Proof testing of a noncomposite floor system

1979 ◽  
Vol 6 (4) ◽  
pp. 634-639
Author(s):  
Ram S. Ghosh
Keyword(s):  
Maximum Stress ◽  
Concrete Slab ◽  
Critical Section ◽  
Bridge Structure ◽  
System Construction ◽  
Strain Measurements ◽  
Proof Testing ◽  
Service Load ◽  
Beam Bridge ◽  
Floor System

A suspended concrete slab in a noncomposite floor system construction exhibited cracking in the upper surface, which was considered to be aggravated by the movement of heavy steel wheeled trolleys. A critical section of the floor was carefully instrumented for deflection and strain measurements and readings were taken with the heaviest service load at locations for maximum stress. The results established that the resulting induced stresses were relatively small, well below the allowable working values, which confirmed the prognosis that the complete floor was acting as an I-beam bridge structure. Accordingly, the floor was considered adequate to carry the 23.5 ton (21.3 Mg) moving trolley load.

Composite floor system with cold‐formed trussed beams and prefabricated concrete slab

2020 ◽  
Vol 13 (1) ◽  
pp. 12-21
Author(s):  
Luiz Alberto Araújo de Seixas Leal ◽  
Eduardo de Miranda Batista
Keyword(s):  
Concrete Slab ◽  
Floor System

Deflections of a composite floor system

1983 ◽  
Vol 10 (2) ◽  
pp. 192-204 ◽  
Author(s):  
C. J. Montgomery ◽  
G. L. Kulak ◽  
G. Shwartsburd
Keyword(s):  
Case History ◽  
Concrete Slab ◽  
Steel Beam ◽  
History Of ◽  
Load Tests ◽  
Floor System ◽  
Creep And Shrinkage ◽  
Composite Floors

A case history of a steel beam – concrete slab composite floor system which had deflection serviceability problems is presented. Load tests carried out to assess the structural adequacy of the floor system are described. Practical methods for predicting elastic, creep, and shrinkage deflections of composite floors are summarized and recommendations for design are made.

Static and Dynamic Response Contrast Simulation of Long-Span Beam Bridge Subjected to Flowing Ice

2012 ◽  
Vol 594-597 ◽  
pp. 1573-1576
Author(s):  
Zhi Ping Bai ◽  
Xie Dong Zhang ◽  
Cheng Lin Han
Keyword(s):  
Finite Element Method ◽  
Yellow River ◽  
Bridge Structure ◽  
Deformation Effect ◽  
Soil Function ◽  
Action Mode ◽  
Long Span ◽  
Long Span Bridge ◽  
Static Action ◽  
Beam Bridge

According to pile-soil function and damper boundary condition influence by Finite Element Method, taking Bao-Shu yellow river extra long-span bridge as the project object, the deformation effect of the bridge subjected to flowing and melting ice in spring was analyzed considering static and dynamical action mode. The results revealed that the deformation from this kind of action is tittly small and the bridge structure is reliable and stable. Also the deformation effect of the pier from dynamic ice action is larger than static action. While for two or more piers, the results are reverse.Then the calculation and analysis have been put into design and construction stage.

Bridge Structure Detection Based on Load Test

2013 ◽  
Vol 438-439 ◽  
pp. 891-893
Author(s):  
Yan Zeng ◽  
Yong Zeng
Keyword(s):  
Working Condition ◽  
Load Test ◽  
Normal Operation ◽  
Bridge Structure ◽  
Continuous Beam ◽  
Loading Method ◽  
Structure Detection ◽  
Continuous Beam Bridge ◽  
Calculation Results ◽  
Beam Bridge

By the detection of a three spans continuous beam bridge, the detection loading method and arrangement of measuring points are discussed, the static and dynamic detection results such as the deflection, stress and inherent vibration frequency are comparative analyzed with those of theoretical calculation. Results show that the bridge is safe under actual working condition, which provides the basis for normal operation and maintenance of the bridge.

scholarly journals Konstruksi Pracetak Tahan Gempa Pada Rumah Susun Sewa Sederhana Universitas Muhammadiyah Malang

2012 ◽  
Vol 9 (1) ◽  
Author(s):  
Ratih Sarwendah Komala Dewi
Keyword(s):  
Reinforced Concrete ◽  
Concrete Slab ◽  
Reinforced Concrete Beams ◽  
Main Beam ◽  
Slab Thickness ◽  
System Construction ◽  
Reinforced Concrete Slab ◽  
The Cross ◽  
Precast Construction ◽  
Calculation Analysis

