CN210621476U - Segment prefabricated bent cap cantilever assembling construction device - Google Patents
Segment prefabricated bent cap cantilever assembling construction device Download PDFInfo
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- CN210621476U CN210621476U CN201921087037.7U CN201921087037U CN210621476U CN 210621476 U CN210621476 U CN 210621476U CN 201921087037 U CN201921087037 U CN 201921087037U CN 210621476 U CN210621476 U CN 210621476U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- 238000004873 anchoring Methods 0.000 claims abstract description 78
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 229920006335 epoxy glue Polymers 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 210000001364 upper extremity Anatomy 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 12
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
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- 238000009417 prefabrication Methods 0.000 description 5
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- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a segment precast bent cap cantilever assembling construction device, which comprises a main segment and a cantilever segment, wherein the construction device comprises a top surface anchoring device, a side surface anchoring device and a steel structure hanging frame, the top surface anchoring device comprises anchoring blocks and a plurality of top surface prestressed steel bars which are connected with the two anchoring blocks and are arranged in the transverse bridge direction; the side anchoring device comprises pre-buried anchoring components and side prestressed reinforcements which are connected with the end parts of the two pre-buried components at the same side and arranged in the transverse bridge direction; the steel structure stores pylon includes two stores pylon main parts and connects two the connecting piece and the pin rod subassembly that are of stores pylon main part and set up in the same direction as the bridge. The utility model has the advantages that: through pre-buried anchor assembly in prefabricated bent cap to installation equipment such as steel construction stores pylon on the cantilever section can target in place the hoist and mount of cantilever section and play the guide effect, top surface anchor and side anchor can be in the same place cantilever section and the anchor of main section temporary tie in moreover, play good transmission effect.
Description
Technical Field
The utility model relates to a bridge concrete bent cap construction technical field, concretely relates to construction equipment is assembled to prefabricated bent cap cantilever of festival section.
Background
At present, the construction of the concrete capping beam of the bridge is generally realized by a support cast-in-place method or an integral prefabrication and hoisting construction method. The precast concrete bent cap can obviously shorten the construction period and reduce the construction road occupying time by adopting the precast construction, and has the advantages of high quality, low safety risk, environmental protection and the like, so the precast concrete bent cap is applied to domestic and foreign urban bridges.
The urban viaduct with more than six lanes is mostly provided with a large cantilever capping beam form, the beam length and the beam weight of the capping beam are usually large, the integral prefabrication is often limited by the urban road transportation restriction requirement and the hoisting capacity of hoisting equipment, so that the integral prefabrication hoisting construction method cannot be implemented, and the sectional cantilever assembling construction method can solve the problem.
The segmental cantilever assembling construction method has been applied successfully in the bridge superstructure in large quantity, wherein the segmental joint can adopt the conventional epoxy glue joint, and the joint surface is provided with a concrete shear key. However, the construction method of the segment requires the use of a large bridge girder erection machine, including a bridge deck crane system for lifting the segment and a segment temporary anchoring system, which is very high in construction cost, complex in equipment disassembly and assembly, very low in turnover rate, long in construction flow time, and not beneficial to quick spreading and quick ending of the construction surface.
Disclosure of Invention
The utility model aims at providing a construction equipment is assembled to prefabricated bent cap cantilever of festival section according to the weak point of above-mentioned prior art, this construction equipment includes top surface anchor, side anchor and steel construction stores pylon, utilize the steel construction stores pylon of fixing on the cantilever section to guide the cantilever section and make its level take one's place, top surface anchor and side anchor can transmit the effort that the dead weight of cantilever section produced for the main section effectively, thereby realize the interim anchor to the cantilever section, accelerate concatenation efficiency.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a construction equipment is assembled to prefabricated bent cap cantilever of segmentation, prefabricated bent cap includes main section and cantilever section, its characterized in that construction equipment includes top surface anchor, side anchor and steel construction stores pylon, wherein:
the top surface anchoring device comprises anchoring blocks which are respectively and correspondingly arranged on the top surface of the main section and the top surface of the cantilever section, and a plurality of top surface prestressed reinforcements which are connected with the two anchoring blocks and arranged in the transverse bridge direction;
the side anchoring device comprises pre-buried anchoring components which are respectively and correspondingly arranged in the main section and the cantilever section and are arranged along the bridge direction, and side prestressed steel bars which are connected with the end parts of the two pre-buried anchoring components at the same side and are arranged along the transverse bridge direction;
the steel structure stores pylon is including setting up in two stores pylon main parts of two side upper limb portions of cantilever section and connect two the connecting piece and the pin rod subassembly that are in the same direction as the bridge and set up of stores pylon main part.
The embedded anchoring assembly comprises a plurality of embedded steel pipe groups for anchoring, wherein the embedded steel pipe groups are formed by embedded steel pipes arranged along the bridge direction, reinforcing steel bars for anchoring penetrate through the embedded steel pipes, and anchoring lug plates are fixedly arranged at exposed sections at two ends of the reinforcing steel bars for anchoring.
The number of pre-buried steel pipe is two, and two the pre-buried steel pipe is setting up from top to bottom and is located same vertical plane.
The front supporting end of the hanger main body extends out of the splicing surface of the cantilever section and is supported on the top surface of the main section, and the rear supporting end of the hanger main body is supported on the top surface of the cantilever section.
The lower part of stores pylon main part has been seted up the earhole, be provided with in the cantilever section and be the pre-buried steel pipe that sets up in the same direction as the bridge, the axis of pre-buried steel pipe passes the hole center in earhole, the round pin stick subassembly is including wearing to establish reinforcing bar and cover for the anchor in the pre-buried steel pipe are established hollow round pin stick outside the reinforcing bar for the anchor, the both ends installation of reinforcing bar for the anchor is fixed with the backing plate.
The top surface of the main section right below the front supporting end of the hanger main body is correspondingly pre-embedded with a front supporting pressure-bearing steel plate, and the top surface of the cantilever section right below the rear supporting end of the hanger main body is correspondingly pre-embedded with a rear supporting pressure-bearing steel plate.
The one-way tightening rod of vertical setting is installed to the preceding support end of stores pylon main part, one-way tightening rod include the internal thread steel pipe and with internal thread steel pipe assorted external screw thread rod iron.
Epoxy glue is coated on the splicing surfaces of the main section and the cantilever section
Shear keys are arranged on the splicing surfaces of the main section and the cantilever section at intervals.
The utility model has the advantages that: through pre-buried anchor assembly in prefabricated bent cap to installation equipment such as steel construction stores pylon on the cantilever section can target in place the hoist and mount of cantilever section and play the guide effect, top surface anchor and side anchor can be in the same place cantilever section and the anchor of main section temporary tie in moreover, play good transmission effect.
Drawings
FIG. 1 is a schematic structural view of a construction apparatus according to the present invention;
FIG. 2 is a schematic view of section A-A in FIG. 1;
FIG. 3 is a schematic structural view of the steel structure hanger of the present invention;
fig. 4 is a schematic structural view of the middle top surface anchoring device and the side surface anchoring device of the present invention;
FIG. 5 is a schematic view of the hanging process of the present invention, wherein the cantilever section on one side is spliced by the steel structure hanging rack;
FIG. 6 is a schematic view of the construction process for installing the top surface anchoring device and the side surface anchoring device of the present invention;
FIG. 7 is a schematic view of the hoisting process of the cantilever section on the other side of the present invention;
fig. 8 is a schematic diagram of the splicing of the cantilever sections on two sides and the main section in the office utility model.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example with reference to the accompanying drawings, for the understanding of those skilled in the art:
referring to fig. 1-8, the labels 1-22 in the figures are: pier stud 1, main section 2, cantilever section 3, stores pylon main part 4, pin rod subassembly 5, anchor piece 6, top surface prestressing steel 7, splice face 8, anchor otic placode 9, side prestressing steel 10, main section hoisting point 11, cantilever section hoisting point 12, pre-buried steel pipe 13 for the pin rod, reinforcing bar 14 for the pin rod, hollow pin rod 15, pre-buried steel pipe 16 for the side anchor, reinforcing bar 17 for the anchor, pre-buried steel pipe subassembly 18 for the anchor, one-way tightening rod 19, connecting piece 20, preceding support pressure-bearing steel sheet 21, back support pressure-bearing steel sheet 22.
Example (b): as shown in fig. 1 to 8, the embodiment specifically relates to a construction device for assembling cantilever of segment precast capping beam, which includes a top surface anchoring device, a side surface anchoring device and a steel structure hanging rack, wherein the steel structure hanging rack fixed on the cantilever segment is used for guiding the cantilever segment 3 to be horizontally in place, and the top surface anchoring device and the side surface anchoring device can effectively transmit acting force generated by self weight of the cantilever segment 3 to the main segment 2, thereby realizing temporary anchoring of the cantilever segment 3 and accelerating splicing efficiency.
As shown in fig. 1 to 4, the segment precast capping beam related in this embodiment includes a main segment 2 and two symmetrical cantilever segments 3, and the main segment 2 is hoisted and arranged above the pier stud 1; according to the hoisting structure of the main section 2, a main section hoisting point 11 is arranged on the top surface of the main section 2, and the main section hoisting point 11 is positioned on the gravity line of the main section 2; the top surface of the cantilever section 3 is provided with a cantilever section hanging point 12, and the cantilever section hanging point 12 is positioned on the gravity resultant force line of the cantilever section 3; shear keys are arranged on the splicing surfaces of the main section 2 and the cantilever section 3 at intervals and used for transferring the gravity borne by the cantilever section 3, and epoxy glue is also arranged on the splicing surfaces and used for bonding the main section 2 and the cantilever section 3 to ensure the close contact between the main section 2 and the cantilever section 3 and the transfer of force.
As shown in fig. 1 to 4, the construction apparatus in this embodiment includes a top surface anchoring device, a side surface anchoring device, and a steel structure hanger; the top surface anchoring device comprises anchoring blocks 6 correspondingly arranged on the top surfaces of the main section 2 and the cantilever section 3, namely, the main section 2 and the cantilever section 3 are respectively provided with one anchoring block 6, the connecting line of the two anchoring blocks 6 is in the same direction with the transverse bridge direction of the section prefabricated capping beam, the anchoring blocks 6 are concrete anchoring blocks, the anchoring blocks 6 are prefabricated simultaneously in the prefabrication process of the main section 2 and the cantilever section 3, and the setting positions and the specific sizes of the anchoring blocks 6 are selected and designed according to the self weight and the local pressure bearing principle of the cantilever section 3. Set up a plurality of anchor holes that lie in same water flat line on two anchor blocks 6, the inherent top surface prestressing steel 7 that is the horizontal bridge and sets up of anchor in the anchor hole that corresponds between two anchor blocks 6, the quantity and the length of top surface prestressing steel 7 are confirmed according to cantilever section 3's dead weight, and top surface prestressing steel 7 in this embodiment designs for 4 diameters are 40mm, length is 6 m's finish rolling screw-thread steel. The top surface anchoring device can be used for fixedly bonding the main section 2 and the cantilever section 3, so that part of gravity of the cantilever section 3 is transmitted to the main section 2 through the top surface anchoring device, and preliminary temporary fixation of the cantilever section 3 is realized.
