CN102619278A - Large energy dissipation and shock absorption space structure system - Google Patents
Large energy dissipation and shock absorption space structure system Download PDFInfo
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- CN102619278A CN102619278A CN2012101064355A CN201210106435A CN102619278A CN 102619278 A CN102619278 A CN 102619278A CN 2012101064355 A CN2012101064355 A CN 2012101064355A CN 201210106435 A CN201210106435 A CN 201210106435A CN 102619278 A CN102619278 A CN 102619278A
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Abstract
The invention provides a large energy dissipation and shock absorption space structure system which can be used for the technical field of civil engineering. If a concrete pipe post steel truss hybrid structure system is used by an air cooling platform supporting structure of a large heat engine plant, the earthquake fortification lines are weak, low-order torsion is obvious, and repair after middle earthquake is difficult. The structure comprises a horizontal structure, and cylinders and an energy dissipation and shock absorption support located below the horizontal structure, and is characterized in that the energy dissipation and shock absorption support adopts a large flection-preventing support, and the flection-preventing support is arranged between the bottoms and the tops of the two cylinders, and is arranged to be paired monocline supports or paired cross supports. According to the invention, the materials as well as the construction and the installation costs of the flection-preventing support can basically be compensated by the materials, template, and construction and installation expense of the concrete pipe post after the diameter is reduced; the total cost is equivalent, and the aspects of earthquake fortification lines, low-order torsion, repair property after earthquake, multiple-earthquake resistance and the like are obviously improved; and the large support system can also be used for large space structures of other horizontal structural styles.
Description
Technical field:
The invention discloses a kind of large-scale braced structures system, can be used for technical field of civil engineering, large thermal power plant air cooling platform braced structures for example, field, Large-scale Railway station space structures, large-scale hangar, large-scale and special industry factory building etc. also can be consulted and used.
Background technology:
The heat-exchange device of large-scale thermal power is one of four large equipments (being boiler, steam turbine, generator, air cooling apparatus) in air cooling power station, because heat radiation needs, air cooling tubes condenser, cooling fan (fan) need civil structure that the super large space is provided.The general concrete tubing string steel truss combination construction system that adopts, the tubing string cross section is big, superstructure and facility weight is big, center of gravity is high, and is loaded with large-scale vibration source, and is strict to distortion and Oscillation Amplitude.But this structural system often shows as that anti-vibration defense lines is weak, low order is reversed more obviously, and it is difficult that repair middle shake back, is difficult to bear repeatedly, many levels earthquake strike, also is difficult to realize the structure design based on condition.
Summary of the invention:
For overcoming the deficiency of prior art; The invention discloses a kind of large-scale braced structures system; Can be used for technical field of civil engineering, large thermal power plant air cooling platform braced structures for example, field, Large-scale Railway station space structures, large-scale hangar, large-scale and special industry factory building etc. also can be consulted and used.
A kind of large-scale energy-dissipating and shock-absorbing space structures system provided by the invention comprises that cylinder and energy-dissipating and shock-absorbing that horizontal structure and horizontal structure below is provided with support, and said cylinder is a concrete column, or profile steel concrete column, or laced of battened compression member; It is characterized in that energy-dissipating and shock-absorbing supports and adopts large-scale anti-flexing to support, anti-flexing supports and is arranged between the bottom and top of two cylinders, is set to paired monocline support, perhaps is set to paired cross support.
Said anti-flexing is supported for multistage and connects the anti-flexing support of overlength yardstick.
When other space structures of being used for beyond the air cooling platform, the horizontal structure form also can adopt tension string beam structure, space truss structure, suspended-dome structure or roof truss structure.
Solution disclosed by the invention is an energy-dissipating and shock-absorbing supporting steel truss structural system.Comprise concrete column, or profile steel concrete column, or laced of battened compression member, energy-dissipating and shock-absorbing supports and steel truss.Energy-dissipating and shock-absorbing supports and can use anti-flexing to support (also claim buckling-restrained support, do not have to bond and support), and when concrete column adopted pipe cross-section, diameter can be less than the tubing string diameter of above-mentioned combination construction system.
Because air cooling platform structure space yardstick is big; The present invention solves the technical scheme that relevant issues take: use multistage to connect the anti-flexing of overlength yardstick and support (LBRB); Anti-flexing is supported between two column bottoms and the top and connects; Paired monocline support can be set to, also paired cross support can be set to.
Know-why of the present invention is: the first, and rely on the endurance and stiffness that anti-flexing supports and concrete structure provided to reduce structure lateral displacement and vibration in normal operational phase (comprising meet under the earthquake intensity earthquake) more, improve the functional of building.The second, under the fortification intensity seismic condition, anti-flexing supports shares the interlaminar shear under most of geological process, the protection agent structure, and surrendering by steel core simultaneously increases structural damping, reduces geological process, reaches the purpose of energy-dissipating and shock-absorbing.The 3rd, to meet under the earthquake intensity seismic condition rare, anti-flexing supports except that sharing shearing, energy-dissipating and shock-absorbing, has also improved the anti-ability of collapsing of structure.The 4th, because the remarkable improvement of agent structure condition can realize the structure design based on condition, the hardware supports of reliable civil engineering structure is provided for lifeline engineering.
