CN113089837B - Environment-friendly steel structure spiral ramp and construction method thereof - Google Patents
Environment-friendly steel structure spiral ramp and construction method thereof Download PDFInfo
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- CN113089837B CN113089837B CN202110530099.6A CN202110530099A CN113089837B CN 113089837 B CN113089837 B CN 113089837B CN 202110530099 A CN202110530099 A CN 202110530099A CN 113089837 B CN113089837 B CN 113089837B
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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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
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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
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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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
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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
- E04B2001/0053—Buildings characterised by their shape or layout grid
-
- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3583—Extraordinary methods of construction, e.g. lift-slab, jack-block using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to an environment-friendly steel structure spiral ramp, which comprises a continuously arranged ramp plate and a plurality of vertically arranged prestressed steel pull rods, wherein the top of each steel pull rod is connected with a roof, the bottom of each steel pull rod is fixedly arranged on the ground, the middle of each steel pull rod is penetrated and fixed with a ramp plate passing through the steel pull rod, and a plurality of connecting components which are arranged at intervals are arranged between the ramp plate and the wall surface of a main body. The invention also relates to a construction method of the environment-friendly steel structure spiral ramp, which meets the requirements of strength, service life and safety.
Description
Technical Field
The invention relates to a special-shaped building technology, in particular to an environment-friendly steel structure spiral ramp and a construction method thereof.
Background
The outside majority of building main part is curtain structure, and to some buildings that match with science and technology, the designer needs to realize the high degree of agreeing with the theme of expression and building appearance, and this just brings the degree of difficulty for actual construction structure and construction method.
The design requirement sets up spiral ramp in the periphery of building main part, and the periphery of building main part is circular cone or cylindrical structure, and spiral ramp is the spiral form from the bottom up and "twines" in succession at the building main part periphery. In specific structural design and construction, the contact ratio of simulation accuracy in steel structure system construction and actual stress condition during site operation is guaranteed to be a key problem, the spiral ramp is continuous, if a structure at a certain position fails, the stress of the whole system is easy to change, the maintenance is complex, the service life is short, and potential safety hazards exist.
Disclosure of Invention
In order to solve the problems, the invention provides an environment-friendly steel structure spiral ramp and a construction method thereof. The technical scheme adopted by the invention is as follows:
the utility model provides an environment-friendly steel construction spiral ramp, includes the ramp plate and the vertical a plurality of prestressing steel pull rod that set up in succession, roof, bottom are connected at the top of steel pull rod and set firmly in ground, the middle part wears to establish the ramp panel of fixing its process, be equipped with the coupling assembling of a plurality of interval arrangement between ramp plate and the main part wall.
According to the environment-friendly steel structure spiral ramp, the steel pull rod comprises an upper connector, a plurality of bracket assemblies, a middle screw rod, a lower screw rod and a lower connector;
the lower end of the upper joint is connected with a bracket assembly, a locking ring is arranged between the bracket assembly and the upper joint, the upper end of the lower screw rod is connected with the bracket assembly, the lower end of the lower screw rod is connected with the lower joint, adjacent bracket assemblies are connected through the middle screw rod, and the bracket assembly is used for penetrating through a ramp plate.
According to the environment-friendly steel structure spiral ramp, the bracket component comprises a cast steel sleeve, a bracket seat and a rubber sleeve, and the rubber sleeve is sleeved on the outer surface of the cast steel sleeve.
A construction method for the environment-friendly steel structure spiral ramp comprises the following steps:
s1) hoisting and pulling steel pull rods with required quantity between the roof and the ground, wherein the steel pull rods are uniformly distributed in the horizontal plane where the spiral ramp is located by taking the geometric center of the roof as the center;
s2) carrying out prestress first-stage tensioning on the steel pull rod;
s3) mounting a structural beam of the spiral ramp, and taking a steel pull rod as a fixed node;
s4) mounting a ramp plate and a connecting component of the spiral ramp on the structural beam by taking the steel tie rod as a fixed node, and monitoring the integral displacement of the spiral ramp and the displacement of each ramp plate connecting node;
s5) the steel pull rod is tensioned to a specified prestress value in a prestress second stage.
