CN111851880A - Integrally cooperative stress platform end non-column steel structure stair - Google Patents
Integrally cooperative stress platform end non-column steel structure stair Download PDFInfo
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- CN111851880A CN111851880A CN202010793349.0A CN202010793349A CN111851880A CN 111851880 A CN111851880 A CN 111851880A CN 202010793349 A CN202010793349 A CN 202010793349A CN 111851880 A CN111851880 A CN 111851880A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 168
- 239000010959 steel Substances 0.000 title claims abstract description 168
- 238000005452 bending Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/035—Stairways consisting of a plurality of assembled modular parts without further support
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Abstract
The invention discloses an integrally cooperative stress platform end part pillar-free steel structure stair which comprises four stand columns, ladder platforms, ladder sections and hanging columns, wherein one ends of the ladder platforms are connected to the two stand columns, the other ends of the ladder platforms extend in the direction far away from the stand columns to form an overhang, the ladder sections are connected between the two ladder platforms, and the hanging columns are connected between the uppermost ladder platform and the ladder platform right below the uppermost ladder platform. The structure of the invention effectively eliminates the structural columns below the stair platform, improves the integral aesthetic degree of the stair and meets the use requirements of building functions; the platform on the two sides is utilized to form a mutually balanced restriction effect, so that the stress rationality of a structural system and the safety of communication personnel are ensured; meanwhile, the structure of the invention reduces the investment of construction facilities, does not need templates and field installation in the construction process, improves the operation efficiency and is worth popularizing.
Description
Technical Field
The invention relates to the field of steel structure stairs, in particular to a non-column steel structure stair at the end part of an integral cooperative stress platform.
Background
The steel structure stair is a very important component of housing industrialization, the development origin is early, the technology is relatively mature, the application is convenient, and good economic value can be generated. However, as the aesthetic level of people is improved, a plurality of different previous requirements are also required for some structural components, for example, the pillars below the landing of the stair greatly affect the aesthetic appearance of the building and hinder the visual effect, so that designers develop the design structure without pillars for the landing, but the existing design structures have the following problems: although the lower part of the landing realizes the effect without columns, the landing needs to be supported by a main structure, and some stair landings are arranged at the middle position of the floor height, and no structural form can extend out of a beam to support the stair landings; the structure atress is unreasonable, and landing need rely on the cantilever beam to come as the atress structure, and the cantilever beam need be fixed on the major structure again, appears the potential safety hazard easily.
Therefore, there is a need to develop a steel structure staircase that can solve the above problems.
Disclosure of Invention
The invention aims to provide a non-column steel structure stair at the end part of an integral cooperative stress platform.
The technical scheme adopted for achieving the purpose of the invention is that the integrally cooperative stress platform end part pillar-free steel structure stair comprises a first upright post, a second upright post, a third upright post, a fourth upright post, a first stair platform, a second stair platform and a stair section.
The first stand column, the second stand column, the third stand column and the fourth stand column are arranged on the ground at intervals, and connecting lines of the lower ends of the first stand column, the second stand column, the third stand column and the fourth stand column form a rectangle. The first upright post and the second upright post are adjacent and have the same length, the third upright post and the fourth upright post have the same length, and the length of the first upright post is greater than that of the third upright post.
First stair platform and second stair platform are the horizontally rectangular plate, and a plurality of first stair platforms are arranged along vertical direction equidistant, and the one end of first stair platform is fixed between first stand and second stand, and the other end extends towards the direction of keeping away from first stand and second stand.
A plurality of the second stair platform is arranged along the vertical direction at equal intervals, one end of the second stair platform is fixed between the third stand column and the fourth stand column, and the other end extends towards the direction far away from the third stand column and the fourth stand column. The first stair platform and the second stair platform are distributed in a staggered mode.
Each second stair platform is connected with the bench between the first stair platform that is nearest rather than the top, is connected with the bench between every second stair platform and the first stair platform that is nearest rather than the below.
Further, the bench includes ladder beam and stair step, and the ladder beam is the channel-section steel, two ladder beam parallel arrangement, and the opening of two ladder beams deviates from each other.
The stair step is formed by bending a pattern steel plate, and the stair step is welded between two ladder beams to form a ladder section.
Further, first stair platform includes two shaped steel roof beams I, four shaped steel roof beams II, secondary beam I, a plurality of purlin I and decorative pattern steel sheet I.
