The Experts below are selected from a list of 4506 Experts worldwide ranked by ideXlab platform
Steffen Janetzko - One of the best experts on this subject based on the ideXlab platform.
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the sling Anchorage Approach to anchor the full load bearing capacity of pin loaded straps
Composite Structures, 2017Co-Authors: Bernd Zwingmann, Yue Liu, Mike Schlaich, Steffen JanetzkoAbstract:Abstract Tension members are a promising application for carbon fibre reinforced polymers (CFRP) in civil engineering. Anchoring CFRP tension members is a significant challenge due to their relatively low strength and low Young’s modulus in the transverse direction. The laminated loop Anchorages of pin-loaded straps are strong and lightweight force locking connections. However, the load bearing capacity of those Anchorages is limited to about 70 % of the tension members’ breaking load due to the superposition of tension and bending stress at the pin. In this paper, an alternative design for pin-loaded straps (the sling Anchorage) is proposed that increases the load bearing capacity up to 100 %. This increase is predicted using a theoretical Approach from the literature. Numerical and experimental results are presented to characterize the structural behaviour of the sling Anchorage. The experimental results show that the sling Anchorage can achieve the predicted load bearing capacity. Furthermore, a manufacturing method that allows forming the sling Anchorage at the ends of parallel CFRP tapes (or pultruded profiles) is also introduced.
Bernd Zwingmann - One of the best experts on this subject based on the ideXlab platform.
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the sling Anchorage Approach to anchor the full load bearing capacity of pin loaded straps
Composite Structures, 2017Co-Authors: Bernd Zwingmann, Yue Liu, Mike Schlaich, Steffen JanetzkoAbstract:Abstract Tension members are a promising application for carbon fibre reinforced polymers (CFRP) in civil engineering. Anchoring CFRP tension members is a significant challenge due to their relatively low strength and low Young’s modulus in the transverse direction. The laminated loop Anchorages of pin-loaded straps are strong and lightweight force locking connections. However, the load bearing capacity of those Anchorages is limited to about 70 % of the tension members’ breaking load due to the superposition of tension and bending stress at the pin. In this paper, an alternative design for pin-loaded straps (the sling Anchorage) is proposed that increases the load bearing capacity up to 100 %. This increase is predicted using a theoretical Approach from the literature. Numerical and experimental results are presented to characterize the structural behaviour of the sling Anchorage. The experimental results show that the sling Anchorage can achieve the predicted load bearing capacity. Furthermore, a manufacturing method that allows forming the sling Anchorage at the ends of parallel CFRP tapes (or pultruded profiles) is also introduced.
Yue Liu - One of the best experts on this subject based on the ideXlab platform.
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the sling Anchorage Approach to anchor the full load bearing capacity of pin loaded straps
Composite Structures, 2017Co-Authors: Bernd Zwingmann, Yue Liu, Mike Schlaich, Steffen JanetzkoAbstract:Abstract Tension members are a promising application for carbon fibre reinforced polymers (CFRP) in civil engineering. Anchoring CFRP tension members is a significant challenge due to their relatively low strength and low Young’s modulus in the transverse direction. The laminated loop Anchorages of pin-loaded straps are strong and lightweight force locking connections. However, the load bearing capacity of those Anchorages is limited to about 70 % of the tension members’ breaking load due to the superposition of tension and bending stress at the pin. In this paper, an alternative design for pin-loaded straps (the sling Anchorage) is proposed that increases the load bearing capacity up to 100 %. This increase is predicted using a theoretical Approach from the literature. Numerical and experimental results are presented to characterize the structural behaviour of the sling Anchorage. The experimental results show that the sling Anchorage can achieve the predicted load bearing capacity. Furthermore, a manufacturing method that allows forming the sling Anchorage at the ends of parallel CFRP tapes (or pultruded profiles) is also introduced.
Mike Schlaich - One of the best experts on this subject based on the ideXlab platform.
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the sling Anchorage Approach to anchor the full load bearing capacity of pin loaded straps
Composite Structures, 2017Co-Authors: Bernd Zwingmann, Yue Liu, Mike Schlaich, Steffen JanetzkoAbstract:Abstract Tension members are a promising application for carbon fibre reinforced polymers (CFRP) in civil engineering. Anchoring CFRP tension members is a significant challenge due to their relatively low strength and low Young’s modulus in the transverse direction. The laminated loop Anchorages of pin-loaded straps are strong and lightweight force locking connections. However, the load bearing capacity of those Anchorages is limited to about 70 % of the tension members’ breaking load due to the superposition of tension and bending stress at the pin. In this paper, an alternative design for pin-loaded straps (the sling Anchorage) is proposed that increases the load bearing capacity up to 100 %. This increase is predicted using a theoretical Approach from the literature. Numerical and experimental results are presented to characterize the structural behaviour of the sling Anchorage. The experimental results show that the sling Anchorage can achieve the predicted load bearing capacity. Furthermore, a manufacturing method that allows forming the sling Anchorage at the ends of parallel CFRP tapes (or pultruded profiles) is also introduced.
Abdulaziz Alaskar - One of the best experts on this subject based on the ideXlab platform.
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RC beam strengthening using hinge and Anchorage Approach
Results in Materials, 2020Co-Authors: Y.h. Mugahed Amran, Mohamed El-zeadani, M.r. Raizal Saifulnaz, Rayed Alyousef, Hisham Alabduljabbar, Fahed Alrshoudi, Abdulaziz AlaskarAbstract:Abstract Retrofitting of existing structures using adhesively bonded plates has been a major growth area in civil engineering and has gained well-deserved popularity over the past few years. This strengthening technique is in line with sustainable practices in construction and can be used to preserve eminent structures of historical or cultural values. This study aims to present an ideal design model for strengthening reinforced concrete elements using the hinge and Anchorage design philosophies for retrofitting and plating existing structures. This includes a check on the intermediate crack (IC), critical diagonal crack (CDC), and plate end (PE) debonding mechanisms. The results of a theoretical model for an FRP plated reinforced concrete beam element were presented, and the findings showed that plating increased the shear at the datum point to cause a diagonal crack by 46.7%. The increase in moment capacity due to plating the hogging region was 64.3% while allowing for 30% moment redistribution from the sagging region to the hogging region. The accompanying increase in uniformly distributed load due to 30% moment redistribution was 42.8%. The results of the theoretical model were compared with previous design models for IC debonding to which it has been shown that following the Anchorage Approach, a higher strain in the plate may be allowed as compared to the hinge Approach. In addition to the theoretical model presented, analysis on an FRP plated RC beam and slab were also presented to show the effect of different plate widths on the moment capacity and PE moment capacity.