In the step S2, the first stage tension of the steel tie rod is as follows: the steel pull rods are evenly divided into five groups of tensioning units in the horizontal plane where the spiral ramp is located,
the steel pull rods of the first group of tensioning units are concentrically arranged in a cross direction, and the horizontal plane is divided into four same first sector areas arranged in a right angle;
the arrangement of the steel pull rods of the second group of tensioning units is that the four first sectors are evenly divided to obtain eight same second sectors;
the arrangement of the steel pull rods of the third group of tensioning units is that the eight second sector areas are averagely divided into sixteen same third sector areas;
the arrangement of the steel pull rods of the fourth group of tensioning units is that eight third fan-shaped areas distributed at intervals are evenly divided to obtain sixteen fourth fan-shaped areas;
the arrangement of the steel pull rods of the fifth group of tensioning units is that the eight remaining third sectors distributed at intervals are evenly divided into sixteen fifth sectors;
and during each tensioning, selecting the group of tensioning units to simultaneously tension the four steel pull rods which are symmetrically distributed around the center, wherein each steel pull rod is tensioned by two jacks respectively, and the pretensioning force is 240 +/-10 kN.
In the step S4, the five groups of tension units in the first stage of tension finally divide the spiral ramp into thirty-two identical sectors, and the ramp plates are installed in the sectors in the following manner: firstly, symmetrically installing ramp plates and the connecting components in spaced sector areas by taking the geometric center of a roof as the center, and executing for 8 times in total, wherein the ramp plates are arranged at intervals; then, the ramp plates are symmetrically arranged in the vacant sector area to form a continuous and complete spiral ramp.
In the step S4, displacement detection and relative deformation monitoring are performed on the ramp plates and their nodes in each sector, where the displacement variation from the ground to the roof is increasing trend and the displacement variation of each ramp plate near the main body wall surface is smaller than that of each ramp plate far from the main body wall surface.
After the second stage of tensioning in the step S5), the pretensioning force at the upper end of the steel tie rod is 250+ (-15-10) kN, and the pretensioning force at the lower end of the steel tie rod is 200+ (-15-10) kN.
The invention has the beneficial effects that:
the spiral ramp is arranged on the periphery of a main body wall surface, the steel pull rod structure of prestress is arranged between a roof and the ground, and the connecting component is arranged between the steel pull rod structure and the main body wall surface, so that the steel structure beam of the fixed spiral ramp and the ramp plate of the steel structure beam are used for lifting the ramp steel structure, and the connecting stability is greatly improved. Wholly be the steel construction, need not concrete maintenance, formwork and pour, construction energy consumption is low, environmental protection and energy saving, the maintenance of being convenient for, if need reform transform fitment etc. after several years, the steel construction can also be retrieved and heavily smelts, avoids the wasting of resources.
And secondly, the spiral ramp is symmetrically arranged and installed at intervals, so that the stability of stress of the roof is guaranteed, and the construction efficiency is improved.
And thirdly, the steel pull rod is tensioned twice, so that the stress deformation of the spiral ramp is reduced, and the service life and the installation strength of the spiral ramp are ensured.
Drawings
FIG. 1 is an external schematic view of a spiral ramp according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of a spiral ramp according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a steel tie rod according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a first stage tensioning sequence of a first steel tension rod according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a symmetrical construction process of a spiral ramp according to an embodiment of the present invention;
FIG. 6 is a schematic view of a node global displacement simulation of the spiral ramp according to the embodiment of the present invention;
FIG. 7 is a schematic view of monitoring the maximum displacement of a node of a spiral ramp according to an embodiment of the present invention;
FIG. 8 is a schematic view of monitoring relative deformation of a ramp plate of a spiral ramp according to an embodiment of the present invention;
FIG. 9 shows the prestressing force values of the upper end and the lower end of the steel tie rod after the installation of the spiral ramp according to the embodiment of the invention;
in the figure: the steel roof slope comprises a slope plate 1, a steel pull rod 2, a roof 3, a main wall surface 4, an upper joint 21, a locking ring 22, a rubber sleeve 23, a cast steel sleeve 24, a middle screw 25, a lower screw 26 and a lower joint 27.
Detailed Description
The invention is further explained below with reference to the drawings.
The embodiment relates to an environment-friendly steel structure spiral ramp, the total weight of the spiral ramp is 205 tons, the ramp surrounds the wall surface 4 of a main body for about 4.5 weeks, the width of the spiral ramp is 3m, the total length of the spiral ramp is about 280m, and the spiral ramp is hung on a roof 3 through 64 prestressed steel pull rods. The spiral ramp includes ramp plate 1 and the vertical a plurality of prestressing steel pull rod 2 that sets up in succession, roof 3, bottom that connect of steel pull rod 2 are set firmly in ground, the middle part and are worn to establish ramp plate 1 of fixing its process, be equipped with the coupling assembling of a plurality of interval arrangement between ramp plate 1 and the main part wall 4.
In the environment-friendly steel structure spiral ramp, the steel pull rod 2 comprises an upper joint 21, a plurality of bracket assemblies, a middle screw rod 25, a lower screw rod 26 and a lower joint 27; the lower end of the upper joint 21 is connected with a bracket component and a locking ring 22 is arranged between the bracket component and the upper joint, the upper end of the lower screw rod 26 is connected with a bracket component and a lower end of the lower screw rod to connect the lower joint 27, adjacent bracket components are connected through a middle screw rod 25, and the bracket component is used for penetrating through the fixed slope plate 1. The steel pull rod 2 has high assembly precision requirement, the steel pull rod must be ensured to be straight after being installed, and the node design requirement is stable and reliable.
Above-mentioned environment-friendly steel construction spiral ramp, the bracket subassembly is including cast steel sleeve 24, bracket seat 28 and rubber sleeve 23, and cast steel sleeve 24 realizes that the node is adjustable through helicitic texture, can guarantee the accurate control of spiral ramp elevation. The rubber sleeve 23 is sleeved on the outer surface of the cast steel sleeve 24, so that flexible connection of the nodes is realized, vibration absorption of the structure is facilitated, and the problem of shock absorption is solved.
The construction method of the environment-friendly steel structure spiral ramp comprises the following steps:
s1) hoisting and pulling the steel pull rods 2 with required quantity between the roof 3 and the ground, wherein the steel pull rods 2 are uniformly distributed in the horizontal plane where the spiral ramp is located by taking the geometric center of the roof 3 as the center;
s2) carrying out prestress first-stage tensioning on the steel pull rod;
s3) mounting a structural beam of the spiral ramp, and taking a steel pull rod as a fixed node;
s4) mounting the ramp plates 1 and the connecting components of the spiral ramp on the structural beam by taking the steel tie rods as fixed nodes, and monitoring the integral displacement of the spiral ramp and the displacement of each connecting node of the ramp plates 1;
s5) the steel pull rod is tensioned to a specified prestress value in a prestress second stage.
In the step S2, the first stage tension of the steel tie rod 2 is as follows: the steel pull rod 2 is evenly divided into five groups of tensioning units in the horizontal plane of the spiral ramp,
the steel pull rods 2 of the first group of tensioning units are concentrically arranged in a cross direction, and the horizontal plane is divided into four same first sector areas arranged in a right angle;
the steel pull rods 2 of the second group of tensioning units are arranged in such a way that the four first sectors are equally divided into eight same second sectors;
the arrangement of the steel pull rods 2 of the third group of tensioning units is that eight second fan-shaped areas are averagely divided to obtain sixteen same third fan-shaped areas;
the arrangement of the steel pull rods 2 of the fourth group of tensioning units is that eight third fan-shaped areas distributed at intervals are evenly divided to obtain sixteen fourth fan-shaped areas;
the arrangement of the steel pull rods 2 of the fifth group of tensioning units is that the eight remaining third sectors distributed at intervals are evenly divided into sixteen fifth sectors;
and during each tensioning, the group of tensioning units is selected to simultaneously tension the four steel pull rods 2 which are symmetrically distributed around the center, each steel pull rod 2 is tensioned by two jacks, and the pretensioning force is 240 +/-10 kN.
In the step S4, the five groups of tension units in the first stage of tension finally divide the spiral ramp into thirty-two identical sectors, the ramp plate 1 is installed in the sectors, and the installation manner of the ramp plate 1 is as follows: firstly, symmetrically installing ramp plates 1 and the connecting components in spaced sector areas by taking the geometric center of a roof 3 as a center, and executing for 8 times in total, wherein the ramp plates 1 are arranged at intervals; then, the ramp plates 1 are symmetrically installed in the vacant sector area to form a continuous and complete spiral ramp.
