Soil–steel structure design by the third edition of OHBDC

1992 ◽  
Vol 19 (4) ◽  
pp. 545-550 ◽  
Author(s):  
George Abdel-Sayed ◽  
Baidar Bakht ◽  
Ernest T. Selig
Keyword(s):  
Key Words ◽  
Steel Structure ◽  
Structure Design ◽  
Buckling Analysis ◽  
New Method ◽  
Highway Bridge ◽  
Dead Load ◽  
Design Code ◽  
The Third ◽  
Conduit Wall

The Ontario Highway Bridge Design Code (OHBDC) introduced in 1979 a new set of provisions for the design of soil–steel bridges. Some of these provisions have been revised in the third edition of OHBDC (1991) to reflect the outcome of research that has been conducted since. This paper presents details of these revisions and provides the reasons for their inclusion. In particular, a new method of calculating dead load thrust and improvement to the buckling analysis of the conduit wall are discussed. Key words: buckling, pipe-arch, soil–steel structure, thrust.

Visual C++-Based Algorithm Research and Software Development for Cold-Formed Thin-Wall Steel Sectional Properties of Arbitrary Section

2014 ◽  
Vol 889-890 ◽  
pp. 37-42
Author(s):  
Min Qian Zhang ◽  
Qi Lin Zhang ◽  
Zhi Guo Chang
Keyword(s):  
Exact Solution ◽  
Software Development ◽  
Steel Structure ◽  
Data File ◽  
Structure Design ◽  
Thin Wall ◽  
Design Code ◽  
Arbitrary Section ◽  
Calculation Module ◽  
Design Software

Current steel structure design software cannot calculate sectional properties of user-defined section of cold-formed thin-wall steel accurately. Since the sectional properties data given by design code has been implanted into corresponding modules of these software and the software disregard the radian of corner of steel, erroneous results will be generated if the user-defined sectional size doesn't match the sectional size of the data file implanted. According to Green's theorem, the author derived precise formulas for sectional properties of arbitrary section and developed software for calculation based on Visual C++ platform. The software which can calculate exact solution of sectional properties of arbitrary section has been verified by comparing results from various methods. This software can be used independently as a calculating tool and the calculation module can be implanted into other steel structure design software to make calculation for sectional properties of arbitrary section possible.

Canadian highway bridge evaluation: derivation of Clause 12 of CAN/CSA-S6-88

1992 ◽  
Vol 19 (6) ◽  
pp. 1007-1016 ◽  
Author(s):  
F. Michael Bartlett ◽  
Peter G. Buckland ◽  
D. J. Laurie Kennedy
Keyword(s):  
Key Words ◽  
Highway Bridges ◽  
Highway Bridge ◽  
Dead Load ◽  
Resistance Factors ◽  
Bridge Evaluation ◽  
Load And Resistance Factors ◽  
Practical Guidelines ◽  
New Criteria

Improvements to Clause 12 of CAN/CSA Standard S6-88 "Design of highway bridges" required the transformation of basic findings into a form suitable for use by evaluators. The number of dead load categories was reduced, and the rating equation was simplified. Rating factors calculated using the new criteria were checked against past practice. Practical guidelines for material grade identification and the evaluation of deteriorated components were developed. Three examples of the application of the provisions are included. Key words: calibration, codes (standards), evaluation, highway bridges, load and resistance factors, mean load method, safety.

Losses in partially prestressed concrete

1988 ◽  
Vol 15 (5) ◽  
pp. 890-899
Author(s):  
B. DeV. Batchelor ◽  
Jayanth Srinivasan ◽  
Mark F. Green
Keyword(s):  
Key Words ◽  
Prestressed Concrete ◽  
Effective Modulus ◽  
Highway Bridge ◽  
Design Code ◽  
Bridge Design ◽  
Prestress Losses ◽  
Concrete Members ◽  
Modulus Method

The calculation of prestress losses by the age-adjusted effective modulus method is analyzed and compared with the Ontario highway bridge design code predictions for partially prestressed concrete. Specifically, the effect of nonprestressed reinforcement on prestress losses is studied. The age-adjusted effective modulus method for calculating prestress losses is outlined, and plots of prestress losses versus partial prestressing ratio are presented and analyzed. It is shown that prestress losses decrease with increasing amounts of nonprestressed reinforcement. Also, the Ontario highway bridge design code expressions, which are intended for use with fully prestressed sections, are not suitable for use in the design of partially prestressed concrete members. Key words: concrete (prestress), design, partial prestressing, prestress losses.

