CN207036738U - A kind of tunnel roof fire resistance test device - Google Patents
A kind of tunnel roof fire resistance test device Download PDFInfo
- Publication number
- CN207036738U CN207036738U CN201720599871.9U CN201720599871U CN207036738U CN 207036738 U CN207036738 U CN 207036738U CN 201720599871 U CN201720599871 U CN 201720599871U CN 207036738 U CN207036738 U CN 207036738U
- Authority
- CN
- China
- Prior art keywords
- component
- bearing
- fire
- resistance test
- test device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
A kind of tunnel roof fire resistance test device, including the fire stove of a upper shed, some bearings, component and sealing structure for simulation tunnel top plate；Fire stove, component and the sealing device surround the burner hearth to form a sealing；The bearing is erected in inside the burner hearth, has identical height with the furnace wall of the fire stove；The component is placed on the bearing；The sealing structure includes 4 bells being staggeredly placed and at least refractory brick for sealing the space between bell and the fire stove, carries out tunnel roof fire resistance experiment using the device, handling component is easy to operate, alleviates the labor intensity of experimenter.
Description
Technical field
It the utility model is related to a kind of tunnel roof fire resistance test device.
Background technology
With the fast development of economy and the continuous progress of society, the traffic tunnel using subway and underground transportation junction as representative
Road is increasing, reinforced concrete building structure have because its normal temperature strength is high, from heavy and light, manufacture is easy, speed of application is fast, plasticity and toughness
The features such as good, it is widely adopted in highway in China tunnel construction.But fire thing is also swept along in the fast development of Tunnel Engineering
Therefore take place frequently, reinforced concrete building structure generally not fire resisting, when the reinforcing bar bearing temperature in concrete reaches 250 DEG C under intensity
Quickly, heated intensity decreases about 50% when reaching 350 DEG C, intensity declines more than 80% to drop at 500 DEG C.Thus make in high temperature of fire
Under, reinforced concrete construction collapses dangerous increase severely.Great effort, which is put into, for this domestic and foreign scholars carries out tunnel fire resistance
Can research.
Because the back of the body fire face in tunnel is massif, temperature thermocouple can not be inserted inside concrete bar-mat reinforcement from fiery face is carried on the back
Place, therefore fire resistance test is difficult to after tunnel completion.The research most effective method of tunnel structure fire resistance at present
It is local full size fire test, currently conventional is that this method is simple and convenient but is more suitable for side by fire by the edge-on one side of component
Wall is by fire, to top plate applicability deficiency.Therefore, to study tunnel roof fire-resistance property, fire prevention investment is reduced for after, is also calamity
Rescue provides possible afterwards, it is intended to invents a kind of top plate fire resistance test device, it is more met tunnel roof by condition of a fire shape
It is heated evenly, saves fuel, be easy to operate.
Utility model content
The purpose of this utility model is in place of overcome the deficiencies in the prior art, there is provided a kind of tunnel roof fire resistance
Test device, solves the problems such as applicability deficiency is tested to tunnel roof fire resistance in above-mentioned background technology.
Technical scheme is used by the utility model solves its technical problem：Provide a kind of tunnel roof fire resistance
Test device, including the fire stove of a upper shed, some bearings, component and sealing structure for simulation tunnel top plate；It is described
Fire stove, component and sealing device surround the burner hearth to form a sealing；
The bearing is erected in inside the burner hearth, has identical height with the furnace wall of the fire stove；
The component is placed on the bearing；
The sealing structure includes 4 bells being staggeredly placed and for sealing the space between bell and the fire stove
An at least refractory brick.
In the preferred embodiment of the utility model one, the tunnel roof fire resistance test device also includes anti-guncotton bag
It is around in by the outside wall surface of the bearing of clay brick masonry.
In the preferred embodiment of the utility model one, the top and/or inside of the bearing are also equipped with reinforcing bar.
In the preferred embodiment of the utility model one, the bearing quantity is 4, and array placed in the middle is arranged in inside burner hearth.
In the preferred embodiment of the utility model one, the component is formed based on prototype tunnel structure fabrication, and its bottom surface is
Rectangle, has four smooth sides, and the size configurations in component thickness direction are identical with prototype tunnel.
In the preferred embodiment of the utility model one, the sealing structure also includes being used to clog the bell and fire resisting
The anti-guncotton in gap between brick, the bell and component.
Compared with background technology, it has the following advantages that the technical program：
1. chamber structure, susceptor design are reasonable, the hole very little of last banking stage closure, can send someone to enter before banking
In stove, from the seal of internal check experimental rig, preferable obturation effect can be accomplished, before ensureing sample effective heating surface product
The firing rate greatly reduced in experimentation is put, the energy is saved, reduces experimental cost；
2. reduced the vortex flow area of burner hearth cross section in combustion process by hot mode using bottom one side, ensure that burner hearth is horizontal
It is more uniform and stable to temperature；
3. experimental rig makes simply, handling component is easy to operate, alleviates the labor intensity of experimenter；
4. the temperature change in fire stove is controlled by computer, data acquisition and Phenomena Observation all show as the feature of plate,
Data acquisition is automatically performed by computer, and test accuracy and efficiency are higher.
