CN104407094A - Movable reaction support adopting water cooling as well as method - Google Patents
Movable reaction support adopting water cooling as well as method Download PDFInfo
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- CN104407094A CN104407094A CN201410669106.0A CN201410669106A CN104407094A CN 104407094 A CN104407094 A CN 104407094A CN 201410669106 A CN201410669106 A CN 201410669106A CN 104407094 A CN104407094 A CN 104407094A
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Abstract
The invention belongs to the technical field of a fire experiment furnace, and particularly relates to a movable reaction support adopting water cooling at the bottom of the fire experiment furnace as well as a production method of the movable reaction support. Water is injected into a groove of channel steel, is taken as a heating medium and can reduce the temperature of an outer surface after evaporation, so that the problem of over high temperature of the outer surface of shape steel in the bottom support position in a fire experiment can be effectively solved, further, the shape steel is adopted to replace steel bars and criss-cross support plates are arranged in the support, accordingly, the bearing capacity of the bottom support is further improved, and the service life of the shape steel is prolonged by reducing the temperature of the outer surface of the shape steel; meanwhile, the condition that a worker is scalded by carelessly contacting with the shape steel of the bottom support in the experiment can be avoided; the movable reaction support can be used separately or in a combined manner aiming at a test object, is simple, practical, economical, reasonable, convenient to transport and easy to operate and can be widely applied to a building component fire resistance test in a fire laboratory.
Description
Technical field
The invention belongs to fire desaster experimental stove technical field, particularly relating to the cooling of a kind of fire desaster experimental stove bottom water can dynamical reaction experiment support and manufacture method thereof.
Background technology
Building element mainly comprises floor, greatly across beam, I-beam, post, inside and outside wall board, door, window, furred ceiling etc., these building elements are skeletons of buildings, the quality of its performance determines the quality of the various aspects of performance such as Antiseismic building, windproof, fire prevention, building element fire testing mainly in order to fire temperature evolution in research department with investigate the temperature field of building element inside and structural mechanical property, thus provides scientific basis for the lesion assessment of building element resisting fire design and concrete on fire structure and repairing and reinforcement.At present, after building fire increasing, particularly " 911 " event occur, people are more and more kept a close eye on to the performance change of building element under fire effect and consequent harm.Utilizing combustion furnace to simulate actual fire to study building element fire resistance is one of Main Means adopted both at home and abroad.Abroad, as: the combustion furnace carrying out this respect work is all had in the inspection center of the U.S., Britain, Japan and other countries or R&D institution.Domestic, Tianjin fire research institute of the Ministry of Public Security, Ministry of Public Security's Sichuan fire research also has this trial furnace.Take the lead in setting up fire test room with Chinese University of Science and Technology in domestic colleges and universities, each colleges and universities set up the fire test room of oneself in succession subsequently, my school Shenyang Building Univ. establishes fire test room under the hosting of doctor Liu Yongjun, can carry out the fire performance research of independently building element.
Meanwhile, along with developing rapidly of construction business and building materials work, new architecture structure form and building construction member constantly occur, the Test And Research Work of building element fire performance except will constantly providing the fire performance data of building construction member, also should actively create conditions carry out the combined member fire performance such as reinforcing bar Fireproof concrete frame structure component, reinforcing bar Fireproof concrete roof truss, continuously beam slab research, experiment work.The test of building element fire performance also needs perfect further, in domestic current fire testing method, and the class A of geometric unitA fire testings such as non-load bearing wall, partition wall, free beam, freely-supported floor, roof boarding, furred ceiling, every technical conditions comparative maturity; Bearing wall and pillar fire testing are still needed supplementary and perfect further in pressurized equipment.
In nearest fire test; the bottom support of the fire testing of bearing wall and pillar is a key factor of impact test always; and carry out in the test of building element fire performance due to exposed shaped steel-Fireproof concrete bearing outside due to temperature too high; usually there will be scald accident in various degree, so how to reduce the temperature in fire test outside bottom support bracket shaped steel and provide effective bottom support bearing capacity to become problem very crucial in fire test.
