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Anonymous users2024-02-09Summary of road and bridge construction calculations:
This manual closely combines the characteristics of road and bridge construction calculations, and arranges the content of each chapter in line with the guiding ideology of science, standardization, practicality and operability. The book mainly includes construction lofting and earthwork calculation, road engineering, bridge and culvert and tunnel engineering, construction organization design and calculation, four parts of a total of 23 chapters, mainly in the form of charts, combined with engineering and technical characteristics, and strive to provide engineering and technical personnel with a set of concise and practical construction calculation reference materials, in order to achieve the purpose of advanced technology, economic reasonableness, safety and reliability and promote scientific and technological progress. The manual also contains basic mathematical formulas, tables for static calculation of structures, and tables for calculation of common construction structures.
Table of contents: Part 1 Construction Lofting and Earthwork Calculations.
Chapter 1 Construction Lofting and Surveying.
Chapter 2 Earthworks.
Chapter 3 Blasting Works.
Part 2 Road Works.
Chapter 4 General Subgrade Engineering.
Chapter 5 Special Subgrade Works.
Chapter 6 Retaining Wall Calculations.
Chapter 7 Pavement Engineering.
Chapter 3 Bridges, culverts and tunnel engineering.
Chapter 8 Formwork Engineering.
Chapter 9 Masonry and Concrete Works.
Chapter 10 Reinforcement Engineering.
Chapter 11 Foundation and Substructure Construction Calculations.
Chapter 12 Calculation of Steel-Timber Structures.
Chapter 13 Stent Calculations.
Chapter 14 Calculation of cable hoisting construction.
Chapter 15 Bridge Erection and Installation Calculations.
Chapter 16 Jacking Construction Calculation of Prestressed Concrete Continuous Beams Chapter 17 Calculation of Rotating Construction.
Chapter 18 Construction Calculations of Cervical Skeleton Arch Bridges.
Chapter 19 Calculation of Suspension Bridge Construction.
Chapter 20 Culvert Engineering.
Chapter 21 Tunnelling Works.
The fourth part of the construction organization design.
Chapter 22 Basic content and methods of construction organization design.
Chapter 23 Network Planning Techniques.
Appendix 1 Basic Formulas of Common Mathematics.
Appendix 2 Table for Structural Static Calculation.
Appendix 3 Table for Calculation of Common Construction Structures.
The specific address is in: "Road and Bridge Pass, Professional Road and Bridge Construction Technology Exchange Community" in the internal information section**, you can also directly enter in the search bar on the home page: "Road and Bridge Construction Calculation Manual" to enter the following page.
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Anonymous users2024-02-08The calculation formula is as follows: the width of the cable tray is divided into electric Chang cover Liyou Xunyu cable and control cable, and the calculation formula is different: the above formula can be used for power cables, and the formula can be used for control cables:
b=sh=s0 40% (s=s0 40%), where s0=n1*s1+n2*s2+n3*s3+.n1、n2、n3...is the number of corresponding cables; s1、s2、s3...
is the cross-sectional area of each cable (calculated according to the outer diameter of the cable): s - cross-sectional area of the bridge space h - the clear height of the bridge space. Your calculation method and formula are correct, but the calculation method of the cable diameter is incorrect, and it should be more accurate.
The square of the radius of the wire (mm) The number of strands, for example, 48 strands in square meters (the radius of each strand is in millimeters) square meters.
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Anonymous users2024-02-07The calculation formula is as follows: cable tray.
The width is divided into power cable and control cable, and the calculation formula is different: the above formula can be used for power cable, and the formula can be used for control cable: b=s h=s0 40% (s=s0 40%), where s0=n1*s1+n2*s2+n3*s3+.
n1、n2、n3...is the number of hail of the corresponding cable; s1、s2、s3...is the cross-sectional area of each cable (calculated according to the outer diameter of the cable):
s – the cross-sectional area of the bridge space. h- Clear height of the bridge space. Your calculation method and formula are correct, it's just that the calculation method of the cable diameter is incorrect, it should be more accurate.
The square (mm) of the wire radius The number of strands.
The method and calculation formula of the bridge elbow are as follows: take 15cmx08 from the side of the bridge, draw a point at the bottom of the bridge, divide the distance equally, and then connect the two points into a 45° isosceles triangle.
The other side uses the same method)2, then cut off the two corners to form a 45-degree bend, then use the height 141 to be made as the innermost vertex and draw a triangle with the opposite direction of the previous direction of the silver sail. 3 is a 45° zigzag bend, and 90° bending should be used. Draw a triangle twice on the side you're doing.
For example, if you want to make a horizontal elbow with 400x150, you can cut two corners of 400x2. If you want to make a vertical elbow, you should use a 150x2 algorithm. When the ambient temperature changes, the steel cable tray will expand and contract.
Outdoor pallets are greatly affected by temperature. For example, if the maximum temperature of the environment is 40 and the minimum temperature is -20, the maximum shrinkage of the cable tray is derived from the following formula: δt=112 10-6 60 degrees 1000mm2, from which it is concluded:
1) When the temperature difference is 60, δ 0
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Anonymous users2024-02-06The first part of the construction lofting and earthwork calculation.
Chapter 1 Construction Lofting and Surveying.
Chapter 2 Earthworks.
Chapter 3 Blasting Works.
Part 2 Road Works.
Chapter 4 General Subgrade Engineering.
Chapter 5 Special Subgrade Works.
Chapter 6 Retaining Wall Calculations.
Chapter 7 Pavement Engineering.
Chapter 3 Bridges, culverts and tunnel engineering.
Chapter 8 Formwork Engineering.
Chapter 9 Masonry and Concrete Works.
Chapter 10 Reinforcement Engineering.
Chapter 11 Foundation and Substructure Construction Calculations.
Chapter 12 Calculation of Steel-Timber Structures.
Chapter 13 Stent Calculations.
Chapter 14 Calculation of cable hoisting construction.
Chapter 15 Bridge Erection and Installation Calculations.
Chapter 16 Jacking Construction Calculation of Prestressed Concrete Continuous Beams Chapter 17 Calculation of Rotating Construction.
Chapter 18 Construction Calculations of Cervical Skeleton Arch Bridges.
Chapter 19 Calculation of Suspension Bridge Construction.
Chapter 20 Culvert Engineering.
Chapter 21 Tunnelling Works.
The fourth part of the construction organization design.
Chapter 22 Basic content and methods of construction organization design.
Chapter 23 Network Planning Techniques.
Appendix 1 Basic Formulas of Common Mathematics.
Appendix 2 Table for Structural Static Calculation.
Appendix 3 Table for Calculation of Common Construction Structures.
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Anonymous users2024-02-05"Road and Bridge Construction Calculation Manual" has strong operability and practicability, suitable for road and bridge construction units and management personnel and management personnel to read, can also be used as a reference book for teachers and students of road and bridge majors in colleges and universities.
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