Title:
CRACK WIDTH CALCULATION METHOD AND SYSTEM FOR ULTRA-HIGH-PERFORMANCE CONCRETE FLEXURAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2024/066420
Kind Code:
A1
Abstract:
Disclosed in the present invention are a crack width calculation method and system for an ultra-high-performance concrete flexural member. The method comprises: acquiring rebar stress σss of a crack position of an ultra-high-performance concrete flexural member, acquiring a distance c from an outer edge of a longitudinally tensile rebar at the outermost layer to the bottom of a tensile zone, acquiring an effective reinforcement ratio ρte of the longitudinally tensile rebar, and on the basis of said obtained parameters, obtaining a maximum crack width wsmax of a rebar position of the ultra-high-performance concrete flexural member; and acquiring a section effective height h0, a section compression zone height x0 and a section tensile elastic zone height x' of the ultra-high-performance concrete flexural member, and by means of taking into account the maximum crack width wsmax at the rebar position of the ultra-high-performance concrete flexural member, calculating a maximum crack width wtmax= wsmax•(h-x0-x')/(h0-x0-x') of the surface of the ultra-high-performance concrete flexural member. The present invention can provide reference for structural design and crack width calculation of ultra-high-performance concrete flexural members, and has high engineering application value.
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Inventors:
QIU MINGHONG (CN)
SHAO XUDONG (CN)
ZHAO XUDONG (CN)
LI PANPAN (CN)
TAO ZHENYU (CN)
SHAO XUDONG (CN)
ZHAO XUDONG (CN)
LI PANPAN (CN)
TAO ZHENYU (CN)
Application Number:
PCT/CN2023/096659
Publication Date:
April 04, 2024
Filing Date:
May 26, 2023
Export Citation:
Assignee:
UNIV HUNAN (CN)
International Classes:
G06F17/10
Foreign References:
| CN115270048A | 2022-11-01 | |||
| CN106872259A | 2017-06-20 | |||
| JP2009019472A | 2009-01-29 |
Other References:
QIU, MINGHONG ET AL.: "Calculation method for crack width of reinforced UHPC flexural components", CHINA CIVIL ENGINEERING JOURNAL, vol. 53, no. 10, 31 October 2020 (2020-10-31), ISSN: 1000-131X
LI, ZHAO: "Bending Performance Test and Finite Element Analysis of UHPC-NC Composite Girder Bridge", ENGINEERING SCIENCE AND TECHNOLOGY Ⅱ, CHINA MASTER'S THESES FULL-TEXT DATABASE (MONTHLY), 15 January 2019 (2019-01-15), ISSN: 1674-0246
SHAO, XUDONG: "Experimental study and crack width calculation of steel-UHPC lightweight composite deck structure", CHINA CIVIL ENGINEERING JOURNAL, vol. 52, no. 3, 31 March 2019 (2019-03-31), pages 61 - 73, ISSN: 1000-131X
LI, ZHAO: "Bending Performance Test and Finite Element Analysis of UHPC-NC Composite Girder Bridge", ENGINEERING SCIENCE AND TECHNOLOGY Ⅱ, CHINA MASTER'S THESES FULL-TEXT DATABASE (MONTHLY), 15 January 2019 (2019-01-15), ISSN: 1674-0246
SHAO, XUDONG: "Experimental study and crack width calculation of steel-UHPC lightweight composite deck structure", CHINA CIVIL ENGINEERING JOURNAL, vol. 52, no. 3, 31 March 2019 (2019-03-31), pages 61 - 73, ISSN: 1000-131X
Attorney, Agent or Firm:
CHANGSHA ZONEYOUNG INTELLECTUAL PROPERTY AGENCY(GENERAL PARTNERSHIP) (CN)
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