Major advantage of the present invention and beneficial effect are:
Have multiple anti-vibration defense lines, eliminated low order and reversed the vibration shape, the structure condition under the various earthquake levels significantly improves, have opposing repeatedly, many levels earthquake striking capabilities, can realize structure design based on condition.Can be used for newly-built structure, also can be used for existing structure and reinforce.
Economically, the anti-flexing of use supports the material and the construction and installation cost of (LBRB), compensates for material, template and the construction and installation expense of concrete tubing string that basically can be after diameter reduction, and overall cost maintains an equal level.
On the horizontal structure type selecting, above-mentioned steel truss also can adopt other form of structure.Like tension string beam structure, space truss structure, suspended-dome structure, roof truss structure etc.Therefore, the present invention also can be used for field, Large-scale Railway station space structures, large-scale hangar, large-scale and special industry factory building etc.
Description of drawings:
Fig. 1 is certain 300,000 kilowatts of air cooling platform structure facade constructional drawing.
Wherein, 1 condenser; 2 steel trusss; 3 concrete tubing strings; 5 fan blades; 6 windbreaks.
Fig. 2 is certain 300,000 kilowatts of air cooling platform structural plan constructional drawing
Wherein, 3 concrete tubing strings; 4 blower fan holes.
Fig. 3 is the vertical elevation of arranging in pairs of monocline support structure.
Wherein, 7 multistages connect the anti-flexing support of overlength yardstick, built-in fitting and connector at the bottom of 8 posts, 9 capital built-in fitting and connectors.
Fig. 4 is the horizontal elevation of arranging in pairs of monocline support structure.
Fig. 5 is the vertical elevation of arranging in pairs of cross support structure.
Fig. 6 is the horizontal elevation of arranging in pairs of cross support structure.
Fig. 7 is that multistage connects the anti-flexing support of overlength yardstick (LBRB) schematic appearance.
Wherein, 10 steel cores; 11 Butt Sections; 12 sleeve pipes; 13 sleeve pipe docking ports; Suspension centre in 14; 15 end suspension centres; 16 joint constructions.
Fig. 8 is that multistage connects the anti-flexing support of overlength yardstick (LBRB) internal structural map.
Wherein, one of 17 steel core active sections, 18 steel sleeves and concrete filled, 19 cutting arcs; 20 tip-clearance materials, 21 internal clearance materials, 22 smooth material, 23 Butt Section levels are to the flute profile weld bond; 24 Butt Section vertical channel-shaped weld bonds, 25 end suspension centre holes, in 26 the suspension centre hole; 27 inner Butt Section closed casing and expanding materials, 28 middle part Butt Section closed casing and expanding material, 29 smooth material borders.
Fig. 9 utilizes the present invention to carry out the flow chart of structure design.
The specific embodiment:
1, utilize choosing of structural system of the present invention and energy-dissipating and shock-absorbing support:
Selected large-scale anti-flexing supports: support according to the selected large-scale anti-flexing of the demand of agent structure rigidity requirement, the target of providing fortification against earthquakes, adopt multistage to connect the anti-flexing of overlength yardstick and support.
The anti-flexing of overlength yardstick that connects multistage supports and comprises a plurality of segmentations; Each segmentation comprises steel core, is wrapped in the concrete of filling out in the steel sleeve, steel sleeve of steel core active section outward; And being in the flexible material between steel core and the concrete filled, each segmentation is carried out butt welding and is connected combination in the Butt Section, the steel core surface flexible material of mating formation; Assembling butt joint closed casing, concrete filled and sealing.
When being used for air cooling platform, reinforced concrete column can adopt the tubular section pillar, and the big I in pillar cross section requires suitably to reduce according to energy-dissipating and shock-absorbing design and antidetonation ratio of axial compressive force to axial compressive ultimate capacity of section.When being used for other space structures, pillar also can adopt forms such as profile steel concrete column, laced of battened compression member.
When being used for air cooling platform, the horizontal structure form adopts steel truss structure.When being used for field, Large-scale Railway station, large-scale hangar, large-scale and special industry factory, horizontal structure also can adopt tension string beam structure, space truss structure, suspended-dome structure or roof truss structure.
2, the groundwork that utilizes the present invention to carry out structure design comprises:
Confirming of the calculating of agent structure mechanical property and the target of setting up defences: carry out preliminary design according to use and vertical carrying needs; Confirm the sectional dimension of agent structure member such as tubing string, steel truss; The endurance and stiffness of calculating agent structure, each position quality etc.; According to local basic intensity, structure importance degree and functional requirement, confirm the condition of structure under the various level geological processes target of setting up defences.
The anti-flexing of overlength yardstick supports (LBRB) performance design: selected material, section form and size, connected mode, tentatively confirm the initial stiffness of LBRB, initial yield displacement amount, surrender bearing capacity according to set up defences target, structure self mechanical property of condition.
