CN204940134U - A kind of steel trestle construction installation - Google Patents
A kind of steel trestle construction installation Download PDFInfo
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- CN204940134U CN204940134U CN201520706611.8U CN201520706611U CN204940134U CN 204940134 U CN204940134 U CN 204940134U CN 201520706611 U CN201520706611 U CN 201520706611U CN 204940134 U CN204940134 U CN 204940134U
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Abstract
The utility model discloses a kind of steel trestle construction installation, it is characterized in that: steel trestle refers to the steel trestle having advanced whole bridge construction from one end steel trestle to other end steel trestle one by one, one across steel trestle being formed next across beret truss beam of encorbelmenting on completed; Position-limited rack and percussive drill are by double-hook i iron and screw-thread steel is U-shaped to fasten at next across encorbelmenting on beret truss beam, make the plan-position in the position-limited rack of encorbelmenting be on next plan-position across steel trestle steel pipe pile; In position-limited rack, place steel pile casting, Churn drill tup hammering basement rock in steel pile casting forms stake holes.The utility model is for the execution conditions of current and riverbed oblique rock surface rapidly, do not need by constructor's underwater operation drilling by blasting trestle pipe pile foundation, the marine equipments such as boats and ships are not needed to enter scene, avoid the potential safety hazard of operating personnel and boats and ships operation under flow condition rapidly, reduce engineering cost, improve working security.
Description
Technical field
The utility model relates to a kind of steel trestle construction installation, be more particularly a kind of in current rapidly, riverbed is intectate inclination basement rock and boats and ships cannot enter the steel trestle construction installation of construction area.
Background technology
Steel trestle conventional construction method adopts steel pipe pile and beret truss as major bearing structures, and on-the-spot reassembling type erection, namely utilizes crawler crane at the head set up across on trestle, hole-specifically inserted to play Conveyor belt, lifting bridge deck structure, completes one across rear, crawler crane move to next across, push ahead construction by cross.But, adopt traditional steel trestle construction method, under water impact rapidly, trestle steel pipe pile is location difficulty when inserted to play, riverbed is inclination bedrock surface, and crawler crane coordinates vibration hammer cannot squeeze in rock by steel pipe column, cannot ensure the stability of trestle vertical and horizontal.
Yongjing County, Gansu Yanguoxia Yellow River Bridge is positioned at yanguoxia hydropower station dam downstream and is about 700m, in eight Pan Xia Reservoir of Hydropower Stations, construction period is on the occasion of summer, power station release floodwatering flow reaches 6.5m/s rapidly, depth of water 6-8m, washing away year in year out cause top layer, bridge bridge site riverbed intectate, for middle weathering strength of sandstone 800Kpa and bedrock surface inclination big rise and fall.In Reservoir of Hydropower Station, boats and ships cannot enter.Under the ambient conditions of Reservoir of Hydropower Station current, riverbed intectate inclined rock base rapidly, conventional steel trestle construction method cannot ensure its safety of structure.
Utility model content
The utility model is the weak point for avoiding existing for above-mentioned prior art, provides a kind of steel trestle construction installation, to ensure the safety of structure of the steel trestle of constructing under the ambient conditions of Reservoir of Hydropower Station current, riverbed intectate inclined rock base rapidly.
The utility model is that technical solution problem adopts following technical scheme:
The feature of the utility model steel trestle construction installation is: described steel trestle refers to the steel trestle having advanced whole bridge construction from one end steel trestle to other end steel trestle one by one, and one across steel trestle being formed next across beret truss beam of encorbelmenting on completed; Position-limited rack and percussive drill are by double-hook i iron and screw-thread steel is U-shaped to fasten at next across encorbelmenting on beret truss beam, make the plan-position in the position-limited rack of encorbelmenting be on next plan-position across steel trestle steel pipe pile; In described position-limited rack, place steel pile casting, Churn drill tup hammering basement rock in steel pile casting forms stake holes.
The feature of the utility model steel trestle construction installation is also: arrange three double-hook i iron as lower cross-arm, described lower cross-arm is placed on next across encorbelmenting on beret truss beam, utilizes the U-shaped card of lower floor's screw-thread steel next to be fixedly connected with lower cross-arm across beret truss beam of encorbelmenting; Position-limited rack fastens on described lower cross-arm afterbody is U-shaped by middle level screw-thread steel; Arrange two double-hook i iron as upper cross-arm, described upper cross-arm is placed on position-limited rack, utilizes screw-thread steel U-shaped card in upper strata to be fixedly connected with position-limited rack by upper cross-arm; The U-shaped card of screw-thread steel is adopted to be fixedly connected with upper cross-arm by arranged side by side two percussive drill pedestal channel-section steels.
