CN202659250U - Novel insert type prestress grouting steel pipe concrete node - Google Patents
Novel insert type prestress grouting steel pipe concrete node Download PDFInfo
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- CN202659250U CN202659250U CN 201220330561 CN201220330561U CN202659250U CN 202659250 U CN202659250 U CN 202659250U CN 201220330561 CN201220330561 CN 201220330561 CN 201220330561 U CN201220330561 U CN 201220330561U CN 202659250 U CN202659250 U CN 202659250U
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- steel tube
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Abstract
The utility model discloses a novel insert type prestress grouting steel pipe concrete node which comprises a stair-step first steel pipe, wherein the end, which has a relatively small diameter, of the first steel pipe is inserted into another steel pipe; a rubber pad is arranged on an end socket plate at the end in another steel pipe; the end, which has a relatively small diameter, of the first steel pipe is in contact with the rubber pad; lug plates are arranged on the outer walls of the first steel pipe and another steel pipe; and the lug plates of the two steel pipes are connected through a connection plate. The novel insert type prestress grouting steel pipe concrete node is high in flexibility, small in occupied space and is relatively convenient to assemble on spot; and the spot welding amount is reduced.
Description
Technical field
The utility model relates to a kind of building technology, especially a kind of new plug-in prestressed grouting concrete filled steel tube node.
Background technology
At present, the mode of tunnel (lane) road supporting mainly contains bolt support, supporting steel grating, U-shaped steel arch frame supporting etc.The mode of the bolt support exists wet trade many, and length consuming time is polluted and heavily waited deficiency; Connecting between the supporting steel grating member all is welding, and on-the-spot welding amount is large, also median septum need be set, and steel using amount is larger; U-shaped steel arch frame supporting existence is combined not tight with country rock, can not effectively bring into play bearing capacity, and the problems such as side direction unstability easily occur.Thin wall steel tube concrete has the bearing capacity height as a kind of novel with (lane) road support pattern, and steel using amount is little, and on-the-spot welding amount is low, processes the advantages such as easy for installation.Telescopic distortion can't occur with country rock, so that country rock and concrete filled steel tube are difficult to effective co-operation for being rigidly connected in the connected node of conventional thin wall steel tube concrete simultaneously under the pressure from surrounding rock effect.Therefore the connected node that requires the thin wall steel tube concrete support unit also will have certain flexible to discharge the subsidiary stress that shoulder bed effects produces when satisfying requirement for bearing capacity.The present invention improves traditional thin wall steel tube concrete method of attachment namely for this technical requirements.
The connected mode of thin wall steel tube concrete member mainly is welded to connect at present, and flange connects and grouting sleeve connects.It is larger to be welded to connect rigidity, but contractibility is poor, and because of the scene welding, weld defect easily weakens the bearing capacity of thin-wall steel tube.The flange connection does not have contractibility, and the space that flange joint takies is many, inconvenient on-the-spot the installation.Grouting sleeve connects the connection that is applied to the earliest the offshore platform foundation part, usually introduces expansion prestressing force for the co-operation that guarantees steel pipe and Behavior of Hardened Cement Paste in cement, forms the prestressed grouting sleeve pipe.This connected mode is to be made of the steel pipe of different-diameter and prestressing force cement paste, steel pipe links together by expansion cement slurry, cement paste is subject to the constraint of steel pipe in expansion process, between steel pipe and cement, form precompression, both are connected as one closely, but its retractility is minimum, can't satisfy tunnel (lane) road supporting requirement.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of new plug-in prestressed grouting concrete filled steel tube node is provided, and it has, and scalability is good, and it is little to take up room, so that on-the-spot splicing is convenient, has reduced the Site Welding amount.
For achieving the above object, the utility model adopts following technical proposals:
A kind of new plug-in prestressed grouting concrete filled steel tube node, comprise that becomes stair-stepping first steel pipe, the first diameter of steel tube is inserted in the second steel pipe than small end, end cap plate in the second steel pipe is provided with rubber pad, the first diameter of steel tube contacts with rubber pad than small end, be equipped with otic placode on the first steel pipe and the second outer wall of steel pipe, the otic placode between described two steel pipes connects by junction plate.
Described rubber pad is the GYZ laminated rubber bearing, is provided with three-ply plate in it.
Described junction plate is provided with elliptical aperture.
Be filled with expansive cement in the slit between described the first steel pipe and the second steel pipe tube wall.
The slit at described the second steel tube end part and the first steel pipe ladder place adopts the fire-fighting clay of antiseep to cram.
Described the first steel pipe inserts the interior length of the second steel pipe and is 30 times of its wall thickness.
During on-the-spot splicing steel pipe, first the first steel pipe is inserted in the second steel pipe, make the first steel tube end part and the rubber pad that sticks in advance the second steel tube end part (add stick on epoxide-resin glue on the second steel tube end part head plate man-hour at steel pipe) close contact, again with erection bolt the otic placode bolt on the junction plate that has elliptical aperture and the two sections outer wall of steel pipe together, finish the Primary Location of two sections steel pipes, until on-the-spot in described two steel pipes concrete perfusion complete after, again the expansion cement slurry of certain match ratio is poured in the slit between described two steel pipes, be connected into two sections steel pipe connectings as a whole.
Expansive cement is formulated by certain match ratio by cement, sand, expansion agent, water and other Admixtures, and it is prior art, does not repeat them here.Expansive cement utilizes the dilatancy of the dilatant of hydration reaction generation to compensate the contraction of cement self, can improve ordinary Portland cement characteristic easy to crack.
The utility model is based on the high good characteristic of grouting sleeve ultimate bearing capacity of joints, again it is improved, be provided with rubber pad in the connection end, the modulus of elasticity of rubber pad is low than concrete and steel all, therefore improve the scalability of connected node, be conducive to country rock and thin wall steel tube concrete acting in conjunction.Thin-wall steel tube and cement paste contact surface are carried out blasting treatment, also shear key can be set in case of necessity, with the mechanical snap power between enhancing steel pipe and the cement paste, thereby make both better jointly stressed.This novel joint connecting method has reduced the Site Welding amount so that on-the-spot splicing is convenient, has preferably economic effect.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that two steel pipes cooperate schematic diagram;
Wherein 1. otic placodes, 2. erection bolt, 3. rubber pad, 4. the second steel tube end part head plate, 5. the second steel pipe, 6. the first steel pipe, 7. junction plate, 8. the first steel pipeline sealing end plate, 9. fire-fighting clay.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, 2, new plug-in prestressed grouting concrete filled steel tube node, comprise that becomes stepped first steel pipe 6, the first steel pipe 6 diameters are inserted in the second steel pipe 5 than small end, the second steel tube end part head plate 4 is provided with rubber pad 3, the first steel pipe 6 diameters contact with rubber pad 3 than small end, are equipped with otic placode 1 on the first steel pipe 6 and the second outer wall of steel pipe, and the otic placode 1 between described two steel pipes connects by junction plate 7.Junction plate 7 is provided with elliptical aperture.The second steel tube end part head plate 4 all adds at steel pipe with the first steel pipeline sealing end plate 8 and is welded on man-hour on the corresponding steel pipe.Spillage when preventing the cement injection mortar can be crammed with fire-fighting clay 9 in bottom, inner and outer pipes slit.
Two sections thin-wall steel tube support units that will connect, the second steel pipe 5 diameter 159mm, the first steel pipe 6 diameter 108mm.The first steel pipe 6 overall lengths are 250mm, and its length L of inserting the second steel pipe 5 is 230mm, is about 30 times of the first thickness of steel pipe.The first steel pipe 6 outer walls and the second steel pipe 5 inwalls are all done blasting treatment man-hour adding.The second steel tube end part head plate 4 places stick on the head plate center with the SK-138 epoxide-resin glue with round rubber pad 3.The GYZ laminated rubber bearing that rubber pad 3 selects bridge to use, rubber pad diameter 140mm, thick 20mm, in establish 3 layers of steel plate.
Concrete method of attachment:
Step 1, preparation expansive cement mortar mix the expansive cement siccative of 20Kg and the water of 5.7Kg, stir with vertical agitator, make cement mortar have sufficient flowability.
Step 2, the first steel pipe 6 is inserted the second steel pipe 5, rubber pad 3 close contacts that the end that makes the first steel pipe 6 and the second steel pipe 5 are interior.
Step 3, with both sides otic placode 1 aligned in position on described two steel pipes, with the M14 bolt with 2 junction plate 7(as shown in Figure 2) and otic placode 1 fixing, finish tentatively fixing of two sections thin-wall steel tubes.
Step 4, in described two steel pipes concrete perfusion.
Step 5, the expansion cement slurry that configures is stirred in the slit between the full outer and inner tube of rear perfusion, the fire-fighting clay 9 of the slit employing antiseep at the second steel tube end part and the first steel pipe ladder place is crammed, under 20 ℃ condition maintenance 3-7 days.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (6)
1. new plug-in prestressed grouting concrete filled steel tube node, it is characterized in that, comprise that becomes stair-stepping first steel pipe, the first diameter of steel tube is inserted in the second steel pipe than small end, end cap plate in the second steel pipe is provided with rubber pad, the first diameter of steel tube contacts with rubber pad than small end, is equipped with otic placode on the first steel pipe and the second outer wall of steel pipe, and the otic placode between described two steel pipes connects by junction plate.
2. concrete joint as claimed in claim 1 is characterized in that, described rubber pad is the GYZ laminated rubber bearing, is provided with three-ply plate in it.
3. concrete joint as claimed in claim 1 is characterized in that, described junction plate is provided with elliptical aperture.
4. concrete joint as claimed in claim 1 is characterized in that, is filled with expansive cement in the slit between described the first steel pipe and the second steel pipe tube wall.
5. concrete joint as claimed in claim 1 is characterized in that, the slit at described the second steel tube end part and the first steel pipe ladder place adopts the fire-fighting clay of antiseep to cram.
6. concrete joint as claimed in claim 1 is characterized in that, described the first steel pipe inserts the interior length of the second steel pipe and is 30 times of its wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330561 CN202659250U (en) | 2012-07-10 | 2012-07-10 | Novel insert type prestress grouting steel pipe concrete node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330561 CN202659250U (en) | 2012-07-10 | 2012-07-10 | Novel insert type prestress grouting steel pipe concrete node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659250U true CN202659250U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220330561 Expired - Lifetime CN202659250U (en) | 2012-07-10 | 2012-07-10 | Novel insert type prestress grouting steel pipe concrete node |
Country Status (1)
| Country | Link |
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| CN (1) | CN202659250U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437497A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Completely-concrete-filled composite tubular steel column and making technology thereof |
| CN106677809A (en) * | 2017-02-22 | 2017-05-17 | 天津大学 | Contractible fabricated steel plate support |
| CN106795766A (en) * | 2014-06-04 | 2017-05-31 | 奥菲奇内·马卡费里意大利有限责任公司 | Attachment means for connecting the structural detail of rib-shaped piece and network structure |
| CN114214918A (en) * | 2021-12-31 | 2022-03-22 | 山东大学 | Socket assembling type arch rib, arch bridge, manufacturing method and construction method |
-
2012
- 2012-07-10 CN CN 201220330561 patent/CN202659250U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437497A (en) * | 2013-07-18 | 2013-12-11 | 杭州博数土木工程技术有限公司 | Completely-concrete-filled composite tubular steel column and making technology thereof |
| CN103437497B (en) * | 2013-07-18 | 2016-08-31 | 浙江中隧桥波形钢腹板有限公司 | Concrete filled steel tube complete combination post and manufacturing process |
| CN106795766A (en) * | 2014-06-04 | 2017-05-31 | 奥菲奇内·马卡费里意大利有限责任公司 | Attachment means for connecting the structural detail of rib-shaped piece and network structure |
| CN106677809A (en) * | 2017-02-22 | 2017-05-17 | 天津大学 | Contractible fabricated steel plate support |
| CN114214918A (en) * | 2021-12-31 | 2022-03-22 | 山东大学 | Socket assembling type arch rib, arch bridge, manufacturing method and construction method |
| CN114214918B (en) * | 2021-12-31 | 2022-08-23 | 山东大学 | Socket assembling type arch rib, arch bridge, manufacturing method and construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
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| CX01 | Expiry of patent term |