Summary of the invention
The defect that the present invention exists to overcome prior art, the object of this invention is to provide a kind of use water as heated medium evaporation after can reduce the temperature of outside surface, replace reinforcing bar can improve the bearing capacity of bearing with shaped steel, thus solve the problem of bottom support bracket Lack of support; This Technological Economy is suitable for, and convenient transport, single use also can use together with multiple walking abreast in use, be easy to operation, and the movable reaction support of the water for cooling of Be very effective and manufacture method thereof.
The technology used in the present invention solution is the movable reaction support of a kind of water for cooling, comprises top board, bearing and channel-section steel, and described bearing one end is connected with top board, and the other end of bearing is connected with the bottom portion of groove of channel-section steel; Bottom described channel-section steel, two ends are provided with fixed head, and described fixed head is provided with bolt hole.
Be provided with crisscross back up pad in described bearing, described cross-brace plate and longitudinal supporting plate are at least two groups.
Described back up pad is shaped steel.
Between described back up pad/fill gaps between back up pad and bearing has fire prevention Fireproof concrete.
A manufacture method for the movable reaction support of water for cooling, has step as follows:
Step 1: select supporting stand size: according to the acting force applied in the building element size will carried out in fire test and test, according to the axial compressive strength of used material, utilize N=0.9 α f
ca calculates, wherein
N---axle pressure design load
α---the stability factor of shaped steel Fireproof concrete component
F
c---shaped steel axial compressive strength design load
A---member section area
Obtain member section area A, the supporting stand size 100mm larger than test building element size of selection, thus calculate supporting stand size;
Step 2: select shaped steel, channel-section steel material and Fireproof concrete model: shaped steel, channel-section steel Material selec-tion level-B steel material; Strength grade of concrete is not less than C30; The diameter of the maximum aggregate of Fireproof concrete is not more than 25mm;
Step 3: make shaped steel; To the selected sheet material side of looking for, mark the line of center line four limit; Go out 50mm more than each limit, so that the final size after inspection plane, cut with semi auto cutting machine, for preventing cutting deformation, when cutting slit, the first undercutting 200mm of gas welding, at the soldered fishplate bar of junction of the edges of two sheets of paper mid point, gas cutting again after controlling well;
Step 4: clean weld zone, weld zone surface requirements is dry, clean, rustless to avoid bringing harm to welding quality;
Step 5: dry welding rod in drying baker, bake out temperature 350 ± 10 DEG C, dries 1.5 ~ 2h, constant temperature 250 DEG C, solder flux bake out temperature 250 ± 10 DEG C, dries 2h, constant temperature 100 DEG C;
Step 6: before welding, should check welding machine runs whether normally carry out weldment preheating, and preheating adopts oxy-acetylene to dry rifle heating, then carries out surface temperature measurement with surface temperature measurement table, when temperature reaches 120 DEG C, carries out welding work immediately;
Step 7: shaped steel welding adopts once group to shaping, integral solder;
Step 8: build Fireproof concrete; From the even blanking of shaped steel surrounding in Fireproof concrete casting process, layering feeds intake height at 50cm, and each separates interior employing 2 vibrating spears and vibrates to top;
Step 9: be more than 95% in relative humidity after having built, temperature is maintenance 28 days at 20 ± 2 DEG C, until reach the design strength of more than 95%;
Step 10: welding top plate; After Fireproof concrete reaches design strength, adopt step 4,5,6, the method for 7 carries out top board welding.
The once group adopted in described step 7 is to shaping, integral solder is specially and is placed on assembled moulding bed by design drawing by the shape steel plate under gas cutting, is assembled into correct figure, uses angle steel spot welding, as temporary support, form bearing lower shape finally by symmetrical spot welding; In welding, steel plate in the middle part of first welding, finally welds surrounding tank steel plate.
Step 7: during welding, every bar weld seam wants continued operation to complete, and the weld seam after welding should cover rock wool material immediately and be incubated.
Compared with prior art, the beneficial effect that the present invention has is: by injecting water in the groove of channel-section steel, the temperature of outside surface can be reduced after using water as heated medium evaporation, effectively can solve the difficult problem that in fire test, bottom support bracket place shaped steel hull-skin temperature is too high, and by using shaped steel replace reinforcing bar and arrange crisscross back up pad in bearing, and then improve the load-bearing capacity of bottom support bracket, by reducing the temperature of shaped steel outside surface and then extending the serviceable life of shaped steel, staff in an experiment can be avoided again to be burned due to the shaped steel of carelessness contact bottom support bracket simultaneously, this invention also parallel can to use with multiple together for the single use of subjects, simple and practical, economical rationality, conveniently transports, is easy to operate the building element fire performance test that can extensively be practically applicable in fire test room.Effectively solve the difficult problem that in China's fire test room, building element test bottom support bracket place shaped steel hull-skin temperature is too high, improve the bearing capacity of bottom support bracket simultaneously, and then be conducive to effective research of component fire performance in fire test.And adopt this manufacture method to have and can save Production Time, simultaneously easy to make, simple to operate, be of value to late maintaining, effectively can save the advantage using material.
Accompanying drawing explanation
Fig. 1 is three-dimensional plot of the present invention;
Fig. 2 is front view of the present invention;
Fig. 3 is left view of the present invention;
Fig. 4 is vertical view of the present invention;
Fig. 5 is A-A sectional view in Fig. 3;
Fig. 6 is B-B sectional view in Fig. 4;
Fig. 7 is C-C sectional view in Fig. 4;
Fig. 8 is Fire Furnace overall schematic.
In figure:
1, top board, 2, bearing, 3, channel-section steel, 4, bolt hole, 5, fixed head, 6, back up pad, 7, cross-brace plate, 8, longitudinal supporting plate, 9, Fireproof concrete, 10, lifting jack, 11, test SCCC post, 12, trial furnace outrigger, 13, PLASTIC LAMINATED bottom trial furnace, 14, the movable reaction support of water for cooling, 15, steel I-beam base plate, 16, burning things which may cause a fire disaster.
Embodiment
Embodiment:
As shown in figs. 1-7, the movable reaction support of a kind of water for cooling, comprises top board 1, bearing 2 and channel-section steel 3, and described bearing 2 one end is connected with top board 1, and the other end of bearing 2 is connected with the bottom portion of groove of channel-section steel 3; Bottom described channel-section steel 3, two ends are provided with fixed head 5, and described fixed head 5 is provided with bolt hole 4.Be provided with crisscross back up pad 6 in described bearing 2, described cross-brace plate 7 and longitudinal supporting plate 8 are at least two groups.
Described back up pad 6 is shaped steel.
Between described back up pad 6/fill gaps between back up pad 6 and bearing 2 has Fireproof concrete 9.
Wherein selected in the size of bearing, bearing shaped steel, Fireproof concrete, channel-section steel, and the spacing of shaped steel, the height of external water level depends on concrete testing requirements.If test building element be independently pillar time, the movable reaction support of independent water for cooling can be selected; If when the building element of test is bearing wall, the parallel use of the movable reaction support of multiple water for cooling can be selected, with satisfied test demand.
As shown in Figure 8, with SCCC post 11 for experimental subjects, trial furnace in test comprises PLASTIC LAMINATED 13, the movable reaction support 14 of water for cooling, steel I-beam base plate 15 and burning things which may cause a fire disaster 16 bottom lifting jack 10, test SCCC post 11, trial furnace outrigger 12, trial furnace, and described trial furnace is provided with PLASTIC LAMINATED 13 bottom trial furnace outrigger 12 and trial furnace; Wherein lifting jack 10, test SCCC post 11, the movable reaction support 14 of water for cooling are from top to bottom connected successively with steel I-beam base plate 15.
A manufacture method for the movable reaction support of water for cooling, has step as follows:
Step 1: select supporting stand size: according to the acting force applied in the building element size will carried out in fire test and test, determined the size of the movable reaction support of required water for cooling by bearing capacity calculation; General supporting stand size about 100mm larger than test building element size;
Step 2: select shaped steel, channel-section steel material and Fireproof concrete model: shaped steel, channel-section steel Material selec-tion level-B steel material are so this bearing adopts Q345-B level low alloy high-strength steel; Equally, Q345-B level steel selected by channel-section steel; Fireproof concrete strength grade is not less than C30; The diameter of the maximum aggregate of Fireproof concrete is not more than 25mm; The present embodiment selects the diameter of maximum aggregate to be the C45 Fireproof concrete of 15mm.