Secondary beam I and two shaped steel roof beam I are parallel to each other and secondary beam I is located between two shaped steel roof beams I, are connected with two shaped steel roof beams II that are parallel to each other between every shaped steel roof beam I and the secondary beam I. Two section steel beams II on one side of the secondary beam I correspond to two section steel beams II on the other side of the secondary beam I respectively, and the two corresponding section steel beams II are on the same straight line.
Every two that are parallel to each other be connected with a plurality of purlins I between II shaped steel roof beams, purlin I is on a parallel with secondary beam I, a plurality of purlins I equidistant arrangement.
The figured steel plate I is laid and fixed on the upper surfaces of two section steel beams I, four section steel beams II, a secondary beam I and a plurality of purlins I to form a first stair platform.
One end that first stair platform contains two shaped steel roof beams II is connected to between first stand and the second stand.
When the bench is connected with first stair platform, on same end of two ladder roof beams passes through bolted connection to same shaped steel roof beam II between first stand and the second stand.
Furthermore, the second stair platform comprises two section steel beams III, four section steel beams IV, a secondary beam II, a plurality of purlins II and a figured steel plate II.
The secondary beam II and the two section steel beams III are parallel to each other, the secondary beam II is located between the two section steel beams III, and two section steel beams IV which are parallel to each other are connected between each section steel beam III and the secondary beam II. And the two section steel beams IV on one side of the secondary beam II correspond to the two section steel beams IV on the other side respectively, and the two corresponding section steel beams IV are on the same straight line.
Every two girder steels IV that are parallel to each other are connected with a plurality of purlins II between, and purlin II is on a parallel with secondary beam II, and a plurality of purlins II are equidistant to be arranged.
And the second patterned steel plate II is laid and fixed on the upper surfaces of the two section steel beams III, the four section steel beams IV, the secondary beam II and the purlines II to form a second stair platform.
And one end of the second stair platform containing two section steel beams IV is connected between the third upright post and the fourth upright post.
When the bench is connected with the second stair platform, the same ends of the two stair beams are connected to the same section steel beam IV between the third upright post and the fourth upright post through bolts.
Further, the top be connected with two mutual interval davits between first stair platform and the adjacent first stair platform, two davits are all connected on first stair platform keeps away from one end of first stand and second stand.
Further, the first upright column, the second upright column, the third upright column and the fourth upright column are all made of HW steel.
The invention has the beneficial effects that:
1. the structure of the invention effectively eliminates the structural columns below the stair platform, improves the integral aesthetic degree of the stair and meets the use requirements of building functions;
2. the invention has exquisite design, utilizes the restriction effect of mutual balance formed by the platforms at the two sides, and ensures the stress rationality of a structural system and the safety of communication personnel;
3. the structure of the invention reduces the investment of construction facilities, does not need templates and field installation in the construction process, improves the operation efficiency and is worth popularizing.
Drawings
FIG. 1 is a schematic view of a staircase according to the present invention;
fig. 2 is a schematic view of a first stair platform;
fig. 3 is a schematic view of a second stair platform;
FIG. 4 is a schematic view of a ladder section;
fig. 5 shows the stress situation of the stairs before and after the suspension posts are arranged.
In the figure: the first upright post 1, the second upright post 2, the third upright post 3, the fourth upright post 4, the first stair platform 5, a section steel beam I501, a section steel beam II 502, a secondary beam I503, a purlin I504, a figured steel plate I505, the second stair platform 6, a section steel beam III 601, a section steel beam IV 602, a secondary beam II 603, a purlin II 604, a figured steel plate II 605, a stair section 7, a stair beam 701, a stair step 702 and a hanging column 8.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses no post steel construction stair of stress platform tip in coordination entirely, including first stand 1, second stand 2, third stand 3, fourth stand 4, first stair platform 5, second stair platform 6 and bench 7. The first upright post 1, the second upright post 2, the third upright post 3 and the fourth upright post 4 are all made of HW steel and are of an integral vertical bearing structure.
Referring to fig. 1, the first upright column 1, the second upright column 2, the third upright column 3 and the fourth upright column 4 are arranged on the ground at intervals, and connecting lines of the lower ends of the first upright column 1, the second upright column 2, the third upright column 3 and the fourth upright column 4 form a rectangle. The first upright post 1 and the second upright post 2 are adjacent and have the same length, the third upright post 3 and the fourth upright post 4 have the same length, and the length of the first upright post 1 is larger than that of the third upright post 3.
Referring to fig. 2, the first landing 5 includes two section steel beams i 501, four section steel beams ii 502, a secondary beam i 503, a plurality of purlins i 504, and a pattern steel plate i 505. The section steel beam I501 and the section steel beam II 502 are made of HN section steel.
The I503 secondary beam and the I501 two section steel beams are parallel to each other, the I503 secondary beam is located between the I501 two section steel beams, and two II 502 section steel beams which are parallel to each other are connected between each I501 section steel beam and the I503 secondary beam. The two section steel beams II 502 on one side of the secondary beam I503 correspond to the two section steel beams II 502 on the other side of the secondary beam I503 respectively, and the two corresponding section steel beams II 502 are on the same straight line. The secondary beam I503 shares the burden of the cantilever end.
A plurality of purlins I504 are connected between every two mutually parallel section steel beams II 502, the purlins I504 are parallel to the secondary beams I503, and the purlins I504 are arranged at equal intervals.
The first patterned steel plate I505 is paved and fixed on the upper surfaces of two section steel beams I501, four section steel beams II 502, a secondary beam I503 and a plurality of purlins I504 to form a first stair platform 5.
The first landing 5 has one end with two section steel beams ii 502 connected between the first column 1 and the second column 2.
A plurality of second stair platform 6 is arranged along vertical direction equidistant, and the one end of second stair platform 6 is fixed between third stand 3 and fourth stand 4, and the other end extends towards the direction of keeping away from third stand 3 and fourth stand 4. The first stair platform 5 and the second stair platform 6 are distributed in a staggered mode.
Referring to fig. 3, the second landing 6 includes two section steel beams iii 601, four section steel beams iv 602, a secondary beam ii 603, a plurality of purlins ii 604, and a pattern steel plate ii 605. The section steel beam III 601 and the section steel beam IV 602 are made of HN section steel.
The secondary beam II 603 and the two section steel beams III 601 are parallel to each other, the secondary beam II 603 is located between the two section steel beams III 601, and two section steel beams IV 602 which are parallel to each other are connected between each section steel beam III 601 and the secondary beam II 603. The two section steel beams IV 602 on one side of the secondary beam II 603 correspond to the two section steel beams IV 602 on the other side respectively, and the two corresponding section steel beams IV 602 are on the same straight line. And the secondary beam II 603 shares the burden of the cantilever end.
And a plurality of purlins II 604 are connected between every two parallel section steel beams IV 602, the purlins II 604 are parallel to the secondary beams II 603, and the purlins II 604 are arranged at equal intervals.
And the second figured steel plate II 605 is paved and fixed on the upper surfaces of two section steel beams III 601, four section steel beams IV 602, a secondary beam II 603 and a plurality of purlins II 604 to form a second stair platform 6.
One end of the second stair platform 6, which contains two section steel beams iv 602, is connected between the third upright 3 and the fourth upright 4.
Referring to fig. 1, a step 7 is connected between each second landing 6 and the first landing 5 closest above it, and a step 7 is connected between each second landing 6 and the first landing 5 closest below it.
Referring to fig. 4, the bench 7 includes a ladder beam 701 and a stair step 702, the ladder beam 701 is a channel steel, the two ladder beams 701 are arranged in parallel, and openings of the two ladder beams 701 face away from each other. The stair steps 702 are formed by bending pattern steel plates, the included angle of the stair steps 702 is 90 degrees, and the stair steps 702 are welded between the two ladder beams 701 to form a ladder section 7.
According to design requirements, the upper end of the lowermost ladder section 7 is connected with the first ladder platform 5 or the second ladder platform 6, and the lower end is fixed on the ground. Referring to fig. 1, in this embodiment, the upper end of the lowermost ladder section 7 is connected to the second landing 6, and the lower end is mounted on the ground and fixed to the lower end of the first upright 1.
When the bench 7 is connected to the first landing 5, the same ends of the two ladder beams 701 are connected to the same section steel beam ii 502 between the first upright 1 and the second upright 2 by bolts. When the bench 7 is connected to the second landing 6, the same ends of the two ladder beams 701 are bolted to the same section steel beam iv 602 between the third upright 3 and the fourth upright 4.
Referring to fig. 1, because the uppermost first stair platform 5 lacks the unilateral cantilever bending moment of the third upright column 3 and the fourth upright column 4, two suspension posts 8 are connected between the uppermost first stair platform 5 and the adjacent first stair platform 5, and the two suspension posts 8 are connected to one end of the first stair platform 5 far away from the first upright column 1 and the second upright column 2.
Referring to the diagram (1) in fig. 5, the structural stress diagram is shown when the suspension posts 8 are not arranged, and referring to the diagram (2) in fig. 5, the structural stress diagram is shown when the suspension posts 8 are arranged, and the analysis and comparison of the two diagrams can show that under finite element analysis, the arrangement of the suspension posts 8 has little influence on the building effect, but has great improvement on the structural stress, and when the design requirement of the stratum building is not influenced, the arrangement of the suspension posts at the top layer is recommended.
The whole steel that all adopts of stair of this embodiment forms, need not concrete and reinforcing bar, and site operation simple to operate is swift. The mutual balance function and the mutual pulling function of the platforms on the two sides of the stair are utilized to realize the pillariness under the platforms, the force transmission path is clear, the structural form has obvious advantages, the toughness and the tensile capacity of steel are greatly exerted, the engineering cost is reduced due to the improvement of the utilization rate of materials, the environment-friendly energy-saving material accords with the green construction, energy conservation and environmental protection, the cyclic utilization is realized, and the house industrialization and industrialization can be promoted.
Compared with the common staircase, the staircase of the embodiment is more flexible, more stable and safer. The space that occupies is little, has saved very big usage space, and the stair dead weight of steel construction is lighter a lot than reinforced concrete stair, and is lighter pleasing to the eye and easily install and reform transform in the molding, compares this structural style's stair advantage more outstanding, is worth promoting in the engineering.
The stair in the embodiment is made of steel materials, and is not limited to specific types, and the general Q235 and Q345 can meet the stress strength requirement of the structural form. Of course, other materials may be used to achieve the same appearance, such as carbon fiber, polyamide fiber, galvanized steel sheet, etc.
Example 2:
the embodiment discloses no post steel construction stair of stress platform tip in coordination entirely, including first stand 1, second stand 2, third stand 3, fourth stand 4, first stair platform 5, second stair platform 6 and bench 7.
Referring to fig. 1, the first upright column 1, the second upright column 2, the third upright column 3 and the fourth upright column 4 are arranged on the ground at intervals, and connecting lines of the lower ends of the first upright column 1, the second upright column 2, the third upright column 3 and the fourth upright column 4 form a rectangle. The first upright post 1 and the second upright post 2 are adjacent and have the same length, the third upright post 3 and the fourth upright post 4 have the same length, and the length of the first upright post 1 is larger than that of the third upright post 3.
A plurality of second stair platform 6 is arranged along vertical direction equidistant, and the one end of second stair platform 6 is fixed between third stand 3 and fourth stand 4, and the other end extends towards the direction of keeping away from third stand 3 and fourth stand 4. The first stair platform 5 and the second stair platform 6 are distributed in a staggered mode.
Referring to fig. 1, a step 7 is connected between each second landing 6 and the first landing 5 closest above it, and a step 7 is connected between each second landing 6 and the first landing 5 closest below it.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 4, the bench 7 includes a ladder beam 701 and a stair step 702, the ladder beam 701 is a channel steel, the two ladder beams 701 are arranged in parallel, and the openings of the two ladder beams 701 are deviated from each other.
The stair steps 702 are formed by bending a pattern steel plate, and the stair steps 702 are welded between two ladder beams 701 to form a ladder section 7.
Example 4:
the main structure of this embodiment is the same as that of embodiment 3, and further, referring to fig. 2, the first landing 5 includes two section steel beams i 501, four section steel beams ii 502, a secondary beam i 503, a plurality of purlins i 504, and a pattern steel plate i 505.
The I503 secondary beam and the I501 two section steel beams are parallel to each other, the I503 secondary beam is located between the I501 two section steel beams, and two II 502 section steel beams which are parallel to each other are connected between each I501 section steel beam and the I503 secondary beam. The two section steel beams II 502 on one side of the secondary beam I503 correspond to the two section steel beams II 502 on the other side of the secondary beam I503 respectively, and the two corresponding section steel beams II 502 are on the same straight line.
A plurality of purlins I504 are connected between every two mutually parallel section steel beams II 502, the purlins I504 are parallel to the secondary beams I503, and the purlins I504 are arranged at equal intervals.
The first patterned steel plate I505 is paved and fixed on the upper surfaces of two section steel beams I501, four section steel beams II 502, a secondary beam I503 and a plurality of purlins I504 to form a first stair platform 5.
The first landing 5 has one end with two section steel beams ii 502 connected between the first column 1 and the second column 2.
When the bench 7 is connected to the first landing 5, the same ends of the two ladder beams 701 are connected to the same section steel beam ii 502 between the first upright 1 and the second upright 2 by bolts.
Example 5:
the main structure of this embodiment is the same as that of embodiment 4, and further, referring to fig. 3, the second landing 6 includes two section steel beams iii 601, four section steel beams iv 602, one secondary beam ii 603, a plurality of purlins ii 604, and a pattern steel plate ii 605.
The secondary beam II 603 and the two section steel beams III 601 are parallel to each other, the secondary beam II 603 is located between the two section steel beams III 601, and two section steel beams IV 602 which are parallel to each other are connected between each section steel beam III 601 and the secondary beam II 603. The two section steel beams IV 602 on one side of the secondary beam II 603 correspond to the two section steel beams IV 602 on the other side respectively, and the two corresponding section steel beams IV 602 are on the same straight line.
And a plurality of purlins II 604 are connected between every two parallel section steel beams IV 602, the purlins II 604 are parallel to the secondary beams II 603, and the purlins II 604 are arranged at equal intervals.
And the second figured steel plate II 605 is paved and fixed on the upper surfaces of two section steel beams III 601, four section steel beams IV 602, a secondary beam II 603 and a plurality of purlins II 604 to form a second stair platform 6.
One end of the second stair platform 6, which contains two section steel beams iv 602, is connected between the third upright 3 and the fourth upright 4.
When the bench 7 is connected to the second landing 6, the same ends of the two ladder beams 701 are bolted to the same section steel beam iv 602 between the third upright 3 and the fourth upright 4.
Example 6:
the main structure of this embodiment is the same as that of embodiment 5, further, referring to fig. 1, two suspension posts 8 spaced from each other are connected between the uppermost first landing platform 5 and the adjacent first landing platform 5, and the two suspension posts 8 are all connected to one end of the first landing platform 5 far away from the first upright post 1 and the second upright post 2.
Example 7:
the main structure of this embodiment is the same as that of embodiment 6, and further, the first column 1, the second column 2, the third column 3, and the fourth column 4 are all HW steel.
Claims (6)
1. The whole non-column steel structure stair with the cooperative stress platform end is characterized in that: comprises a first upright post (1), a second upright post (2), a third upright post (3), a fourth upright post (4), a first stair platform (5), a second stair platform (6) and a stair section (7);
the first upright post (1), the second upright post (2), the third upright post (3) and the fourth upright post (4) are arranged on the ground at intervals, and the connecting lines of the lower ends of the first upright post (1), the second upright post (2), the third upright post (3) and the fourth upright post (4) form a rectangle; the first upright post (1) and the second upright post (2) are adjacent and have the same length, the third upright post (3) and the fourth upright post (4) have the same length, and the length of the first upright post (1) is greater than that of the third upright post (3);
the first stair platforms (5) and the second stair platforms (6) are horizontal rectangular plates, the first stair platforms (5) are arranged at equal intervals in the vertical direction, one ends of the first stair platforms (5) are fixed between the first upright posts (1) and the second upright posts (2), and the other ends of the first stair platforms extend in the direction far away from the first upright posts (1) and the second upright posts (2);
the second stair platforms (6) are arranged at equal intervals in the vertical direction, one ends of the second stair platforms (6) are fixed between the third upright post (3) and the fourth upright post (4), and the other ends of the second stair platforms extend towards the direction far away from the third upright post (3) and the fourth upright post (4); the first stair platform (5) and the second stair platform (6) are distributed in a staggered manner;
every be connected with bench (7) between second stair platform (6) and its the nearest first stair platform (5) in top, be connected with bench (7) between every second stair platform (6) and its the nearest first stair platform (5) in below.
2. The stair of claim 1, wherein the stair comprises a single-piece, multi-piece, integrally-stressed platform end, and a single-piece, multi-piece: the stair section (7) comprises stair beams (701) and stair steps (702), the stair beams (701) are channel steel, the two stair beams (701) are arranged in parallel, and openings of the two stair beams (701) are deviated from each other;
the stair steps (702) are formed by bending pattern steel plates, and the stair steps (702) are welded between the two ladder beams (701) to form a ladder section (7).