Before construction, a data reference value is provided for system health detection through a finite element modal analysis result of the environment-friendly steel structure spiral ramp, as shown in fig. 6. During the specific construction, in the step S4, displacement detection and relative deformation monitoring are performed on the ramp plates 1 and the nodes thereof in each sector, where the displacement variation from the ground to the roof is increasing trend, and the displacement variation of each ramp plate 1 near the main body wall surface 4 side is smaller than the displacement variation far from the main body wall surface 4 side.
Based on the wireless internet of things technology of LORA, monitoring system includes number collection line module and image recognition module, number collection line module includes strain sensor and vibration sensor. The image recognition is developed by adopting an embedded system platform and a low-illumination COMS image sensor, and deformation of remote, non-contact and multi-measuring-point is monitored in real time. The whole displacement monitoring is that the infrared target is rigidly installed at a deformation monitoring point, the remote displacement sensor is installed at a node, the displacement sensor shoots the measured slope plate 1 in real time, parameters of the target position changing along with time can be monitored, and the displacement of the slope plate 1 is obtained through analysis and calculation.
With reference to fig. 9, after the second stage tensioning in step S5), the pretension force at the upper end of the steel pull rod 2 is 250+ (-15-10) kN, and the pretension force at the lower end is 200+ (-15-10) kN.
Claims (5)
1. The construction method of the environment-friendly steel structure spiral ramp is characterized by comprising a continuously arranged ramp plate (1) and a plurality of vertically arranged prestressed steel pull rods (2), wherein the top of each steel pull rod (2) is connected with a roof (3), the bottom of each steel pull rod is fixedly arranged on the ground, the middle of each steel pull rod penetrates through the corresponding ramp plate (1) through which the steel pull rod passes, and a plurality of connecting components which are arranged at intervals are arranged between the ramp plate (1) and a main body wall surface (4);
the construction method of the spiral ramp comprises the following steps:
s1) hoisting and pulling the steel pull rods (2) with required quantity between the roof (3) and the ground, wherein the steel pull rods (2) are uniformly distributed in the horizontal plane where the spiral ramp is located by taking the geometric center of the roof (3) as the center;
s2) carrying out prestress first-stage tensioning on the steel pull rod: the steel pull rod (2) is evenly divided into five groups of tensioning units in the horizontal plane where the spiral ramp is located,
the steel pull rods (2) of the first group of tensioning units are concentrically arranged in a cross direction, and the horizontal plane is uniformly divided into four same first sector areas arranged at right angles;
the steel pull rods (2) of the second group of tensioning units are arranged in such a way that the four first sectors are equally divided into eight same second sectors;
the steel pull rods (2) of the third group of tensioning units are arranged in such a way that the eight second fan-shaped areas are equally divided into sixteen same third fan-shaped areas;
the steel pull rods (2) of the fourth group of tensioning units are arranged in such a way that eight third fan-shaped areas distributed at intervals are evenly divided into sixteen fourth fan-shaped areas;
the arrangement of the steel pull rods (2) of the fifth group of tensioning units is that the eight remaining third sectors distributed at intervals are evenly divided into sixteen fifth sectors;
during each tensioning, four steel pull rods (2) symmetrically distributed by the group of tensioning units in the center are selected to be tensioned simultaneously, each steel pull rod (2) is tensioned by two jacks, and the pretensioning force is 240 +/-10 kN;
s3) mounting a structural beam of the spiral ramp, and taking a steel pull rod as a fixed node;
s4) mounting the ramp plates (1) and the connecting components of the spiral ramp on the structural beam by taking the steel tie rods as fixed nodes, and monitoring the integral displacement of the spiral ramp and the displacement of the connecting nodes of each ramp plate (1); in the first stage of tensioning, the five groups of tensioning units finally divide the spiral ramp into thirty-two same fan-shaped areas, the ramp plate (1) is installed in the fan-shaped areas, and the installation mode of the ramp plate (1) is as follows: firstly, symmetrically installing ramp plates (1) and the connecting components in spaced sector areas by taking the geometric center of a roof (3) as the center, and executing for 8 times in total, wherein the ramp plates (1) are arranged at intervals; then, symmetrically installing ramp plates (1) in the vacant sector area to form a continuous and complete spiral ramp;
s5) the steel pull rod is tensioned to a specified prestress value in a prestress second stage.
