Shear Behavior of Joints in Precast Concrete Segmental Bridges

Büyüköztürk, Oral; Bakhoum, Mourad M.; Beattie, S. Michael

doi:10.1061/(asce)0733-9445(1990)116:12(3380)

Cited by 150 publications

(117 citation statements)

References 9 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…Figures 5, 6, 7 and 8 show the comparison of the shear capacity obtained from the estimation formula presented in this paper [5] with the formulas proposed by ATEP [1], AASHTO [2], Turmo [3] and Rombach [4], for 1, 3, 5 and 7 keys and depending on the prestressing stress.…”

Section: Discussion Of Resultsmentioning

confidence: 96%

“…To compare the estimations given by the ATEP formula [1], which are ultimate values, with the nominal values from the AASHTO formula [2], the ATEP estimations must be divided by the strength reduction factor from the AASHTO, whose value is 0.75. Figures 5, 6, 7 and 8 show the comparison of the shear capacity obtained from the estimation formula presented in this paper [5] with the formulas proposed by ATEP [1], AASHTO [2], Turmo [3] and Rombach [4], for 1, 3, 5 and 7 keys and depending on the prestressing stress.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…The use of multiple-keyed dry joints is very popular in prestressed segmental bridge construction due to speed of erection and independence of weather conditions, in contrast to epoxied joints (1,2).…”

Section: Introductionmentioning

confidence: 99%

“…In the American design codes, the formula proposed by AASHTO (13) separates the shear strength that is transmitted by the keys from the strength provided by the smooth surfaces in contact [2]:…”

Section: Introductionmentioning

confidence: 99%

“…Por otro lado, en la normativa americana, la formulación propuesta por la AASHTO (13) establece que la resistencia a cortante de las juntas secas con llaves se calcula como la resistencia del área con llaves más la resistencia de la parte plana de la junta [2]:…”

Section: Introductionunclassified

See 4 more Smart Citations

Influencia del número de llaves en la resistencia a cortante de juntas secas postensadas

Alcalde¹,

Cifuentes²,

Medina³

2013

Mater. construcc.

View full text Add to dashboard Cite

SUMMARYThe shear strength of dry joints plays an important role in the design of prestressed segmental structures. However, the formulations of different design codes do not conform to the behavior of multiple-keyed joints. This paper analyzes the fracture behavior of dry keyed joints under shear loading, focusing on the influence of the number of keys on the joint capacity and its average shear stress. It has been developed a finite element model of four different types of joints, with a number of keys varying between one and seven. The results show that the average shear stress transferred across the joint decreases with the number of keys but this effect is less appreciated as the prestressing stress increases. In this paper it is presented a formula of adjustment of the obtained numerical results including a factor with the dependence on the number of keys.

show abstract

Section: Discussion Of Resultsmentioning

confidence: 96%

Section: Discussion Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionunclassified

See 3 more Smart Citations

Influencia del número de llaves en la resistencia a cortante de juntas secas postensadas

Alcalde¹,

Cifuentes²,

Medina³

2013

Mater. construcc.

View full text Add to dashboard Cite

show abstract

Experimental study on the failure process of large shear key joints based on NDT methods

Li,

Casas,

Chen

et al. 2023

ce papers

View full text Add to dashboard Cite

Dry joints with keys are often used in precast concrete segmental bridges (PCSBs) to transfer shear stresses. Large dry joints with keys can often provide greater shear bearing capacity, which can meet the needs of rapid construction and simple assembly. This study focuses on the shear response of super‐sized dry joints with keys under direct shear. Various monitoring methods, including digital image correlation (DIC) and distributed optical fiber sensing (DFOS), were used to systematically study the stress process of large concrete keys. The results show that as the size of the key teeth increases, the shear bearing capacity and ultimate vertical displacement of the specimens also increase. DIC and DFOS techniques provide detailed information on key tooth failure, which is beneficial for subsequent stress analysis of shear keys.

show abstract

Effect of specimen thickness and coarse aggregate size on shear strength of single‐keyed dry joints in precast concrete segmental bridges

Jiang

Feng

Liu

et al. 2019

Structural Concrete

View full text Add to dashboard Cite

Failures of shear keys in precast concrete segmental bridges (PCSBs) have been attributed to fracture of concrete along the joints with shearing off the keys. The principal goal of this study is to investigate the effect of specimen thickness and coarse aggregate size on shear strength of single‐keyed dry joints in PCSBs, which are noticed by bridges designers in deciding box geometry and requiring the concrete constituents. In this paper, shear performance of match‐casting single‐keyed dry joints is assessed in terms of cracking shear strength, ultimate shear strength, residual shear strength, and failure modes. It was found that there tended to be slightly positive correlation between specimen thickness and ultimate shear strength, while the influence of coarse aggregate size was obscure. The measured shear capacity was compared with several provisions of design formulae.

show abstract

Shear Behavior of Joints in Precast Concrete Segmental Bridges

Cited by 150 publications

References 9 publications

Influencia del número de llaves en la resistencia a cortante de juntas secas postensadas

Influencia del número de llaves en la resistencia a cortante de juntas secas postensadas

Experimental study on the failure process of large shear key joints based on NDT methods

Effect of specimen thickness and coarse aggregate size on shear strength of single‐keyed dry joints in precast concrete segmental bridges

Contact Info

Product

Resources

About