The utility model be at current rapidly, the complex condition of riverbed intectate, oblique rock surface, adopt Churn drill spacing hammering bedrock surface pore-forming, early strong retardation setting type C50 concrete is built in hole, crawler crane and vibration hammer is used to implant in concrete by trestle steel pipe pile foundation before treating concrete initial set, beam and bridge floor are in length and breadth installed again, push ahead construction by cross, be i.e. the steel trestle construction method of " fishing type implantation ", compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model be encorbelment Bailey beam adopts Churn drill hammering basement rock pore-forming to build concrete after implant steel pipe pile, for the execution conditions that face, riverbed is inclination exposed bedrock, do not need constructor's bursting work pore-forming under water, avoid the potential safety hazard of operating personnel at torrent subaqueous work, guarantee safe construction.
2, the utility model Bailey beam adopts double-hook i iron and U-shapedly fastens position-limited rack encorbelmenting, and fixes steel pile casting, guarantee that the one-tenth hole site of trestle steel pipe pile foundation under lotic water impacts is accurate, guarantee the structural safety of trestle by firm position-limited rack.
3, the utility model Bailey beam adopts double-hook i iron and U-shapedly fastens percussive drill encorbelmenting, and avoids and use large-scale pile driving barge in Reservoir of Hydropower Station, reduce engineering cost.
Accompanying drawing illustrates:
Fig. 1 is the utility model Construction State one facade structures schematic diagram;
Fig. 2 is the utility model Construction State two facade structures schematic diagram;
Fig. 3 is Fig. 2 interior joint A structural representation;
Fig. 4 is Fig. 2 interior joint B structural representation;
Fig. 5 is Fig. 2 interior joint C-structure schematic diagram;
Fig. 6 is Fig. 2 interior joint D structural representation;
Number in the figure: 1 head is across steel trestle, and 2 second across beret truss beam of encorbelmenting, 2a second is across residue longeron beret truss, and 2b the 3rd is across beret truss beam of encorbelmenting, 3 position-limited racks, cross-arm under 4a, the upper cross-arm of 4b, the U-shaped card of 5a lower floor screw-thread steel, the U-shaped card of 5b middle level screw-thread steel, the U-shaped card of 5c upper strata screw-thread steel, the U-shaped card of 5d screw-thread steel, 6 steel pile casting, 7 stake holes, 8 concretes, 9 second across steel pipe pile, 10 crossbeam i iron, 11 bridge deck, 12 crawler cranes, 13 percussive drills, 14 next across beret truss beam of encorbelmenting, 15 percussive drill pedestal channel-section steels.
Detailed description of the invention
See Fig. 1 and Fig. 2, in the present embodiment, the form of structure of steel trestle construction installation is: steel trestle refers to the steel trestle having advanced whole bridge construction from one end steel trestle to other end steel trestle one by one, and one across steel trestle being formed next across beret truss beam of encorbelmenting on completed; Position-limited rack 3 and percussive drill are by double-hook i iron and screw-thread steel is U-shaped to fasten at next across encorbelmenting on beret truss beam, make the plan-position in the position-limited rack 3 of encorbelmenting be on next plan-position across steel trestle steel pipe pile; In position-limited rack 3, place steel pile casting 6, Churn drill tup hammering basement rock in steel pile casting 6 forms stake holes 7.
As shown in Figure 1, Figure 3 and Figure 4, arrange three double-hook i iron as lower cross-arm 4a, lower cross-arm 4a is placed on next across encorbelmenting on beret truss beam 14, utilizes lower floor's screw-thread steel U-shaped card 5a next to be fixedly connected with lower cross-arm 4a across beret truss beam 14 of encorbelmenting; Position-limited rack 3 is fixed on lower cross-arm 4a by middle level screw-thread steel U-shaped card 5b at afterbody.
As shown in Figure 1 and Figure 5, arrange two double-hook i iron as upper cross-arm 4b, upper cross-arm 4b is placed on position-limited rack 3, utilizes upper strata screw-thread steel U-shaped card 5c to be fixedly connected with position-limited rack 3 by upper cross-arm 4a; Screw-thread steel U-shaped card 5d is adopted to be fixedly connected with upper cross-arm 4b by arranged side by side two percussive drill pedestal channel-section steels 15.