Step 3: make shaped steel; To the selected sheet material side of looking for, mark the line of center line four limit; Go out 50mm more than each limit, so that the final size after inspection plane, cut with semi auto cutting machine, for preventing cutting deformation, when cutting slit, the first undercutting 200mm of gas welding, at the soldered fishplate bar of junction of the edges of two sheets of paper mid point, gas cutting again after controlling well; Finally be sized to 600mm × 600mm.
Step 4: clean weld zone, weld zone surface requirements is dry, clean, rustless to avoid bringing harm to welding quality;
Step 5: dry welding rod in drying baker, bake out temperature 350 ± 10 DEG C, dries 1.5 ~ 2h, constant temperature 250 DEG C, solder flux bake out temperature 250 ± 10 DEG C, dries 2h, constant temperature 100 DEG C;
Step 6: before welding, should check welding machine runs whether normally carry out weldment preheating, and preheating adopts oxy-acetylene to dry rifle heating, then carries out surface temperature measurement with surface temperature measurement table, when temperature reaches 100 ~ 150 DEG C, carries out welding work immediately;
Step 7: shaped steel welding adopts once group to shaping, integral solder;
Step 8: build Fireproof concrete; When Fireproof concrete is built and vibrates, dead angle area is more, easily causes Fireproof concrete leakiness, and from the even blanking of shaped steel surrounding in Fireproof concrete casting process, layering feeds intake height at about 50cm, and each separates interior employing 2 vibrating spears and vibrates to top;
Step 9: be more than 95% in relative humidity after having built, temperature is maintenance 28 days at 20 ± 2 DEG C, until reach the design strength of more than 95%;
Step 10: welding top plate; After Fireproof concrete reaches design strength, adopt step 4,5,6, the method for 7 carries out top board welding.
The once group adopted in described step 7 is to shaping, integral solder is specially and is placed on assembled moulding bed by design drawing by the shape steel plate under gas cutting, is assembled into correct figure, uses angle steel spot welding, as temporary support, form bearing lower shape finally by symmetrical spot welding; In welding, steel plate in the middle part of first welding, finally welds surrounding tank steel plate.
Step 7: during welding, every bar weld seam wants continued operation to complete, and the weld seam after welding should cover rock wool material immediately and be incubated, and extends weldment temperature fall time.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (7)
1. the movable reaction support of water for cooling, is characterized in that: comprise top board, bearing and channel-section steel, described bearing one end is connected with top board, and the other end of bearing is connected with the bottom portion of groove of channel-section steel; Bottom described channel-section steel, two ends are provided with fixed head, and described fixed head is provided with bolt hole.
2. the movable reaction support of a kind of water for cooling according to claim 1, is characterized in that: be provided with crisscross back up pad in described bearing, and described cross-brace plate and longitudinal supporting plate are at least two groups.
3. the movable reaction support of a kind of water for cooling according to claim 2, is characterized in that: described back up pad is shaped steel.
4. the movable reaction support of a kind of water for cooling according to Claims 2 or 3, is characterized in that: between described back up pad/and fill gaps between back up pad and bearing has fire prevention Fireproof concrete.
5. a manufacture method for the movable reaction support of water for cooling, is characterized in that: have step as follows:
Step 1: select supporting stand size: according to the acting force applied in the building element size will carried out in fire test and test, according to the axial compressive strength of used material, utilize N=0.9 α f
ca calculates, wherein
N---axle pressure design load
α---the stability factor of shaped steel Fireproof concrete component
F
c---shaped steel axial compressive strength design load
A---member section area
Obtain member section area A, supporting stand size 100mm-120mm larger than test building element size, thus calculate supporting stand size;
Step 2: select shaped steel, channel-section steel material and Fireproof concrete model: shaped steel, channel-section steel Material selec-tion level-B steel material; Fireproof concrete strength grade is not less than C30; The diameter of the maximum aggregate of Fireproof concrete is not more than 25mm;
Step 3: make shaped steel; To the selected sheet material side of looking for, mark the line of center line four limit; Go out 50mm-60mm more than each limit, so that the final size after inspection plane, cut with semi auto cutting machine, for preventing cutting deformation, when cutting slit, the first undercutting 200mm-50mm of gas welding, at the soldered fishplate bar of junction of the edges of two sheets of paper mid point, gas cutting again after controlling well;
Step 4: clean weld zone, weld zone surface requirements is dry, clean, rustless to avoid bringing harm to welding quality;
Step 5: dry welding rod in drying baker, bake out temperature 350 ± 10 DEG C, dries 1.5 ~ 2h, constant temperature 250 DEG C, solder flux bake out temperature 250 ± 10 DEG C, dries 2h, constant temperature 100 DEG C;
Step 6: before welding, should check welding machine runs whether normally carry out weldment preheating, and preheating adopts oxy-acetylene to dry rifle heating, then carries out surface temperature measurement with surface temperature measurement table, when temperature reaches 100 ~ 150 DEG C, carries out welding work immediately;
Step 7: shaped steel welding adopts once group to shaping, integral solder;
Step 8: build Fireproof concrete; From the even blanking of shaped steel surrounding in Fireproof concrete casting process, layering feeds intake height at 50mm-55mm, and each separates interior employing 2 vibrating spears and vibrates to top;
Step 9: be more than 95% in relative humidity after having built, temperature is maintenance 28 days at 20 ± 2 DEG C, until reach the design strength of more than 95%;
Step 10: welding top plate; After Fireproof concrete reaches design strength, adopt step 4,5,6, the method for 7 carries out top board welding.