2. The construction method of the environment-friendly steel structure spiral ramp according to claim 1, wherein: the steel pull rod (2) comprises an upper joint (21), a plurality of bracket assemblies, a middle screw rod (25), a lower screw rod (26) and a lower joint (27);
the lower end of the upper joint (21) is connected with a bracket component and a locking ring (22) is arranged between the bracket component and the upper joint, the upper end of the lower screw rod (26) is connected with a bracket component and a lower end which are connected with a lower joint (27), the adjacent bracket components are connected through a middle screw rod (25), and the bracket component is used for penetrating through the ramp plate (1).
3. The construction method of the environment-friendly steel structure spiral ramp according to claim 2, characterized in that: the bracket component comprises a cast steel sleeve (24), a bracket seat (28) and a rubber sleeve (23), wherein the rubber sleeve (23) is sleeved on the outer surface of the cast steel sleeve (24).
4. The construction method of the environment-friendly steel structure spiral ramp according to claim 1, wherein: in the step S4, displacement detection and relative deformation monitoring are performed on the ramp plates (1) and their nodes in each sector, where the displacement variation from the ground to the roof is increasing trend and the displacement variation of each ramp plate (1) near the main wall (4) is smaller than the displacement variation far from the main wall (4).
5. The construction method of the environment-friendly steel structure spiral ramp according to claim 4, wherein: after the second stage of tensioning in the step S5), the pretension force at the upper end of the steel pull rod (2) is 250+ (-15-10) kN, and the pretension force at the lower end is 200+ (-15-10) kN.
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| CN116695868B (en) * | 2023-06-29 | 2023-11-17 | 山西建筑工程集团有限公司 | Vertical face dislocation spiral building adopting pipe truss structure and construction method |
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| CN104631684A (en) * | 2014-12-26 | 2015-05-20 | 江苏沪宁钢机股份有限公司 | Single-layer latticed shell steel structure roof system based on concrete building and assembling method of single-layer latticed shell steel structure roof system based on concrete building |
| CN107605172A (en) * | 2017-10-16 | 2018-01-19 | 叶长青 | The ruggedized construction of concrete roof beam |
| CN110107037A (en) * | 2019-05-07 | 2019-08-09 | 中国航空规划设计研究总院有限公司 | A kind of the prestressed steel structure pits rampway structure and its construction method of rotation rising |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR200472825Y1 (en) * | 2007-12-18 | 2014-05-29 | 우탐라오 하누만트라오 자다브 | An architectural structure |
| CN205777319U (en) * | 2016-06-15 | 2016-12-07 | 常州朗逊防静电地板有限公司 | Network overhead floors support |
| CN205907812U (en) * | 2016-07-22 | 2017-01-25 | 中国十九冶集团有限公司 | Take steel frame structure that encorbelments greatly of pull rod |
| CN109440929A (en) * | 2018-11-13 | 2019-03-08 | 贵州建工集团第六建筑工程有限责任公司 | A kind of prefabricated traction construction method of installation of roof system stressed arch-bar high-altitude tensioning |
| CN209653222U (en) * | 2018-12-04 | 2019-11-19 | 东南大学 | A kind of prestressed FRP rebar pre-tensioning system stretch-draw anchor equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104631684A (en) * | 2014-12-26 | 2015-05-20 | 江苏沪宁钢机股份有限公司 | Single-layer latticed shell steel structure roof system based on concrete building and assembling method of single-layer latticed shell steel structure roof system based on concrete building |
| CN107605172A (en) * | 2017-10-16 | 2018-01-19 | 叶长青 | The ruggedized construction of concrete roof beam |
| CN110107037A (en) * | 2019-05-07 | 2019-08-09 | 中国航空规划设计研究总院有限公司 | A kind of the prestressed steel structure pits rampway structure and its construction method of rotation rising |
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