Brief description of the drawings
Fig. 1 depicts the profile of the utility model tunnel roof fire resistance test device；
Fig. 2 depicts the bearing distribution array figure of the utility model tunnel roof fire resistance test device；
Fig. 3 depicts the sealed structural representation of the utility model tunnel roof fire resistance test device.
Embodiment
Content of the present utility model is illustrated with reference to embodiment and accompanying drawing：
Refer to Fig. 1-3, tunnel roof fire resistance test device, including the fire stove 1 of a upper shed, some bearings 3,
Component 5 and sealing structure for simulation tunnel top plate；The fire stove 1, component 5 and sealing device surround to form a sealing
Burner hearth 12；
The bearing 3 is erected in inside the burner hearth 12, has identical height with the furnace wall 14 of the fire stove 1；
The component 5 is placed on the bearing 3；
The sealing structure includes 4 bells 72 being staggeredly placed and for sealing between the bell 72 and fire stove 1
An at least refractory brick 74 in space, in addition to for clogging between the bell 72 and refractory brick 74, the bell 72 and component 5
The anti-guncotton 76 in gap.
In the present embodiment, the quantity of bearing 3 is 4, and array placed in the middle is arranged in inside burner hearth 12.The top of the bearing 3
Portion and/or it is internal be also equipped with reinforcing bar 32, the tunnel roof fire resistance test device also including anti-guncotton 76 be paperwrapped in by
The outside wall surface of the bearing 3 of clay brick masonry.
To simulate prototype tunnel structure as far as possible, component 5 described in the present embodiment is formed based on prototype tunnel structure fabrication, its
Bottom surface is rectangle, has four smooth sides, the size configurations of the thickness direction of component 5 side identical with prototype tunnel, smooth
Face be advantageous to the 72 mutual contact of bell, reduce gap to each other.
The test of tunnel roof fire resistance is carried out using the present embodiment device to comprise the following steps：
1) component 5 is made：The component 5, is formed based on prototype tunnel structure fabrication, and the length and width in its section are respectively less than fire
The plane of stove 1, its bottom surface are rectangle, have four smooth sides, and the size configurations of thickness direction are identical with prototype tunnel；
2) bearing 3 is made：The position of bearing 3 is specified, the effect of bearing 3 is to prop component 5, so its bearing capacity must be big
In the gravity of component 5.If the sectional dimension of bearing 3 is designed to too small, it is difficult to meet the requirement for stablizing bearing carrier 5 simultaneously；If
The sectional dimension design of bearing 3 is too much, can reduce the fire area of component 5 again, is unfavorable for temperature and is transmitted in component 5.Institute
Need to go out the planar dimension of each bearing 3 when making bearing 3 by bearing capacity calculation, be determined further according to the size for calculating gained
Every layer of use revolution mesh and fragment of brick pose pattern, so as to design while meet stress and the sizes by two requirements of fire.
Bearing 3, to enable the gravity of component 5 fully to pass to bearing 3, is building the bearing 3 by laying bricks or stones by clay brick masonry
During to layer brick second from the bottom, φ 83 × 3 bar-mat reinforcements are buried in mortar is mixed and stirred.Continue to lay clay brick, to make the bottom of component 5
5 bar dowels 32 of φ 12 can be placed in the top uniform parallel of bearing 3 by fire.Build by laying bricks or stones and complete rear support 3 and the height phase of furnace wall 14
Together, the upper surface of four bearings 3 should be at same level, surfacing.
Because bearing 3 is wholy set in fire stove 1, need comprehensively by fire, to reduce destruction of the high temperature to bearing 3, so its
Periphery need to take safeguard measure, i.e., the reinforcing bar 32 at the top of bearing 3 and bearing 3 is wrapped up with anti-guncotton 76.
3) set up component 5 and seal：The component 5 is inserted into the top of bearing 3, is first erected at two pieces of bells 72
On the furnace wall 14 of the fire stove 1, the left and right sides of component 5 tightly described in contact；Left above furnace wall 14 thick with bell 72
Identical space is spent, is built a wall to the upper surface of bell 72 and maintained an equal level here with refractory brick 74, block the space；Another pair is set up again
72 contact component of bell, 5 other both sides, after the 3rd bell 72 lifts in place, send someone to enter in stove in progress from the hole on opposite
Portion's leak check, the laying state of anti-guncotton 76 of inside is checked, to that may occur to block in time at leakage fire.Then carry out outside
Leak check, remaining gap is clogged with anti-guncotton 76, finally after ensuring that internal seal can reach requirement, using last
One piece of bell 72 seals whole device.
