The main features of the three structural forms of the canopy

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Comparative Analysis Of The Structure Of Gas
Station Canopy
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Content
Preface
?. The main features of the three structural
forms of the canopy
?. Covering area and eaves height of 3 types of
structure
??Economic Analysis of Three Kinds of Structure
Type Canopy
??Concluding comments
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Preface

• There are mainly three common structural forms of
  gas station canopies

1. Steel Structure Canopy 2. Space Frame
structure canopy 3. Concrete Structure
Canopy
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1. The main features of the three structural
types of canopies

• The cantilevered steel beams around the steel
  structure can be made into a variable
  cross-section form, which not only saves the
  amount of steel used, but also reduces the height
  of the eaves around the canopy, making the canopy
  look thinner, more transparent and brighter.
• Disadvantages Relative to the grid structure,
  the shape of the section steel structure is
  generally simpler, and the structural span is
  relatively small the relative grid structure has
  a larger dead weight and a higher amount of steel.

Single-row single-pillar through-type steel
structure canopy plan layout
Sectional view of single-row single-pillar
through-type steel structure canopy
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2. The main features of the three structural
types of canopies
2. The main features of the grid structure
canopy The grid structure is a space-linked
structure, and the rods are mainly subjected to
axial force, and the way of force transmission is
simple and convenient The cross-section size is
relatively small, and these spatially
intersecting rods support each other, which
organically combines the stressed rods with the
supporting system, which is light in weight,
strong in rigidity, good in integrity, and good
in seismic performance Simple construction and
installation grid rods and nodes are easy to
finalize and commercialize, and can be
mass-produced in factories, which is conducive to
improving production efficiency The layout of the
grid frame is flexible, and the roof is flat,
which is conducive to ceiling, installation of
pipes and equipment
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3. The main features of the three structural
types of canopies

• It is suitable for structures with various spans,
  especially for complex plane shapes.
• The architectural shape of the grid frame is
  light, beautiful and generous, which is
  convenient for construction processing and
  decoration.
• The theory of grid structure design has been
  relatively mature after years of research and
  practice.
• The disadvantage is that the number of rods is
  large, which is susceptible to oil and gas
  corrosion. The later maintenance workload is
  large, and the high-altitude installation
  workload is large when the span is large, the
  height of the eaves is high.

Layout plan of bolted ball net frame structure
cover
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1. The main features of the three structural
types of canopies

• Construction procedures such as formwork, tying
  of steel bars, concrete pouring, concrete
  maintenance, and mold removal are required due
  to the use of wet work, the workload is generally
  large and the construction period is long.
• The surface of the concrete generally needs to be
  polished, and the surface appearance is not good.
  Generally, pillar packaging and eaves packaging
  are required.
• Due to its greater structural rigidity, it has
  better typhoon resistance.
• If the gas station is relocated, the above-ground
  structure cannot be reused.

Reinforced concrete structure canopy plan
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3. Economic analysis of 3 kinds of structural
canopies
NO structure type Area m2 Structure weight kg/m2 Cover 10,000 yuan Unit price of canopy structure yuan/m2 Column foundation 10,000 yuan Column packaging (ten thousand yuan) Eaves Package Logo Comprehensive unit price of packaging with eaves surface RMB/m2
1 steel structure 200 35 9.65 482.50 4.80 Adopt square tube without packaging 2.89 1.83 958.64
2 steel structure 400 35 19.30 482.50 9.60 Adopt square tube without packaging 4.68 1.83 885.37
3 steel structure 600 40 31.80 530.00 7.20 Adopt square tube without packaging 7.68 2.4 817.97
4 space frame 200 30 7.90 395.00 4.60 2.13 3.62 2.13 1019.01
5 space frame 400 25 15.80 395.00 9.20 4.27 5.86 2.13 931.35
6 space frame 600 23 22.52 375.40 6.00 3.41 7.68 2.4 700.27
7 Concrete structure 400 22.23 555.68 7.08 6.83 5.86 1.83 924.83
8 Concrete structure 600 27.09 451.54 13.20 5.12 5.91 2.4 809.97
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4. Concluding comments

• From an economic point of view the three
  structural forms are greatly affected by the
  area. When the area exceeds 400 square meters,
  the grid structure is relatively the most
  economical, followed by the steel structure, and
  finally the concrete structure.
• From the appearance image the height of the
  eaves of the light steel structure is small, and
  it is light and beautiful.
• From the perspective of later maintenance and
  repair light steel structure is better than grid
  structure and concrete structure.
• From the perspective of construction quality
  control the grid structure has many nodes and
  rods, and the light steel structure is better
  than the grid structure.
• From the perspective of structural safety
  analysis the concrete structure is good (but not
  good in other aspects), followed by the steel
  structure, and the grid structure again.
• From the aspect of construction period factory
  processing of section steel structure and grid
  structure, on-site construction of concrete
  structure, short on-site construction period of
  section steel structure and grid structure.
• In summary, when the area is less than 400 square
  meters, especially when the canopy is a
  pass-through type, considering the safety of the
  structure, life span, and later maintenance, the
  canopy eaves surface is light and thin (600mm or
  800mm), and the image is good. Sectional steel
  structure is the ideal choice.