Amounting to five length is that the double-hook i iron of 7m is respectively used to position-limited rack 3 to be fixedly connected on encorbelment on beret truss beam, and just percussive drill 13 is fixed on position-limited rack 3.
To make diameter be the steel pile casting 6 of 1m is two, steel pile casting 6 for the protection of steel pipe pile before anchoring concrete reaches intensity from washing away, the corresponding position-limited rack 3 arranged also is two, for fixing steel pile casting 6, accurate to guarantee steel pipe pile position.
As depicted in figs. 1 and 2, the steel trestle construction method that in the present embodiment, the spacing pore-forming of Churn drill is implanted in conjunction with crawler crane is carried out as follows:
Step 1: construction is first across steel trestle 1 on bank, and crawler crane 12 moves at head across on steel trestle 1 is that 600cm second is across beret truss beam 2 of encorbelmenting at head across installation length on steel trestle 1.
Step 2: position-limited rack 3 and percussive drill 13 are fixed on described second across encorbelmenting on beret truss beam 2 by double-hook i iron and screw-thread steel U-shaped card 5d, makes the plan-position in the position-limited rack 3 of encorbelmenting be in second across on the plan-position of steel pipe pile; The steel pile casting 6 that diameter is 1m is placed in position-limited rack 3, the tup of percussive drill diameter 0.8m is placed in steel pile casting 6, percussive drill 13 spacing hammering basement rock in steel pile casting 6 forms the stake holes 7 that diameter is 0.8m, in stake holes 7, build slow setting early-strength C50 concrete 8, before concrete 8 initial set, utilize crawler crane 12 and vibration hammer to be 0.63m by diameter second builds in the stake holes 7 of concrete 8 across steel pipe pile 9 implantation; Through about 24 hours, when test cube in the same condition intensity reaches C20, be namely judged as reaching C20 at stake holes 7 Nei Tong Final 8 degree, adopt crawler crane 12 to coordinate vibration hammer to extract steel pile casting 6, complete second across the construction of steel pipe pile foundation.Subsequently, disassemble the U-shaped card of each screw-thread steel successively, and utilize crawler crane to hang out percussive drill, position-limited rack and each double-hook i iron.
Step 3: second across steel pipe pile 9 setting up crossbeam i iron 10, length is 300cm second is the 3rd of 600cm the across the beret truss beam 2b that encorbelments across residue longeron beret truss 2a, the second bridge panel 11 and length, in Specific construction, second is an integrally-built beret truss beam across residue longeron beret truss 2a and the 3rd across the beret truss beam 2b that encorbelments, length is 900cm, while lifting second is across residue longeron beret truss 2a, namely form the 3rd across the beret truss beam 2b that encorbelments.
Step 4: by the mode of step 2 and step 3 by position-limited rack and percussive drill by double-hook i iron with screw-thread steel is U-shaped to fasten the 3rd across encorbelmenting on beret truss beam 2b, carry out the 3rd across the construction of steel pipe pile; The 3rd across steel pipe pile being installed crossbeam i iron, the 3rd across residue longeron beret truss, the 3rd bridge panel and the 4th across beret truss beam of encorbelmenting, complete the 3rd across the construction of steel trestle; Advance each across steel trestle one by one with this, until complete the construction of whole steel trestle.
In concrete enforcement, the diameter of steel pipe pile is 0.63m, wall thickness is 12mm; The length of single hole steel trestle is 9m; Comprising second across beret truss beam 2 and the 3rd of encorbelmenting is 2/3rds of the length of beret truss beam in single span steel trestle across the cantilever span of the beret truss beam of respectively encorbelmenting of the beret truss beam 2b that encorbelments, beret truss beam is six routine parallel arranged, every two row beret truss beams connect into entirety by brace, spacing is 0.9m, and absolute altitude at the bottom of the hole of stake holes 7 is positioned at below face, riverbed absolute altitude 1.5m position.