3. The stair of claim 2, wherein the stair comprises a single-piece, multi-piece, integrally-stressed platform end, and a single-piece, multi-piece: the first stair platform (5) comprises two section steel beams I (501), four section steel beams II (502), a secondary beam I (503), a plurality of purlins I (504) and a pattern steel plate I (505);
the secondary beam I (503) and the two section steel beams I (501) are parallel to each other, the secondary beam I (503) is located between the two section steel beams I (501), and two section steel beams II (502) which are parallel to each other are connected between each section steel beam I (501) and the secondary beam I (503); the two section steel beams II (502) on one side of the secondary beam I (503) correspond to the two section steel beams II (502) on the other side respectively, and the two corresponding section steel beams II (502) are on the same straight line;
a plurality of purlins I (504) are connected between every two parallel section steel beams II (502), the purlins I (504) are parallel to the secondary beams I (503), and the purlins I (504) are arranged at equal intervals;
the first patterned steel plate I (505) is paved and fixed on the upper surfaces of two section steel beams I (501), four section steel beams II (502), a secondary beam I (503) and a plurality of purlins I (504) to form a first stair platform (5);
one end, containing two section steel beams II (502), of the first stair platform (5) is connected between the first upright post (1) and the second upright post (2);
when the bench (7) is connected with the first stair platform (5), the same ends of the two stair beams (701) are connected to the same section steel beam II (502) between the first upright post (1) and the second upright post (2) through bolts.
4. The stair of claim 2, wherein the stair comprises a single-piece, multi-piece, integrally-stressed platform end, and a single-piece, multi-piece: the second stair platform (6) comprises two section steel beams III (601), four section steel beams IV (602), a secondary beam II (603), a plurality of purlins II (604) and a pattern steel plate II (605);
the secondary beam II (603) and the two section steel beams III (601) are parallel to each other, the secondary beam II (603) is located between the two section steel beams III (601), and two section steel beams IV (602) which are parallel to each other are connected between each section steel beam III (601) and the secondary beam II (603); the two section steel beams IV (602) on one side of the secondary beam II (603) correspond to the two section steel beams IV (602) on the other side respectively, and the two corresponding section steel beams IV (602) are on the same straight line;
a plurality of purlins II (604) are connected between every two parallel section steel beams IV (602), the purlins II (604) are parallel to the secondary beams II (603), and the purlins II (604) are arranged at equal intervals;
the second patterned steel plate II (605) is paved and fixed on the upper surfaces of two section steel beams III (601), four section steel beams IV (602), a secondary beam II (603) and a plurality of purlines II (604) to form a second stair platform (6);
one end, containing two section steel beams IV (602), of the second stair platform (6) is connected between the third upright post (3) and the fourth upright post (4);
when the ladder section (7) is connected with the second ladder platform (6), the same end of the two ladder beams (701) is connected to the same section steel beam IV (602) between the third upright column (3) and the fourth upright column (4) through bolts.
5. The stair of claim 1, wherein the stair comprises a single-piece, multi-piece, integrally-stressed platform end, and a single-piece, multi-piece: the top be connected with two mutual interval davits (8) between first stair platform (5) rather than adjacent first stair platform (5), two davits (8) are all connected and are served in one of keeping away from first stand (1) and second stand (2) in first stair platform (5).
6. The stair of claim 1, wherein the stair comprises a single-piece, multi-piece, integrally-stressed platform end, and a single-piece, multi-piece: the first upright post (1), the second upright post (2), the third upright post (3) and the fourth upright post (4) are all made of HW steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115262880A (en) * | 2022-08-05 | 2022-11-01 | 中铁二院昆明勘察设计研究院有限责任公司 | L-shaped stair structure for non-column subway station |
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| CN212613456U (en) * | 2020-08-10 | 2021-02-26 | 重庆大学 | Integrally cooperative stress platform end non-column steel structure stair |
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| CN212613456U (en) * | 2020-08-10 | 2021-02-26 | 重庆大学 | Integrally cooperative stress platform end non-column steel structure stair |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115262880A (en) * | 2022-08-05 | 2022-11-01 | 中铁二院昆明勘察设计研究院有限责任公司 | L-shaped stair structure for non-column subway station |
| CN115262880B (en) * | 2022-08-05 | 2023-10-31 | 中铁二院昆明勘察设计研究院有限责任公司 | L-shaped stair structure for non-column subway station |
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