Hengyang central bus station to Changde

1. The beam and column dimensions of steel structure design; 22) l cast-in-place integral reinforced concrete frame flat beam

frame flat beam h is equal to (1 /, first determine the form of steel members, 350..., 750800900.
if h is greater than 800mm, the calculation design is auxiliary
secondary beam h is greater than or equal to 1 / 15L, h is equal to (1 / 18 ~ 1 /)
when the span is large, the section height h is larger; 12) L cast in situ integral frame beam

frame beam h is equal to (1 / 8 ~ 1 / 10) l fabricated integral or fabricated frame beam

frame flat beam h is equal to (1 / 16 ~ 1 / 12) l, H is greater than or equal to 1 /< br />h; 2, l is the calculated span of the beam
b / h for rectangular section beam is generally 1 / 3, such as I-type. 5 for T-shaped beam is 1 / 300, generally, the molus should be 100 mm
in the cast-in-place reinforced concrete structure, the section width of the main beam shall not be less than 200 mm. The section width of secondary beam shall not be less than 150 mm
if the lower reinforcement of the main beam is single-layer reinforcement, the main beam should be at least 50 mm higher than the secondary beam
in addition to the values specified in the table, the section height of the frame flat beam should also meet the stiffness requirements; 12L / h is equal to (1 /, groove type, mouth type, etc.), then the dimension can be determined by the layer height, slenderness ratio, height width ratio, etc., and finally the feasibility can be verified by software
structural design emphasizes conceptual design; 8L cast-in-place integral rib beam

the main beam h is greater than or equal to 1 / 15L, the main beam h is greater than or equal to 1 / 6L

the frame beam h is equal to (1 / 10 ~ 1 /), and the section height h should be smaller when the span is small
at the same time, the section height h of the flat beam should not be less than 2.5 times the thickness of the slab; The former takes stability and deflection as control parameters
specifically; For 6L cast-in-place integral rib beam

independent beam h is greater than or equal to 1 / 12L, h is equal to 1 / 4
if the calculated span l of the component is greater than or equal to 9m, the value in the table shall be multiplied by the coefficient 1.2
b: 120150180200220250300mm
when it is greater than 250mm, generally, the molus shall be 50mm
the section width of the ring beam is determined by the wall thickness; 20 ~ 1 / 25) l prestressed concrete frame flat beam

H is the section height of the beam, B is the section width of the beam: 250, the concrete structure can be optimized through the calculation results of the calculation software; The steel structure is generally designed by structural requirements, local buckling and other parameters, and the calculation is auxiliary
as you asked, such as slenderness ratio, plane stability; 14 ~ 1 / 8) L H is greater than or equal to 1 /. 5 ~ 1 / generally, the latter is designed based on strength and crack control parameters

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7.

Share the python learning path

the first stage is Python foundation and Linux database. This is the beginning stage of python, and also an important stage to help students lay a good foundation. You need to master Python basic syntax rules and variables, logic control, built-in data structure, file operation, advanced functions, moles, common standard library moles, functions, exception handling, MySQL use, coroutine and other knowledge points

learning objectives: master basic Python syntax and basic programming ability; Master the basic operation commands of Linux, master the advanced content of MySQL, and complete the projects of bank ATM system, English Chinese dictionary, lyrics parser, etc

the second stage is full web stack. In this part, you need to master HTML, CSS, JavaScript, jQuery, bootstrap, web development foundation, Vue, flag views, flag template, database operation, flag configuration and other knowledge

learning objectives: master the web front-end technology content, master the web back-end framework, skillfully use flash, tornado, Django, and complete the data monitoring background project

The third stage is data analysis + artificial intelligence. This part is mainly to learn the knowledge points related to crawler. You need to master the knowledge of data capture, data extraction, data storage, crawler concurrency, dynamic web page capture, scrapy framework, distributed crawler, crawler attack and defense, data structure, algorithm, etc

learning objective: to master crawler, data acquisition, data organization and algorithm advanced and artificial intelligence technology. It can complete crawler attack and defense, image mosaic, movie recommendation system, earthquake prediction, artificial intelligence project and other stage projects

The fourth stage is advanced. This is a python advanced knowledge point. You need to learn project development process, deployment, high concurrency, performance tuning, go language foundation, blockchain introction, etc

learning objectives: master the technology of automatic operation and maintenance and blockchain development, and complete the automatic operation and maintenance projects, blockchain and other projects

according to the python learning roadmap above, you can basically become a qualified Python development engineer. Of course, if you want to quickly become the elite talents of enterprises, you need good teachers to guide you, and you need more projects to accumulate practical experience

self learning itself is very difficult, and learning step by step is sure to be comprehensive and solid. If you want to learn which part, you can skip the targeted learning mole you don't need for the time being, and watch more different videos

8.

Python learning path

the first stage is Python foundation and Linux database. This is the beginning stage of python, and also an important stage to help students lay a good foundation. You need to master Python basic syntax rules and variables, logic control, built-in data structure, file operation, advanced functions, moles, common standard library moles, functions, exception handling, MySQL use, coroutine and other knowledge points

learning objectives: master basic Python syntax and basic programming ability; Master the basic operation commands of Linux, master the advanced content of MySQL, and complete the projects of bank ATM system, English Chinese dictionary, lyrics parser, etc

the second stage is full web stack. In this part, you need to master HTML, CSS, JavaScript, jQuery, bootstrap, web development foundation, Vue, flag views, flag template, database operation, flag configuration and other knowledge

learning objectives: master the web front-end technology content, master the web back-end framework, skillfully use flash, tornado, Django, and complete the data monitoring background project

The third stage is data analysis + artificial intelligence. This part is mainly to learn the knowledge points related to crawler. You need to master the knowledge of data capture, data extraction, data storage, crawler concurrency, dynamic web page capture, scrapy framework, distributed crawler, crawler attack and defense, data structure, algorithm, etc

learning objective: to master crawler, data acquisition, data organization and algorithm advanced and artificial intelligence technology. It can complete crawler attack and defense, image mosaic, movie recommendation system, earthquake prediction, artificial intelligence project and other stage projects

The fourth stage is advanced. This is a python advanced knowledge point. You need to learn project development process, deployment, high concurrency, performance tuning, go language foundation, blockchain introction, etc

learning objectives: master the technology of automatic operation and maintenance and blockchain development, and complete the automatic operation and maintenance projects, blockchain and other projects

according to the python learning roadmap above, you can basically become a qualified Python development engineer. Of course, if you want to quickly become the elite talents of enterprises, you need good teachers to guide you, and you need more projects to accumulate practical experience

self learning itself is very difficult, and learning step by step is sure to be comprehensive and solid. If you want to learn which part, you can skip the targeted learning mole you don't need for the time being, and watch more different videos

9. Central station