In the pore forming process of stake holes 7, boring is stopped when hole depth reaches setting absolute altitude, reacting cycle foul water pump is adopted to be drained by boring mud only in hole, the concrete 8 of building in stake holes 7 is slow setting early-strength C50 concrete, before concrete initial set, adopt crawler crane and vibration hammer to be inserted in by steel pipe pile in concrete 8, the slow setting early-strength C50 concrete of building in percussive drill hammering basement rock pore-forming, before concrete initial set, adopt crawler crane and vibration hammer to be implanted by steel pipe pile, concrete is made to reach the time shorten of design strength C20 in 24 hours, guarantee that the steel pipe pile be implanted in hole can form entirety with face, riverbed basement rock, steel pipe pile can resist the impact of lotic water.
In concrete enforcement, steel trestle construction installation will pass through midas Structure Checking Method, meets the requirement about steel trestle intensity, rigidity and stability in specification.
The present embodiment is for the execution conditions of current and riverbed oblique rock surface rapidly, do not need by constructor's underwater operation drilling by blasting trestle pipe pile foundation, boats and ships are not needed to enter scene, avoid the potential safety hazard of operating personnel and boats and ships operation under flow condition rapidly, reduce engineering cost, improve working security.
Claims (2)
1. a steel trestle construction installation, is characterized in that: described steel trestle refers to the steel trestle having advanced whole bridge construction from one end steel trestle to other end steel trestle one by one, and one across steel trestle being formed next across beret truss beam of encorbelmenting on completed; Position-limited rack (3) and percussive drill are by double-hook i iron and screw-thread steel is U-shaped to fasten at next across encorbelmenting on beret truss beam, make the plan-position in the position-limited rack of encorbelmenting (3) be on next plan-position across steel trestle steel pipe pile; In described position-limited rack (3), place steel pile casting (6), Churn drill tup hammering basement rock in steel pile casting (6) forms stake holes (7).
2. steel trestle construction installation according to claim 1, it is characterized in that: three double-hook i iron are set as lower cross-arm (4a), described lower cross-arm (4a) is placed on next across encorbelmenting on beret truss beam, utilizes the U-shaped card of lower floor's screw-thread steel (5a) next to be fixedly connected with lower cross-arm (4a) across beret truss beam of encorbelmenting; Position-limited rack (3) is fixed on described lower cross-arm (4a) at afterbody by the U-shaped card of middle level screw-thread steel (5b); Two double-hook i iron are set as upper cross-arm (4b), described upper cross-arm (4b) is placed on position-limited rack (3), utilizes the U-shaped card of upper strata screw-thread steel (5c) to be fixedly connected with position-limited rack (3) by upper cross-arm (4b); The U-shaped card of screw-thread steel (5d) is adopted to be fixedly connected with upper cross-arm (4b) by arranged side by side two percussive drill pedestal channel-section steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520706611.8U CN204940134U (en) | 2015-09-11 | 2015-09-11 | A kind of steel trestle construction installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520706611.8U CN204940134U (en) | 2015-09-11 | 2015-09-11 | A kind of steel trestle construction installation |
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| CN204940134U true CN204940134U (en) | 2016-01-06 |
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| CN201520706611.8U Expired - Fee Related CN204940134U (en) | 2015-09-11 | 2015-09-11 | A kind of steel trestle construction installation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133506A (en) * | 2015-09-11 | 2015-12-09 | 中铁四局集团有限公司 | Steel trestle construction method and facility with percussion drill limiting pore-forming implantation and crawler crane combined |
| CN108797323A (en) * | 2018-08-24 | 2018-11-13 | 中国建筑局（集团）有限公司 | A kind of steel trestle suitable for hardpan |
| CN110029653A (en) * | 2018-08-08 | 2019-07-19 | 中建六局土木工程有限公司 | A kind of jackstone seabed foundations steel pipe pile foundation processing method |
-
2015
- 2015-09-11 CN CN201520706611.8U patent/CN204940134U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133506A (en) * | 2015-09-11 | 2015-12-09 | 中铁四局集团有限公司 | Steel trestle construction method and facility with percussion drill limiting pore-forming implantation and crawler crane combined |
| CN106192774A (en) * | 2015-09-11 | 2016-12-07 | 中铁四局集团有限公司 | A kind of steel trestle construction installation |
| CN110029653A (en) * | 2018-08-08 | 2019-07-19 | 中建六局土木工程有限公司 | A kind of jackstone seabed foundations steel pipe pile foundation processing method |
| CN108797323A (en) * | 2018-08-24 | 2018-11-13 | 中国建筑局（集团）有限公司 | A kind of steel trestle suitable for hardpan |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |