PSI - Issue 22

Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 22 (2019) 194–200

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers optimization on the filament winding patterns of the middle layer. The experiment re ult shows the new hybrid structure pipeline can bear the pressure of 17 MPa and the axial loa ing of 210 kN, and the w rking requirements of concret pumping can be satisfied. The test result indicates that the hybrid structure pipeline reduces 43% mass compared with the traditional double-layer steel pipe, and also the service life is 50% increased so as to the explosion-proof safety performance of concrete pump trucks is obviously improved. © 2019 The Authors. Publ shed by Elsev er B.V.This is an open access article u er th CC BY-NC-ND li ens (http://cr a ivecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organize s First International Symposium on Risk and Safety of Complex Structures and Components Design of CFRP-steel hybrid structure pipeline for concrete pumping under ultrahigh pressure Lunwen Guo, Yanbin Liu * , Xiaoteng Wang*, Ling Fu, Kaige Jiang State Key Laboratory of Construction Machinery, Zoomlion Heavy Industry Science and Technology Co., Ltd., #361 South Yinpen Road, Changsha 410013, China Abstract The pipeline is the main channel for concrete pumping in construction, and lightweight, safe, long service life pipeline is very important for concrete pump trucks. This paper presents the design and experimental study on hybrid structure of carbon fiber reinforced polymer (CFRP) filament-winded strengthened circular long steel pipe. The filament-winded CFRP contains three layers: the inner layer for stress sharing of brittle steel tube, the middle layer for connecting to ductile steel flanges and the outer layer for explosion-proof and protection. With calculation of the hybrid structure stress, the design guideline of inner and outer layer CFRP is presented. Based on the design and test of the connection structure between pipe flange and CFRP, this paper conducted an optimization on the filament winding patterns of the middle layer. The experiment result shows the new hybrid structure pipeline can bear the pressure of 17 MPa and the axial loading of 210 kN, and the working requirements of concrete pumping can be satisfied. The test result indicates that the hybrid structure pipeline reduces 43% mass compared with the traditional double-layer steel pipe, and also the service life is 50% increased so as to the explosion-proof safety performance of concrete pump trucks is obviously improved. First International Symposium on Risk and Safety of Complex Structures and Components Design of CFRP-steel hybrid s ucture pipelin for concrete pumping under ultrahigh pressure Lunwen Guo, Yanbin Liu * , Xiaoteng Wang*, Ling Fu, Kaige Jiang State Key Laboratory of Construction Machinery, Zoomlion Heavy Industry Science and Technology Co., Ltd., #361 South Yinpen Road, Changsha 410013, China Abstract The pip line is the main channel for concrete pumpi g in const uction, and lightw ight, safe, long service life p pelin is v y important for c ncrete pump trucks. This paper presents the design and exp rimen al study on hybrid structure of ca bon fibe reinf rced olymer (CFRP) filamen -winded strengthened circular long steel pipe. Th filament-winded CFRP contains thr e layers: the inn r layer for stress sharing of brittl steel tube, the m ddle layer for conn cting to ductile steel flanges and th outer lay r for explosion-pro f and protection. W th c lculati n of the hybrid st ucture str ss, the d ign guideline of inner an outer layer CFRP is presented. Ba ed on the design test of the con ection structure between pipe flange and CFRP, this paper conducted an Keywords: CFRP; Concrete pumping pipe; Connection structure; Filament winding patterns; Strengthening;

Keywords: CFRP; Concrete pumping pipe; Connection structure; Filament winding patterns; Strengthening;

* Corresponding author. Tel.: +86 731 88928125. E-mail address: liuyb@zoomlion.com * Corresponding author. Tel.: +86 731 88928125. E mail address: liuyb@z omlion.com

2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 2452 3216 © 2019 The Autho s. Published by Elsevier B.V.This is an open acc ss rticle under the CC BY-NC-ND license (http://c ativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 10.1016/j.prostr.2020.01.025