Theoretical Analysis of Bending Capacity of U-Section Steel-Encased Concrete Composite Beams with the Full Connection Design

2011 ◽  
Vol 99-100 ◽  
pp. 327-331 ◽  
Author(s):  
Xue Jun Zhou ◽  
Ting Zhang
Keyword(s):  
Concrete Beams ◽  
Steel Structure ◽  
Composite Beams ◽  
Structure Design ◽  
Theoretical Formula ◽  
Design Code ◽  
Shear Connection ◽  
Bending Capacity ◽  
Connection Design ◽  
Good Agreement

The theoretical formula is proposed for cross section’s bending capacity of simply-supported U-section steel-encased concrete composite beams. The result shows that the theoretical formula is in good agreement with the experimental results. This paper concludes that the calculated values based on current steel structure design code of China are very close to the experimental ones. Therefore, this kind of composite beams can be analyzed based on the calculation methods of composite steel and concrete beams in steel structure design code, and it is accurate to calculate the bending capacity based on the assumption of complete shear connection.

Reply: Soil–steel structure design by the third edition of OHBDC

1993 ◽  
Vol 20 (1) ◽  
pp. 166-167 ◽  
Author(s):  
George Abdel-Sayed ◽  
Baidar Bakht ◽  
Ernest T. Selig
Keyword(s):  
Steel Structure ◽  
Structure Design ◽  
The Third

Soil–steel structure design by the Ontario Code: Part 1. General and geotechnical considerations

1981 ◽  
Vol 8 (3) ◽  
pp. 317-330 ◽  
Author(s):  
Cameran Mirza ◽  
Baidar Bakht
Keyword(s):  
Soil Structure ◽  
Steel Plate ◽  
Steel Structure ◽  
Steel Structures ◽  
Structure Design ◽  
Soil Structure Interaction ◽  
Design Code ◽  
Metallic Shell ◽  
Engineering Aspect ◽  
Soil Component

The paper presents an overview of the Ontario Highway Bridge Design Code provisions dealing with the design of soil–steel structures, which are composed of shells of corrugated steel plate, embedded in an envelope of engineered soil. In particular, the paper deals with the engineering aspect of the soil component of the structure. The soil–structure interaction is discussed in the context of arching of dead loads and the influence of soil properties on the ability of the metallic shell to sustain loads. Hydraulic, geotechnical, and other aspects of soil–steel structure design, such as durability and construction, are also briefly discussed.

The Calculation Method for Moment-Rotation Curve of T-Beam Joints in Semi-Rigid Connections

2014 ◽  
Vol 578-579 ◽  
pp. 201-209
Author(s):  
Wei Liu ◽  
Xiong Zhang
Keyword(s):  
Finite Element ◽  
Calculation Method ◽  
Rotation Curve ◽  
Steel Structure ◽  
Structure Design ◽  
Design Code ◽  
Steel Connection ◽  
Engineering Steel ◽  
The Moment ◽  
T Beam

Reference to the proposed research results and abroad specification, T-beam connection is widely used in engineering steel connection. Comparing with the finite element result, it has been verified that this method can effectively calculate the moment-rotation curve. So it can be a beneficial supplement to the steel structure design code of the T-beam connections.

Epidemias y Religión

2020 ◽  
pp. 49-81
Author(s):  
Bruno Van der Maat
Keyword(s):  
Pastoral Care ◽  
Key Words ◽  
Adverse Reactions ◽  
Religious Groups ◽  
Government Regulations ◽  
The Third ◽  
The Bible ◽  
The World ◽  
Ethical Reflections

The current pandemic has seen some adverse reactions from the most diverse religious groups all over the world to government regulations. After having described some of their manifestations, this contribution analyzes what the Bible and some post biblical (patristic and Talmudic) traditions say about illness and pandemics. As it is ascertained that these sources contain very limited material on these subjects, the third part of this article proposes some ethical reflections regarding the official response to the pandemic as well as some pastoral implications. Key Words: Pandemic, Religion, Bible, Talmud, Pastoral Care.

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