As shown in fig. 1 to 4, the side anchoring device includes pre-embedded anchoring assemblies respectively disposed in the main section 2 and the cantilever section 3 in the bridge direction, and a side prestressed reinforcement 10 connected to the ends of the two pre-embedded anchoring assemblies at the same side and disposed in the transverse bridge direction. Specifically, a plurality of anchoring embedded steel pipe assemblies 18 are embedded in the anchoring embedded assembly, each anchoring embedded steel pipe assembly comprises a side anchoring embedded steel pipe 16 arranged in the main section 2 and the cantilever section 3 when the main section and the cantilever section are prefabricated, in order to ensure the accurate position of the side anchoring embedded steel pipe 16, a positioning plate (not shown in the figure) is embedded at each of two ends of the side anchoring embedded steel pipe, the side anchoring embedded steel pipes 16 are arranged along the bridge direction, and anchoring steel bars 17 which are also arranged along the bridge direction penetrate through the side anchoring embedded steel pipes; the number of the embedded steel pipe assemblies 18 for anchoring is designed and selected according to design settings, the self weight of the cantilever section 3 and the requirement of the minimum average compressive stress of the splicing surface, in the embodiment, two groups of the embedded steel pipe assemblies 18 for anchoring are specifically selected, and the two groups of the embedded steel pipe assemblies 18 for anchoring are vertically arranged and are positioned in the same vertical plane; the length of reinforcing bar 17 for the anchor surpasss the same direction as bridge width of corresponding position department main section 2 and cantilever section 3, and the both ends of reinforcing bar 17 for the anchor stretch out in main section 2 and cantilever section 3 promptly, and the anchor is fixed with anchor otic placode 9 with the section installation that exposes of reinforcing bar 17, and one then forms firm atress whole with two sets of anchor with pre-buried steel pipe assembly 18, and two then forms the anchor action point here, is convenient for wear to establish side prestressing steel bar 10. The anchor otic placode of two pre-buried anchor subassemblies with one side of prefabricated bent cap carries out the drawknot through side prestressing steel 10 between fixed promptly to transmit cantilever section 3's partial dead weight to main section 2 through side anchor, further realize fixing temporarily cantilever section 3.
As shown in fig. 1 to 4, the steel structure pylon includes two pylon main bodies 4, wherein the pylon main bodies 4 are in an inverted L shape and are symmetrically disposed at the upper edges of two non-spliced side surfaces of the cantilever sections 3, that is, the upper portions of the pylon main bodies 4 rest on the side edges of the segment precast capping beams, and the inner sides of the lower portions of the pylon main bodies 4 abut against the side walls of the segment precast capping beams. The upper parts of the two hanger main bodies 4 are fixedly connected by a connecting piece 20 crossing the top surface of the cantilever section 3, and according to the weight of the cantilever section 3, the connecting piece 20 in the embodiment specifically selects two finish rolling screw-thread steels with the diameter of 40 mm. The lower part of each hanger main body 4 is provided with an ear hole, the inside of the cantilever section 3 is provided with a pre-embedded steel pipe 13 for a pin rod, the pre-embedded steel pipe 13 for the pin rod is arranged along the bridge direction, and the axis of the pre-embedded steel pipe 13 passes through the hole centers of the ear holes of the two hanger main bodies 4; the lower parts of the two hanger main bodies 4 are fixed by pulling through the pin rod assemblies 5, specifically, the pin rod assemblies 5 comprise hollow pin rods 15 and pin rod reinforcing steel bars 14, the hollow pin rods 15 are sleeved on the peripheries of the pin rod reinforcing steel bars 14, and the pin rod assemblies 5 penetrate through the pin rod embedded steel pipes 13 and pass through the lug holes of the hanger main bodies 4; backing plates are installed at two ends of the reinforcing steel bar 14 for the pin rod, the hollow pin rod 15 is fastened in the reinforcing steel bar 14 for the pin rod through nuts, the hollow pin rod 6 is prevented from slipping, limited rotation of the hollow pin rod 6 is allowed, the rotation requirement of the steel structure hanger in the construction process is met, and the outer diameter of the hollow pin rod 15 and the ear hole diameter difference requirement of the hanger main body 4 are within 5 mm. The steel structure hanging rack can guide the cantilever section 3 to move horizontally and accurately place in the hoisting process of the cantilever section 3.
As shown in fig. 1-4, the preceding supporting end of stores pylon main part 4 stretches out in concatenation face 8, the preceding supporting end supports on the top surface of main part 2 promptly, then the back support end then supports on the top surface of cantilever section 3, one-way tightening rod 19 is installed to the preceding supporting end, and pass power through this one-way tightening rod 19, one-way tightening rod 19 includes internal thread steel pipe and assorted external screw thread steel bar with it, the smooth evagination of front end of external screw thread steel bar, can transmit vertical pressure, guarantee that vertical deformation is synchronous, can satisfy the position control demand of horizontal direction simultaneously. The main section 2 is pre-embedded with a front support bearing steel plate 10 at a corresponding position under the front support end of the hanger main body 4, and the cantilever section 2 is pre-embedded with a rear support bearing steel plate 11 at a corresponding position under the rear support end of the hanger main body 4, so that structural damage of the segment prefabricated capping beam caused by unnecessary contact of the hanger main body 4 and the segment prefabricated capping beam is prevented. Distance between the fulcrum of the preceding supporting end of stores pylon main part 4 and the fulcrum of back supporting end is 2.5m in this embodiment, the fulcrum of preceding supporting end is 0.5m to the distance of concatenation face 8, the fulcrum of back supporting end is 2m to the distance of concatenation face 8, through space numerical analysis, the steel construction stores pylon is greater than 100t at the maximum design bearing capacity of round pin stick subassembly 5 department, even the shear force key of concatenation face department is whole not participated in the 3 dead weights of transmission cantilever section, also can ensure that the dead weight of cantilever section 3 can be through the whole main section 2 that transmit of steel construction stores pylon.
As shown in fig. 5 to 8, the installation and use method of the cantilever segment assembling construction device for the segment precast capping beam in this embodiment is as follows:
(1) the main section 2 and the cantilever section 3 are prefabricated, and an anchoring block 6, a pre-buried steel pipe 13 for a pin rod and a pre-buried steel pipe 16 for side anchoring are arranged in the prefabrication process.
(2) The main section 2 is hoisted in place and fixed, a steel structure hanging rack is installed, two hanging rack main bodies 4 are arranged on the side edge of the cantilever section 3 in the installation process, then a hollow pin rod 15 is sleeved on the periphery of a pin rod reinforcing steel bar 14 and sequentially penetrates through an ear hole of the hanging rack main body 4 and a pin rod embedded steel pipe 13 and is anchored, and the primary installation of the steel structure hanging rack is completed; and then, the connecting pieces 20 between the hanger main bodies 4 are installed and tensioned and fixed to balance the horizontal force generated by the eccentric load on the hanger main bodies 4 during construction, so that the two hanger main bodies 4 are integrated.
(3) And installing an anchoring embedded steel pipe assembly 18, namely penetrating the anchoring steel bar 17 into the side anchoring embedded steel pipe 16, and fixedly installing an anchoring lug plate at the exposed section of the anchoring steel bar 17 and fixing the anchoring lug plate by using a screw cap.
(4) Coating epoxy glue on the splicing surface 8, hoisting the cantilever section 3 by using a ground crane within 30 minutes, and gradually moving downwards from the upper space after hoisting, wherein the front supporting end of the steel structure hanging rack 4 is positioned above the main section 2; then, the cantilever section 3 is guided by a steel structure hanging rack to move horizontally, so that the cantilever section 3 is in position initially, the splicing surfaces 8 of the cantilever section 3 and the main section 2 are basically flush, and the one-way tightening rod 19 is aligned with the front support pressure-bearing steel plate 21; the one-way tightening rod 19 is pre-fastened to ensure the close contact between the steel structure hanging rack and the main section 2 and the force transmission.
(5) Installing lateral prestressed reinforcements 10 by adopting a ground climbing machine, symmetrically tensioning the lateral prestressed reinforcements 10 on two sides of the prefabricated bent cap to a designed value, and then anchoring; the unidirectional tightening rod 19 is fastened again, so that the unidirectional tightening rod is supported on the front support pressure-bearing steel plate 21, and the primary locking of the cantilever section 3 is completed;
(6) mounting top surface prestressed reinforcements 7, and symmetrically tensioning the top surface prestressed reinforcements 7 in groups, wherein the top surface prestressed reinforcements 7 in the embodiment comprise two groups, and each group comprises two reinforcements; the first group of top prestressed reinforcements 7 are tensioned in three stages, each stage is tensioned to a design value and then is loaded for a period of time, then the design hoisting weight of the ground crane is correspondingly unloaded, and the next stage of tensioning is carried out after the loading is continuously carried for a period of time until the prestressed reinforcements reach the tensioning design value and are anchored; the second group of top prestressed reinforcements 7 are tensioned in two stages, each stage is tensioned to a design value and then is loaded for a period of time, then the design hoisting weight of the ground crane is correspondingly unloaded, the loading is continuously carried out for a period of time, and then the next stage of tensioning is carried out until the top prestressed reinforcements 7 reach the tensioning design value and then are anchored; at the moment, the ground crane can unload the dead weight of all the cantilever sections 3, and the cantilever sections 3 and the main section 2 are completely and temporarily solidified; cleaning and scraping the extruded epoxy glue at the edge of the splicing surface 8 in time; through numerical analysis and calculation, tensile stress does not appear on the splicing surface 8 in the whole construction process, and after the temporary consolidation is completed, the average compressive stress on the joint surface 7 of the segment reaches 0.5Mpa, so that the stability of the temporary consolidation is ensured.
(7) And (3) installing the cantilever section 3 on the other side by adopting the process to finish the quick assembly of the prefabricated bent cap.
Top surface anchor, side anchor and steel construction stores pylon three combined action in this embodiment, with the gravity transmission to the main section 2 that cantilever section 3 received for can realize with the quick temporary fixation of main section 2 in 3 hoist and mount in-process of cantilever section, accelerate the efficiency of assembling of section prefabricated bent cap cantilever.
The beneficial effect of this embodiment is: through pre-buried anchor assembly in prefabricated bent cap to installation equipment such as steel construction stores pylon on the cantilever section can target in place the hoist and mount of cantilever section and play the guide effect, top surface anchor and side anchor can be in the same place cantilever section and the anchor of main section temporary tie in addition, play good transmission effect for concatenation efficiency has been accelerated.
Claims (9)
1. The utility model provides a construction equipment is assembled to prefabricated bent cap cantilever of segmentation, prefabricated bent cap includes main section and cantilever section, its characterized in that construction equipment includes top surface anchor, side anchor and steel construction stores pylon, wherein:
the top surface anchoring device comprises anchoring blocks which are respectively and correspondingly arranged on the top surface of the main section and the top surface of the cantilever section, and a plurality of top surface prestressed reinforcements which are connected with the two anchoring blocks and arranged in the transverse bridge direction;
the side anchoring device comprises pre-buried anchoring components which are respectively and correspondingly arranged in the main section and the cantilever section and are arranged along the bridge direction, and side prestressed steel bars which are connected with the end parts of the two pre-buried anchoring components at the same side and are arranged along the transverse bridge direction;
the steel structure stores pylon is including setting up in two stores pylon main parts of two side upper limb portions of cantilever section and connect two the connecting piece and the pin rod subassembly that are in the same direction as the bridge and set up of stores pylon main part.
2. The cantilever assembling construction device for the segmental precast capping beam according to claim 1, wherein the embedded anchoring assembly comprises an embedded steel pipe group for anchoring, which is composed of a plurality of embedded steel pipes arranged along a bridge direction, reinforcing steel bars for anchoring penetrate through the embedded steel pipes, and anchoring lug plates are fixedly installed at exposed sections at two ends of the reinforcing steel bars for anchoring.
3. The cantilever assembling construction device for the segmental precast capping beams as claimed in claim 2, wherein the number of the embedded steel pipes is two, and the two embedded steel pipes are vertically arranged and located in the same vertical plane.
4. The cantilever assembling construction device for the segmental precast capping beams according to claim 1, wherein a front supporting end of the hanger main body extends out of a splicing surface of the cantilever segment and is supported on a top surface of the main segment, and a rear supporting end of the hanger main body is supported on the top surface of the cantilever segment.
5. The cantilever assembling construction device for the segmental precast capping beam according to claim 4, wherein the lower part of the hanger main body is provided with an ear hole, an embedded steel pipe arranged along a bridge direction is arranged in the cantilever segment, a central axis of the embedded steel pipe penetrates through a hole center of the ear hole, the pin rod assembly comprises an anchoring steel bar arranged in the embedded steel pipe in a penetrating mode and a hollow pin rod arranged outside the anchoring steel bar in a sleeved mode, and backing plates are fixedly arranged at two ends of the anchoring steel bar.
6. The cantilever assembling construction device for the segmental precast capping beams according to claim 4, wherein a front support bearing steel plate is correspondingly pre-embedded on the top surface of the main segment right below the front support end of the hanger main body, and a rear support bearing steel plate is correspondingly pre-embedded on the top surface of the cantilever segment right below the rear support end of the hanger main body.
7. The cantilever assembling construction device for the segmental precast capping beams according to claim 4, wherein a vertically arranged one-way tightening rod is installed at the front supporting end of the hanger main body and comprises an internal thread steel pipe and an external thread steel bar matched with the internal thread steel pipe.
8. The cantilever assembling construction device for the segmental precast capping beams of claim 1, wherein epoxy glue is coated on the splicing surfaces of the main segment and the cantilever segment.
9. The cantilever assembling construction device for the segmental precast capping beams as claimed in claim 1, wherein shear keys are arranged on the splicing surfaces of the main segment and the cantilever segment at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087037.7U CN210621476U (en) | 2019-07-12 | 2019-07-12 | Segment prefabricated bent cap cantilever assembling construction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921087037.7U CN210621476U (en) | 2019-07-12 | 2019-07-12 | Segment prefabricated bent cap cantilever assembling construction device |
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| CN210621476U true CN210621476U (en) | 2020-05-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318342A (en) * | 2019-07-12 | 2019-10-11 | 上海城建市政工程（集团）有限公司 | A kind of precast segment bent cap free cantilever erection constructing device |
| CN114277683A (en) * | 2021-11-23 | 2022-04-05 | 中国建筑一局(集团)有限公司 | Large-gradient long-cantilever bridge deck pavement structure |
-
2019
- 2019-07-12 CN CN201921087037.7U patent/CN210621476U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318342A (en) * | 2019-07-12 | 2019-10-11 | 上海城建市政工程（集团）有限公司 | A kind of precast segment bent cap free cantilever erection constructing device |
| CN110318342B (en) * | 2019-07-12 | 2024-06-18 | 上海城建市政工程（集团）有限公司 | Construction equipment is assembled to prefabricated bent cap cantilever of festival section |
| CN114277683A (en) * | 2021-11-23 | 2022-04-05 | 中国建筑一局(集团)有限公司 | Large-gradient long-cantilever bridge deck pavement structure |
| CN114277683B (en) * | 2021-11-23 | 2024-03-19 | 中国建筑一局(集团)有限公司 | Large-gradient long-cantilever bridge deck pavement structure |
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