4) send instruction using the control system of fire stove 1 to start to test, carry out data acquisition.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (6)
- A kind of 1. tunnel roof fire resistance test device, it is characterised in that：Fire stove, some bearings including a upper shed, Component and sealing structure for simulation tunnel top plate；Fire stove, component and the sealing device surround the stove to form a sealing Thorax；The bearing is erected in inside the burner hearth, has identical height with the furnace wall of the fire stove；The component is placed on the bearing；The sealing structure includes 4 bells being staggeredly placed and for sealing the space between bell and the fire stove at least One refractory brick.
- A kind of 2. tunnel roof fire resistance test device according to claim 1, it is characterised in that：Also include anti-guncotton It is paperwrapped in the outside wall surface of the bearing.
- A kind of 3. tunnel roof fire resistance test device according to claim 2, it is characterised in that：The top of the bearing Portion and/or inside are also equipped with reinforcing bar.
- A kind of 4. tunnel roof fire resistance test device according to claim 1, it is characterised in that：The bearing quantity For 4, array placed in the middle is arranged in inside burner hearth.
- A kind of 5. tunnel roof fire resistance test device according to claim 1, it is characterised in that：The bottom of the component Face is rectangle, has four smooth sides, and the size configurations in component thickness direction are identical with prototype tunnel.
- A kind of 6. tunnel roof fire resistance test device according to claim 1, it is characterised in that：The sealing structure Also include being used for the anti-guncotton for clogging gap between the bell and refractory brick, the bell and component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599871.9U CN207036738U (en) | 2017-05-26 | 2017-05-26 | A kind of tunnel roof fire resistance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720599871.9U CN207036738U (en) | 2017-05-26 | 2017-05-26 | A kind of tunnel roof fire resistance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036738U true CN207036738U (en) | 2018-02-23 |
Family
ID=61470007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720599871.9U Active CN207036738U (en) | 2017-05-26 | 2017-05-26 | A kind of tunnel roof fire resistance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085006A (en) * | 2017-05-26 | 2017-08-22 | 华侨大学 | Tunnel roof fire resistance test device and method of testing |
-
2017
- 2017-05-26 CN CN201720599871.9U patent/CN207036738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085006A (en) * | 2017-05-26 | 2017-08-22 | 华侨大学 | Tunnel roof fire resistance test device and method of testing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105464669B (en) | Plenty water weak surrounding rock major long tunnel construction method | |
| Meng et al. | Support technology for mine roadways in extreme weakly cemented strata and its application | |
| CN104727466B (en) | Screw bolt-type and reinforcing bar type curtain wall brick exterior wall | |
| CN106245821B (en) | A kind of lightweight steel construction lightweight concrete prefabrication and assembly construction wall and its construction method | |
| CN103835413A (en) | Foamed concrete bearing wall wrapped with wire mesh mortar boards and provided with line-shaped frame and construction method | |
| CN103835404A (en) | Foamed concrete bearing wall wrapped with wire mesh mortar boards and provided with L-shaped frame and construction method | |
| CN109403312A (en) | A kind of soft ground containing water hot setting method for protecting support | |
| CN207036738U (en) | A kind of tunnel roof fire resistance test device | |
| CN206737184U (en) | A kind of rammed earth feature wall | |
| Yuan et al. | The effect of burnt rock on inclined shaft in shallow coal seam and its control technology | |
| Wang et al. | Study on the performance of the new composite thermal insulation lining for the railway operational tunnel in cold regions | |
| CN111946357B (en) | Mine method tunnel simulation construction method considering red clay unloading influence | |
| CN107085006A (en) | Tunnel roof fire resistance test device and method of testing | |
| CN108425685A (en) | A kind of Concrete Crack Control method based on cast-in-place tunnel | |
| Ding et al. | Experimental and theoretical study on longitudinal deformation and internal force of shield tunnel under surcharge | |
| Chen et al. | Application of MgO concrete in China Dongfeng arch dam foundation | |
| CN103835401A (en) | Foamed concrete bearing wall wrapped with wire mesh mortar boards and provided with cross-shaped frame and construction method | |
| Zhao et al. | Comparative study of novel backfill coupled heat exchangers using different waste materials in underground stopes | |
| CN111257513A (en) | Continuous filling experimental device and method for cement cementing material | |
| CN108918254A (en) | Simulate the experimental rig and method of Shield-bored tunnels section of jurisdiction primary stress | |
| Bamonte et al. | Crack patterns in double-wall industrial masonry chimneys: Possible causes and numerical modelling | |
| CN204461080U (en) | A kind of high-strength climbing prolongs formula double plate shell hasp furnace lining structure | |
| CN207093141U (en) | A kind of underground airtight wall with biological modeling self-healing performance | |
| CN204808739U (en) | Simulation rib | |
| CN205934688U (en) | Arch bridge structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |