CN112479027A - Gantry crane prefabricated foundation and installation method thereof - Google Patents
Gantry crane prefabricated foundation and installation method thereof Download PDFInfo
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- CN112479027A CN112479027A CN202011460278.9A CN202011460278A CN112479027A CN 112479027 A CN112479027 A CN 112479027A CN 202011460278 A CN202011460278 A CN 202011460278A CN 112479027 A CN112479027 A CN 112479027A
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- prefabricated
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- gantry crane
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000002265 prevention Effects 0.000 claims description 6
- 238000009417 prefabrication Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 22
- 239000004567 concrete Substances 0.000 description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a gantry crane prefabricated foundation and an installation method thereof, relates to the technical field of constructional engineering, and solves the problems that a gantry crane cast-in-place foundation is long in construction period, multiple in working procedures and incapable of being reused. The technical scheme adopted by the invention is as follows: portal crane prefabricated basis, including the track with be banding prefabricated basis, prefabricated basis is formed by two section at least prefabricated section serial-type concatenations, prefabricated section is reinforced concrete structure, buries the splice bar underground in the prefabricated section, the one end of splice bar is worn out from the top surface of prefabricated section, the track set up in prefabricated basis the top surface and with splice bar fixed connection. The method for installing the prefabricated foundation of the gantry crane comprises the steps of prefabricating a prefabricated section of the prefabricated foundation of the gantry crane; after the prefabricated sections reach the design strength, splicing the prefabricated sections in series to form a prefabricated foundation, and fixing and installing a track on the top of the prefabricated foundation; and finally, forming the prefabricated foundation and the track into a whole for field installation. The method is suitable for quickly constructing the foundation of the gantry crane on the foundation with better geological conditions.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a gantry crane prefabricated foundation and an installation method thereof.
Background
The highway engineering relates to the prefabrication work of precast box girders, hollow slabs and T-shaped girders, and generally, concentrated prefabrication construction is carried out by constructing a precast girder yard after expropriating and removing on site. For the convenience of construction and for safety, most precast beam yards are installed and constructed by using gantry cranes.
The construction of a gantry crane foundation is an important premise for the installation of a gantry crane, the traditional construction process of the gantry crane foundation is that a construction unit carries out leveling and tamping on the gantry crane foundation, then a groove is excavated, a template is installed, a track foundation is poured, installation reinforcing steel bars or other embedded parts are conveniently connected with a gantry crane track, and after the track foundation reaches certain strength, a professional gantry crane installer installs the gantry crane.
The traditional construction process of the gantry crane foundation has the following defects: firstly, certain labor and materials are consumed for foundation pouring and embedded part installation, and a large amount of labor is consumed for operation of connection of the embedded part and the track. Secondly, the waiting time is long, the gantry crane installation needs to be carried out after the concrete foundation reaches a certain strength, and if the gantry crane installation is forced to be carried out when the strength of the concrete foundation does not meet the requirement in the construction period, cracks and fractures can occur on the concrete foundation. Thirdly, the position of the gantry crane rail has higher requirements on the traditional process construction, and once the rail foundation has deviation, the gantry crane walking gear cannot normally run on the rail, and the rail adjustment difficulty is higher. And fourthly, the concrete foundation and the track which are cast in situ are disposable, and can not be recycled after project construction is completed, and the track and the concrete foundation need to be dismantled, so that the method is labor-consuming, time-consuming and environment-friendly.
Disclosure of Invention
The invention firstly provides a gantry crane prefabricated foundation, and solves the problems that a gantry crane cast-in-place foundation has long construction period and multiple working procedures, and the cast-in-place foundation cannot be reused.
The technical scheme adopted by the invention for solving the technical problems is as follows: portal crane prefabricated basis, including the track with be banding prefabricated basis, prefabricated basis is formed by two section at least prefabricated section serial-type concatenations, prefabricated section is reinforced concrete structure, buries the splice bar underground in the prefabricated section, the one end of splice bar is worn out from the top surface of prefabricated section, the track set up in prefabricated basis the top surface and with splice bar fixed connection.
Further, the method comprises the following steps: and the two ends of the prefabricated section are respectively provided with mutually-matched dislocation preventing structures.
Specifically, the method comprises the following steps: the dislocation prevention structure is as follows: one end of the prefabricated section is concave, the other end of the prefabricated section is convex, and the concave and the convex are mutually matched.
Further, the method comprises the following steps: the positions of the prefabricated sections, which are close to the splicing end, are respectively provided with a connecting hole, a U-shaped screw rod is arranged between the connecting holes of two adjacent prefabricated sections, and two ends of the U-shaped screw rod are respectively provided with adaptive screw caps.
Specifically, the method comprises the following steps: the rails are connected with the connecting ribs in a welding mode, and the connecting ribs are located on two sides of the rails and are arranged in a crossed mode.
Specifically, the method comprises the following steps: the prefabricated section is C50 reinforced concrete structure, and the track is 45# standard steel rail, and the splice bar is the twisted steel.
Specifically, the method comprises the following steps: the outer contour of the prefabricated section is cuboid.
More specifically: the length multiplied by the width multiplied by the height of the prefabricated section is 1500mm multiplied by 300mm, the middle of the prefabricated section at the position 200mm away from the adjacent splicing end is provided with a connecting hole, and the central line direction of the connecting hole is parallel to the top surface of the prefabricated section.
The portal crane prefabricated foundation has the beneficial effects that: the gantry crane prefabricated foundation is suitable for foundations with good geological conditions, and the prefabricated section can be produced and maintained in advance, so that the construction period of field construction is shortened. The prefabricated section can be repeatedly used, and the engineering investment is saved. The both ends of prefabricated section set up dislocation prevention structure, can avoid appearing the dislocation after the serial-type concatenation of prefabricated section. The adjacent two sections of prefabricated sections are connected through the U-shaped screw rod, and the adjacent two sections of prefabricated sections are connected more stably. The track is connected with the connecting ribs in a welding mode, and operation is convenient; the connecting ribs are positioned on two sides of the track and are arranged in a crossed mode, so that the connecting ribs not only play a role in connection, but also have a role in limiting lateral movement of the track.
The invention also provides a method for installing the gantry crane prefabricated foundation, which solves the problems that the existing gantry crane cast-in-place foundation has long construction period, multiple working procedures and can not be reused. The technical scheme adopted by the invention is as follows: the method for installing the prefabricated foundation of the gantry crane comprises the following steps:
s1, prefabricating a prefabricating section of any gantry crane prefabricating foundation;
s2, after the prefabricated sections reach the design strength, splicing the prefabricated sections in series to form a prefabricated foundation, and then fixedly installing a track on the top of the prefabricated foundation;
and S3, forming the prefabricated foundation and the track into a whole for field installation.
The method for installing the prefabricated foundation of the gantry crane has the beneficial effects that: according to the method, the prefabricated section is produced in advance according to the bearing capacity condition of the site foundation and the maximum weight of the prefabricated beam, and the site pouring and maintenance period is saved; after the prefabricated foundation and the track form integral field installation, the gantry crane can be normally used. After the gantry crane is used, the prefabricated section and the track can be detached and transported back along with the components for next use.
The invention has the following beneficial effects: firstly, labor, materials and machinery are saved, and the finished product is prefabricated and installed, so that the factory can install and use the prefabricated steel pipe in a single line. Secondly, the construction period is saved, the time for waiting for the foundation strength in the cast-in-place process is reduced, and the cast-in-place construction method can be used after prefabrication and installation. And thirdly, the problem that the track is cracked due to the fact that cast-in-place concrete is constructed on the premise of insufficient strength is solved. Fourthly, the problem that the track foundation cannot be adjusted after installation deviation in the cast-in-place process in the construction process is avoided. Fifth, realized green construction, can recycle track and prefabricated basis, realized that easy operation is simple to handle, the device is practical, technical safety, economy on the whole.
The gantry crane track and foundation installation and recycling device is simple and easy to operate, can save more manpower and materials, can save the construction period to a certain extent, has low requirements on site space, is simple and easy to replace and disassemble damaged positions, is green and environment-friendly, and can well solve the problems of gantry crane track and foundation installation and recycling.
