineering [11].
The plate constrained cracking test was carried out according to the relevant requirements of the China Civil Engineering Society Standard CCES 01-2004 [25].
(in Chinese) [25] China Civil Engineering Society Standard CCES 01-2004, Guide to durability design and construction of concrete structures, Beijing, China.

The application of network RTK technology in road construction survey Yuelei Qian1, a 1College of Urban and Environmental Sciences, Xuchang University, Xuchang, Henan, China Postal code: 461000 aqianyuelei@126.com Keywords: network RTK; engineering survey; CORS.
Accordingly, the application of network RTK in the relevant engineering survey are becoming more and more increasingly popular, along with its efficiency, high precision and reliability wining the favor of the majority of surveyors.
[4] H.Xuhui,Z.Zhihong and F.Xichen: Guangdong Architecture Civil Engineering Vol.7(2008),p.34 (In Chinese)

Analysis of Seismic Checking of Panel Zone with Unequal Beam Height in Steel Structures Sujuan Dai1, a, Huiyuan Shi1,b and Xiuting Wei1,c 1 College of Architecture and Civil Engineering.
The formula is utilized for an engineering example in this paper, and it can provide some references for the design of steel structure.
In practical engineering, we often come across the condition that height on two sides of joint region is unequal and there’s no calculation method for it at present.
Analysis of Engineering Example A four-story steel frame building was built up at Ⅱ kinds of subsoil in intensity 7 seismic zone.

How to apply the principle of projection transformation to deduce the segment’s real length in the right-angled triangle Gu Ji Ren1, a, Guo Ji Lin2, b, Zhou Tian Rui3, c, Zhang Jian4, d No. 200 , Cuiyan Road, Wanli District, Nanchang, Jiangxi Province 670365498@qq.com Key words: projection transformation segment real length the method of triangle Abstract: The problems of measurement such as real length and real shape are often met in solving practical engineering problems.The method of changing plane which is used to simplify the problem is researched how to change the relative position of the geometric elements relative to the projective plane in the space.
Introduction The parallel line and the vertical line in the relative projective plane can reflect the real length of the space line and the angle between the vertical line and projective plane,but the oblique line can’t. [2]we usually apply “the method of right-angled triangle” and the projection transformation to solve the problem in the practical engineering application.
Chart 3 The flexible applying the method of right-angled triangle Conclusions Applying the method of right-angled triangle to solve the real length of oblique line and the angle between the oblique line and the projective plane is simplier and more flexible comparing to the principle of projection transformation.It is difficult for the students in college to accept and flexibly appiy the theory for lack of the understanding of the principle of projection transformation which is widely used in solving practical engineering problems.
References [1] The drawing in civil engineering edited by Song zhaoquan published by the university of wuhan [2] The drawing in machinery edited by Guo jilin published by the University of Beijing science and technology

Control and Management in the Implementation Phase of the Civil Construction Yuzhen Guo Jiangxi Industrial Trade Career Technical College, Nanchang, Jiangxi, 330038 Keywords：Construction project；Cost control；Management Abstract：Strengthen the cost control and management of project is very important during the construction period，it is also important for developing the investment interests and reducing the cost of construction.
After the contract is signed，the construction team should contract and manage the design change, engineering visa, engineering measurement, payment of project funds according to the clauses in the contract to ensure the designed target can be achieved successfully.
The Compact of Engineering Construction Organization Design Review Link Engineering construction organization design is the main factor in bidding and sign of the contract in the construction process，it also depends the adjustment of the contract price，in addition，whether it is excellent or not depends the project time and quality directly，so，it is necessary to strengthen the project design review in the phase.
On materials control and management，cost engineer should control and check the price and whole expense of materials strictly according to need about the construction.
In addition，from the standpoint of the owners，they can pay the funds according to the project cost check provided by the engineer，they can also deny the unreasonable requirements from some construction units ,in this way，advanced appropriation can be rejected.