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发表时间：2022-10-10

发表刊物：大连理工大学学报

期号：6

页面范围：897-901

ISSN号：1000-8608

摘要：Based on the experiments of 8 composite concrete inverted T-beams, crack resistance in negative moment area of the beams reinforced steel fiber self-stressing concrete layer was investigated. The test results obviously indicate that the composite layers enhance the cracking moments 44. 9% more than that of common concrete layers, though its height is only 13.9% of the cross section height. Meanwhile according to the existing theoretical models, a procedure to determine the self-stress is supplied and a formula which evaluates the crack resistance of composite T-beams in negative moment area is deduced, and the calculated results agree well with the test results.

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