The agent structure damping is calculated and design: with condition displacement of targets value under the earthquake intensity of many chances, the fortification intensity earthquake level as initial value; Calculate the rigidity of structure corresponding under this earthquake level, LBRB damping when structure collectivity damping ratio, geological process, carry out the geological process calculation of effect.As it is not enough to calculate gained action effect numerical precision, can carry out iterative computation, till satisfying required precision.Result of calculation like convergence does not satisfy the condition target under this earthquake level, can adjust the LBRB design parameters and proceed to calculate, till meeting the demands.
Selected LBRB is input in the Structure Design Software, carries out the design of agent structure structure, the concrete component arrangement of reinforcement.
Structural nonlinear is analyzed: utilize the modeling of structural nonlinear finite element analysis software; The structure that LBRB is set is carried out non-linear pushing away cover analysis and Nonlinear time-history analysis; The check agent structure is in rare performance of meeting under earthquake intensity earthquake, the ultra rare chance earthquake intensity earthquake, comprises resisting collapse checking computations and LBRB to prevent breaking checking computations.The person of meeting the demands promptly accomplishes whole calculation analysis work, needs further adjustment LBRB structure and performance parameter to calculate as not satisfying, till meeting the demands.
Built-in fitting, connector design: carry out the design of built-in fitting and connector to satisfactory LBRB and agent structure structure.
Can compare multiple structural concept and analyze and the cost accounting.
3, utilize main construction and installation operation of the present invention
Supporting concrete tubing string steel truss structure system with energy-dissipating and shock-absorbing is example; Built-in fitting 8 → shaft 3 reinforcement constructions → segmentation formwork → segmentation concreting at the bottom of concrete column 3 foundation constructions → the be provided with post → 3 top casting of capital built-in fitting 9 → capital reinforcement construction → post are set build concrete → concrete curing → form removal → integral hoisting LBRB7 → connection LBRB7 → lifting steel truss 8 → installation fan bridge → other plant equipment, facility, and supporting facility is installed.
Claims (3)
1. one kind large-scale energy-dissipating and shock-absorbing space structures system comprises that the energy-dissipating and shock-absorbing that is provided with between cylinder that horizontal structure and horizontal structure below is provided with and cylinder supports, and said cylinder is a reinforced concrete post, or profile steel concrete column, or laced of battened compression member; It is characterized in that energy-dissipating and shock-absorbing supports and adopts anti-flexing to support, anti-flexing supports and is arranged between the bottom and top of two cylinders, is set to paired monocline support, perhaps is set to paired cross support.
2. a kind of large-scale energy-dissipating and shock-absorbing space structures system according to claim 1 is characterized in that, said anti-flexing is supported for multistage and connects the anti-flexing support of overlength yardstick.
3. a kind of large-scale energy-dissipating and shock-absorbing space structures system according to claim 1 is characterized in that, the horizontal structure form adopts steel truss structure, or adopts tension string beam structure, space truss structure, suspended-dome structure or roof truss structure.
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| CN2012101064355A CN102619278A (en) | 2012-04-11 | 2012-04-11 | Large energy dissipation and shock absorption space structure system |
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| CN2012101064355A CN102619278A (en) | 2012-04-11 | 2012-04-11 | Large energy dissipation and shock absorption space structure system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979167A (en) * | 2012-11-26 | 2013-03-20 | 北京工业大学 | Multi-story high-rise assembled steel structure prestressed centrally-braced system |
| CN104358328A (en) * | 2014-10-18 | 2015-02-18 | 北京工业大学 | All-steel four-steel pipe multistage mountable overlong buckling-restrained brace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04185834A (en) * | 1990-11-20 | 1992-07-02 | Tomoe Corp | Space truss structure and construction method thereof |
| CN101864846A (en) * | 2010-06-18 | 2010-10-20 | 北京工业大学 | Embedded shock-absorption steel frame for seismic hardening |
| CN102392499A (en) * | 2011-11-04 | 2012-03-28 | 清华大学 | Anti-buckling support air cooling island structure |
| CN202627194U (en) * | 2012-04-11 | 2012-12-26 | 北京工业大学 | Large-scale energy dissipation damping space structure system |
-
2012
- 2012-04-11 CN CN2012101064355A patent/CN102619278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04185834A (en) * | 1990-11-20 | 1992-07-02 | Tomoe Corp | Space truss structure and construction method thereof |
| CN101864846A (en) * | 2010-06-18 | 2010-10-20 | 北京工业大学 | Embedded shock-absorption steel frame for seismic hardening |
| CN102392499A (en) * | 2011-11-04 | 2012-03-28 | 清华大学 | Anti-buckling support air cooling island structure |
| CN202627194U (en) * | 2012-04-11 | 2012-12-26 | 北京工业大学 | Large-scale energy dissipation damping space structure system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979167A (en) * | 2012-11-26 | 2013-03-20 | 北京工业大学 | Multi-story high-rise assembled steel structure prestressed centrally-braced system |
| CN102979167B (en) * | 2012-11-26 | 2014-11-05 | 北京工业大学 | Multi-story high-rise assembled steel structure prestressed centrally-braced system |
| CN104358328A (en) * | 2014-10-18 | 2015-02-18 | 北京工业大学 | All-steel four-steel pipe multistage mountable overlong buckling-restrained brace |
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Application publication date: 20120801 |