A suspension bridge is the most suitable type of structure for a long-span bridge due to rational use of structural materials. Increased deformability, which is conditioned by appearance of the elastic and kinematic displacements, is the major disadvantage of suspension bridges. The problem of increased kinematic displacements under the action of non-symmetrical load can be solved by prestressing. The prestressed suspension bridge with the span of 200 m was considered as an object of investigations. The cable truss with the cross web was considered as the main load carrying structure of the prestressed suspension bridge. The considered cable truss was optimized by 47 variable factors using Genetic algorithm and FEM program ANSYS. It was stated, that the maximum total displacements are reduced up to 29.9% by using of the cable truss with the rational characteristics instead of the single cable in the case of the worst situated load.
A. Juozapaitis, A. Norkus, "Displacement analysis of asymmetrically
loaded cable," Journal of Civil Engineering and Management, 10(4), pp.
A. Juozapaitis, S. Idnurm, G. Kaklauskas, J. Idnurm, V. Gribniak, "Nonlinear
analysis of suspension bridges with flexible and rigid cables," Journal of Civil Engineering and Management, 16(1), pp. 149-154,
J. Strasky, Stress Ribbon and Cable Supported Pedestrian Bridge.
London: Thomas Telford Publishing, 2005, 213 p.
 С. Бахтин, И. Овчинников, Р. Инамов, Висячие и вантовые мосты
"Suspension and Cable Bridges". Саратов: Сарат. гос. техн. ун-т,
1999, 124 c.
 В. Качурин, А. Брагин, Б. Ерунов, Проектирование висячих и
вантовых мостов. Москва: Издательство «Транспорт», 1971, 280 с.
 D. Serdjuks, K. Rocens, "Decrease the Displacements of a Composite
Saddle-Shaped Cable Roof," Mechanics of Composite Materials, 40(5),
pp. 675-684, 2004.
 V. Goremikins, K. Rocens, D. Serdjuks, "Rational Structure of Cable
Truss", World Academy of Science, Engineering and Technology, 76,
pp. 571-578, 2011.
 G. G. Schierle, Structure and Design. San Diego: Cognella, 2012, 624 p.
 V. Goremikins, K. Rocens, D. Serdjuks, "Rational Large Span Structure
of Composite Pultrusion Trussed Beam," Scientific Journal of RTU.
Construction Science, Vol. 11, pp. 26-31, 2010.
 V. Goremikins, K. Rocens, D. Serdjuks, "Rational Structure of
Composite Trussed Beam," in Proc. of the 16th International
Conference "Mechanics of Composite Materials", Riga, Latvia, 2010, p.
 V. Goremikins, K. Rocens, D. Serdjuks, "Decreasing Displacements of
Prestressed Suspension Bridge," Journal of Civil Engineering and
Management, 18(6), pp. 858-866, 2012.
 V. Goremikins, K. Rocens, D. Serdjuks, "Decreasing of Displacements
of Prestressed Cable Truss," An International Journal of Science,
Engineering and Technology "World Academy of Science, Engineering
and Technology", 63, pp. 554-562, 2012.
 V. Goremikins, K. Rocens, D. Serdjuks, "Cable Truss Analyses for
Suspension Bridge," in Proc. of 10th International Scientific Conference
"Engineering for Rural Development", Jelgava, Latvia, 2012, Vol. 11,
 Fiberline Composites A/S. Design Manual, Middelfart: Fiberline
Composites A/S, 2002, 326 p.
 R. Xiang, H. Ping-ming, M. Kui-hua, P. Zhi-hua, "Influence of
Temperature on Main Cable Sagging of Suspension Bridge," Journal of
Zhengzhou University Engineering Science, 30(4), pp. 22-25, 2009.
 Y. Achkire, A. Preumont, A. "Active tendon control of cable-stayed
bridges," Earthquake Engineering and Structural Dynamics, 25(6), pp.
 European Committee for Standardization, Eurocode 3: Design of steel
structures – Part 1.11: Design of structures with tensile components,
 Feyrer K., Wire Ropes. Berlin: Springer-Verlag Berlin Heidelberg, 2007.
 European Committee for Standardization, Eurocode 1: Actions on structures - Part 2: Traffic loads on bridges, Brussels, 2004;
 V. Lute, A. Upadhyay, K. Singh, K. "Computationally efficient analysis of cable-stayed bridge for GA-based optimization," Engineering Applications of Artificial Intelligence, 22, pp. 750-758,2009.
 D. gegok, R. Belevieius, "Global optimization of trusses with a modified Ggenetic Aalgorithm," Journal of Civil Engineering and Management, 14(3), pp. 147-154,2008.
 MathWorks. MATLAB User's manual. What Is the Genetic algorithm. MathWorks, 2011.
 J. Sliseris, K. Rocens, "Rational structure of panel with curved plywood ribs," World Academy of Science, Engineering and Technology, 76, pp. 317-323.
R. Walther, B. Houriet, W. Isler, P. Moia, J. F. Klein, Cable Stayed
Bridges. Second Edition. London: Thomas Telford, 1999, 236 p.
T. Grigorjeva, A. Juozapaitis, Z. Kamaitis, "Static analyses and
simplified design of suspension bridges having various rigidity of
cables," Journal of Civil Engineering and Management, 16(3), pp. 363-
T. Grigorjeva, A. Juozapaitis, Z. Kamaitis, A. Paeglitis, "Finite element
modeling for static behavior analysis of suspension bridges with varying
rigidity of main cables," The Baltic Journal of Road and Bridge
Engineering, 3(3), pp. 121-128, 2010.
W. F. Chen, E. M. Lui, Handbook of structural engineering. New York: CRC Press, 2005, 625 p.
W. F. Chen, L. Duan, Bridge Engineering Handbook. New York: CRC
Press LLC, 2000, 452 p.
Н. М. Кирсанов, Висячие системы повышенной жесткости
"Suspension Structures with Increased Stiffness". Москва: Стройиздат.,
1973, 116 c.