6. the manufacture method of the movable reaction support of a kind of water for cooling according to claim 5, it is characterized in that: the once group adopted in described step 7 is to shaping, integral solder is specially and is placed on assembled moulding bed by the shape steel plate under gas cutting by design drawing, be assembled into correct figure, use angle steel spot welding, as temporary support, form bearing lower shape finally by symmetrical spot welding; In welding, steel plate in the middle part of first welding, finally welds surrounding tank steel plate.
7. the manufacture method of the movable reaction support of a kind of water for cooling according to claim 5 or 6, it is characterized in that: described step 7: during welding, every bar weld seam wants continued operation to complete, the weld seam after welding should cover rock wool material immediately and be incubated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669106.0A CN104407094B (en) | 2014-11-20 | 2014-11-20 | A kind of movable reaction support of water for cooling and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410669106.0A CN104407094B (en) | 2014-11-20 | 2014-11-20 | A kind of movable reaction support of water for cooling and method |
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| CN104407094A true CN104407094A (en) | 2015-03-11 |
| CN104407094B CN104407094B (en) | 2016-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409117A (en) * | 2016-11-24 | 2017-02-15 | 公安部天津消防研究所 | Space structure node fire hazard behavior experiment apparatus and method thereof |
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| JPH11256517A (en) * | 1998-03-10 | 1999-09-21 | Tokai Rubber Ind Ltd | Manufacture of rubber bearing body |
| CN102912722A (en) * | 2012-09-25 | 2013-02-06 | 北京铁科首钢轨道技术股份有限公司 | Spherical multidirectional force measuring support |
| CN203222729U (en) * | 2013-04-01 | 2013-10-02 | 柳州东方工程橡胶制品有限公司 | Novel shock-damping and shock-isolating support |
| CN203782881U (en) * | 2014-04-18 | 2014-08-20 | 北京建筑大学 | Shock insulation support |
| CN204228679U (en) * | 2014-11-20 | 2015-03-25 | 沈阳建筑大学 | The movable reaction support of a kind of water for cooling |
-
2014
- 2014-11-20 CN CN201410669106.0A patent/CN104407094B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256517A (en) * | 1998-03-10 | 1999-09-21 | Tokai Rubber Ind Ltd | Manufacture of rubber bearing body |
| CN102912722A (en) * | 2012-09-25 | 2013-02-06 | 北京铁科首钢轨道技术股份有限公司 | Spherical multidirectional force measuring support |
| CN203222729U (en) * | 2013-04-01 | 2013-10-02 | 柳州东方工程橡胶制品有限公司 | Novel shock-damping and shock-isolating support |
| CN203782881U (en) * | 2014-04-18 | 2014-08-20 | 北京建筑大学 | Shock insulation support |
| CN204228679U (en) * | 2014-11-20 | 2015-03-25 | 沈阳建筑大学 | The movable reaction support of a kind of water for cooling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409117A (en) * | 2016-11-24 | 2017-02-15 | 公安部天津消防研究所 | Space structure node fire hazard behavior experiment apparatus and method thereof |
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