(C) 2014 American Society of Civil Engineers.
#CONCRETE ENCASED DUCT BANK DESIGN SOFTWARE#
In addition to accuracy, the model has two further advantages: it only requires the basic material parameters (i.e., no arbitrary user-defined parameter such as the shear retention factor is required) and it can be directly implemented in the FE software ABAQUS.
Numerical results are in close agreement with test data, validating the model. A concrete damage plasticity model is proposed to capture the concrete-to-FRP bond behavior. This paper presents a simple but robust finite-element (FE) model for simulating the bond behavior in the entire debonding process for the single shear test. Comparatively, much less research has been concerned with numerical simulation, chiefly due to difficulties in the accurate modeling of the complex behavior of concrete. The FRP-to-concrete bond behavior has been extensively investigated experimentally, commonly using a single or double shear test of the FRP-to-concrete bonded joint. The bond behavior between FRP and concrete thus plays a crucial role in these structures. Debonding of FRP from the concrete substrate is a typical failure mode in such strengthened structures. The technique of externally bonding fiber-reinforced polymer (FRP) composites has become very popular worldwide for retrofitting existing reinforced concrete (RC) structures.
It is proposed that the vertical displacement of concrete duct bank can be set as the monitoring item to reveal its safety state, and the minimum curvature radius of longitudinal deformation profile obtained from vertical settlement at different locations can be computed and be taken as the control index. The mechanical properties of underlying soil play a more dominant role in the bearing capacity, mid-span vertical displacement and mid-span deflection of concrete duct bank. Both the test and numerical results indicated that the failure of concrete duct bank presented a distinct brittle pattern. And then numerical simulations were performed for the 1/4 part of real structure and a real-scale concrete duct bank respectively, to investigate the deformation and damage pattern of concrete structure and the wrapped inside conduits. This paper briefly presents an experimental study of concrete duct bank with a 1/4 part of real structure under a monotonic static loading, which was put into a soil box in the laboratory. We have the experience and tools to complete these projects safely and efficiently.Due to the shallow burial depth, the concrete duct bank for underground cables frequently encountered differential settlement, tilt and other damage like cracking when construction activity was carried out in the vicinity. These vaults protect the vital connections and controls for utility distribution.Ĭobalt has become a leader in the rehabilitation of existing vault roofs and walls, improving the strength and integrity of the existing vault, as well as corrosion protection.Ĭobalt can support a variety of telecommunication and wireless communication projects, which include the installation of pre-cast or cast in place foundations, underground duct installation, and tower installation.
#CONCRETE ENCASED DUCT BANK DESIGN INSTALL#
Whether it is precast or cast in place, Cobalt can install concrete vaults in every size and location for telecommunication, electrical or mechanical applications. Manhole, we can cut and remove a manhole frame and the surrounding road in minutes. Our crews can then build or rebuild a manhole around the wiring or duct bank without requiring an outage. Whether in the busiest of downtown areas or in rural areas, Cobalt has the experience to complete it safely and efficiently.Ĭobalt can remove an existing manhole without disturbing the existing conduit or wiring. Cobalt is an industry leader in the installation of direct bury and concrete encased duct bank systems.
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