RUSUNAWA building of Muhammadiyah University of Malang with the precast construction system is much more profitable because the votes faster, cheaper, and efficient compared to the monolithic system construction. To re-planning is done (redesign) include precast components namely plates, beams, columns, and beam-column connection. Planning consists of, one-way reinforced concrete slab with dimensions 4.20m×2.50m×0.07m plus 0.05m is overtopping, reinforced concrete beams for the main beam 0.35m×0.40m and 0.30m×0.40m, column dimensions 0.40m×0.45m, and the connection used is a connection strands with grouting. Quality steel fy=1326Mpa strands, reinforcement quality BJTD screw 40, and fc=K400.The result of the calculation analysis, plates with a thickness of 12 cm consists of precast slab thickness of 7 cm and 5 cm thick overtopping the main reinforcement used D5-200 and the reinforcement for the D4-350, beam and main beam main reinforcement used and the cross bar 4D16 and f10-200mm, the column used and the cross bar reinforcement 6D22 and f10-400 mm. The connection is used, to column with strands 22 mm and length 920 mm, to block the distribution of 400 mm long 4D16. Connections in the grouting using Masterflow-95 on the columns and local casted on the beam-plate.Keywords: precast, plate, beams, columns, connections

scholarly journals Structural Behavior of Composite Floor System Using Cold-Formed Thin-Walled C Steel Channel Embedded Foam Concrete

2021 ◽  
Vol 11 (21) ◽  
pp. 9888
Author(s):  
Dianzhong Liu ◽  
Feng Fu ◽  
Wanjuan Liu
Keyword(s):  
Failure Modes ◽  
Concrete Slab ◽  
Structural Behavior ◽  
Test Results ◽  
Foam Concrete ◽  
Flexural Capacity ◽  
Composite Slab ◽  
New Type ◽  
Thin Walled ◽  
Floor System

In this paper, a new composite floor system using cold-formed thin-walled C steel channel embedment and a foam concrete slab is developed. This new type of floor system features lightweight, high fire-resistant, and high anti-corrosion features, and can be used for multi-story buildings, providing a promising new alternative floor system for the construction market. Two four-point bending tests were carried out to investigate the flexural capacity and failure modes of this new type of composite slab. Based on the test results, a nonlinear finite element model was developed using general software package ABAQUS. The model is validated using the test results. Using this model, parametric studies were performed to study the key parameters affecting the structural behavior of this new type of composite floor system. Different parameters such as density of the foam concrete, grade of the cold-formed thin-walled C steel channel embedment, and spacing of the cold-formed thin-walled C steel channel were investigated. Their contributions to the overall moment capacity and their effect on the failure modes of this type of composite slab were discovered. Based on experimental results and FE results, design formulas for ultimate flexural capacity of this new type of composite slabs were also developed which can accurately predict their flexural capacity.

scholarly journals Determination of the serviceability of bridge upper structures (Case study: Sangsang River bridge at Tohpati-Kusamba highway, Bali)

2019 ◽  
Vol 276 ◽  
pp. 01039
Author(s):  
I Nyoman Sutarja ◽  
Ida Bagus Rai Widiarsa ◽  
I Made Alit Karyawan Salain
Keyword(s):  
Concrete Slab ◽  
Test Method ◽  
Bridge Structure ◽  
Digital Tool ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Non Destructive ◽  
Concrete Girder

The serviceability of upper structures of the Sangsang River Bridge during the designed period has decreased due to several factors such as environmental influences affecting the physical condition of the bridge, as well as the load that exceeds the designed capacity. Sangsang River Bridge needs to be maintained during the serviceability period in order to function optimally, safely and comfortably. The maintenance of the bridge begins with the examination of the existing condition of the bridge by utilizing Non-Destructive Test method using UPV Pundit PLLink 500 Digital tool. The data collected was then analysed to find out the serviceability of bridge structure. The analysed results showed that the value of concrete slab density was 17.8 MPa and of the concrete girder was 18.1 MPa. This values were classified as a deficient criterion and therefore the serviceability needs to be increased. Recommendations for enhancing the bridge serviceability was strengthening using Fibre Reinforced Polymer (FRP). Using 2 Layer SEH-51A or equivalent 2 Layer of E-glass fibre was suggested for concrete slab, meanwhile the use of 2 Layer SCH-41 or equal to 2 Layer Carbon fibre was suggested for concrete girder.

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