Drawings
FIG. 1 is a schematic diagram of a gantry crane prefabricated foundation according to the present invention.
Fig. 2 is a plan dimension view of the prefabricated section of fig. 1.
Reference numerals: the track comprises a track 1, a prefabricated section 2, a connecting rib 3, a connecting hole 4 and a U-shaped screw rod 5. The dimensions in fig. 2 are indicated in units of mm.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in figure 1, the gantry crane prefabricated foundation comprises a track 1 and a strip-shaped prefabricated foundation, wherein the prefabricated foundation is formed by splicing at least two prefabricated sections 2 in series, and the splicing in series refers to splicing the two ends of the prefabricated sections 2 end to end in series. Prefabricated section 2 is reinforced concrete structure, and the top of prefabricated section 2 is planar, buries splice bar 3 underground in prefabricated section 2, and splice bar 2 buries in prefabricated section 2's reinforced concrete, and splice bar 2 can link to each other or not connect with prefabricated section 2's structure, and the one end of splice bar 3 is worn out from prefabricated section 2's top surface. The connecting ribs 3 are plural and are preferably arranged at the middle position of the top surface of the prefabricated section 2. The track 1 is arranged on the top surface of the prefabricated foundation and is fixedly connected with the connecting ribs 3. The connecting ribs 3 play a role in stably connecting the track 2 with the prefabricated foundation, and the track 2 is prevented from moving laterally along the prefabricated section 2. Because the track 2 is longer, the track 2 can also play the effect of limiting dislocation along the splicing seam between the prefabricated sections 2.
In order to avoid the slippage between the two adjacent prefabricated sections 2 at the splicing position, the two ends of the prefabricated sections 2 are respectively provided with the dislocation preventing structures which are mutually matched. Dislocation prevention structure is mutual interlock between two sections prefabricated section 2, avoids the structure of dislocation after the concatenation, and dislocation prevention structure is for example: one end of the prefabricated section 2 is concave, the other end is convex, and the concave and the convex are matched with each other, as shown in fig. 1 and 2. In addition, the dislocation preventing structure can also be used for arranging a boss at one end of the prefabricated section 2, an sinking platform is arranged at the other end of the prefabricated section, and the boss and the sinking platform are mutually matched. The dislocation preventing structure also has the function of facilitating the positioning of the prefabricated sections 2 during splicing.
In order to enable the two spliced prefabricated sections 2 to slip at the splicing seam, connecting holes 4 are respectively formed in the positions, close to the splicing ends, of the prefabricated sections 2, U-shaped screw rods 5 are arranged between the connecting holes 4 of the two adjacent prefabricated sections 2, and adaptive screw caps are respectively arranged at two ends of each U-shaped screw rod 5. The adjacent two sections of prefabricated sections 2 are connected through the U-shaped screw rods 5, so that the structure is simple, the construction is convenient, and the effect of connecting and fixing the adjacent two sections of prefabricated sections 2 can be achieved.
The connecting rib 3 can be selected from steel bars, such as threaded steel bars, and the rail 1 and the connecting rib 3 can be welded and connected. Or the connecting ribs are bolts, fasteners are arranged on the outer sides of the bolts, and the rail feet on the two sides of the rail 1 are fixed on the top surface of the prefabricated foundation through the fasteners respectively. The connecting ribs 3 may be arranged in a straight line, i.e. along the middle line of the top surface of the precast segment, or the connecting ribs 3 may be located on both sides of the rail 1 and arranged crosswise.
The design of the prefabricated section 2 is determined according to the self weight and the maximum load condition of the gantry crane and geological conditions, concrete and corresponding types of reinforcing steel bars are selected for carrying out combined reinforcement checking calculation, for example, C50 concrete and phi 12 deformed steel bar are selected for facilitating the durability in use,
the outer contour of the prefabricated section 2 is approximately cuboid, the length multiplied by the width multiplied by the height is 1500mm multiplied by 300mm, the two ends of the prefabricated section 2 are respectively provided with a convex and a convex dislocation prevention structure, and the specific size is shown in fig. 2. The connecting rib 3 is a twisted steel. The track 1 is a 45# standard steel rail. And a connecting hole 4 is formed in the middle of the prefabricated section 2 at a position 200mm away from the adjacent splicing end, the connecting hole 4 is a hole with the diameter of 35mm, and the central line direction of the connecting hole 4 is parallel to the top surface of the prefabricated section 2. Two adjacent prefabricated sections 2 are connected through U-shaped screw rods 5, and the U-shaped screw rods 5 are M35 high-strength bolts.
The invention also provides a method for installing the prefabricated foundation of the gantry crane, which comprises the following steps:
s1, prefabricating a prefabricating section 2 of the gantry crane prefabricating foundation.
Before prefabricating the prefabricated section 2, concrete and corresponding types of reinforcing steel bars are selected according to the self weight and the maximum load condition of the gantry crane, and combined reinforcement checking calculation is carried out. And then, adopting a shaping steel mould, performing centralized prefabrication construction, and performing centralized maintenance after pouring concrete to enable the prefabricated section 2 to reach the design strength.
And S2, after the prefabricated sections 2 reach the design strength, splicing the prefabricated sections 2 in series to form a prefabricated foundation, fixedly mounting the track 1 on the top of the prefabricated foundation, and connecting the track 1 and the prefabricated foundation into a whole.
And S3, forming the prefabricated foundation and the track 1 into a whole for field installation.
After the original ground is rolled and compacted on site, the track 1 and the prefabricated foundation can be installed, leveling is carried out in the installation process, and after leveling, the two adjacent prefabricated sections 2 can be respectively connected by the U-shaped screw 5, so that the prefabricated sections 2 are connected into a whole.
After the construction task of the gantry crane is finished, after the upper structure of the gantry crane is disassembled, the foundation can be disassembled, and the disassembled track 1, the prefabricated section 2 and the U-shaped screw 5 can be used in the next field, so that the reutilization is realized.
Claims (9)
1. Prefabricated basis of portal crane, its characterized in that: including track (1) and being banding prefabricated foundation, prefabricated foundation is formed by two section at least prefabricated section (2) serial-type concatenations, and prefabricated section (2) are reinforced concrete structure, buries splice bar (3) underground in prefabricated section (2), and the top surface of prefabricated section (2) is worn out to the one end of splice bar (3), and track (1) set up in the top surface of prefabricated foundation and with splice bar (3) fixed connection.
2. The gantry crane prefabricated foundation of claim 1, wherein: the two ends of the prefabricated section (2) are respectively provided with mutually-matched dislocation preventing structures.
3. The gantry crane prefabricated foundation of claim 2, wherein: the dislocation prevention structure is as follows: one end of the prefabricated section (2) is concave, the other end is convex, and the concave and the convex are mutually matched.
4. The gantry crane prefabricated foundation of claim 1, wherein: the positions, close to the splicing ends, of the prefabricated sections (2) are respectively provided with a connecting hole (4), a U-shaped screw rod (5) is arranged between the connecting holes (4) of the two adjacent prefabricated sections (2), and two ends of the U-shaped screw rod (5) are respectively provided with a screw cap in an adaptive manner.
5. The gantry crane prefabricated foundation of any one of claims 1 to 4, wherein: the track (1) and the connecting ribs (3) are connected in a welding mode, and the connecting ribs (3) are located on two sides of the track (1) and are arranged in a crossed mode.
6. The gantry crane prefabricated foundation of claim 5, wherein: the prefabricated section (2) is of a C50 reinforced concrete structure, the track (1) is a No. 45 standard steel rail, and the connecting ribs (3) are threaded steel bars.
7. The gantry crane prefabricated foundation of any one of claims 1 to 4, wherein: the outer contour of the prefabricated section (2) is cuboid.
8. The gantry crane prefabrication foundation of claim 7, wherein: the length multiplied by the width multiplied by the height of the prefabricated section (2) is 1500mm multiplied by 300mm, the middle of the prefabricated section (2) at a position 200mm away from the adjacent splicing end is provided with a connecting hole (4), and the central line direction of the connecting hole (4) is parallel to the top surface of the prefabricated section (2).
9. The method for installing the prefabricated foundation of the gantry crane is characterized by comprising the following steps: the method comprises the following steps:
s1, prefabricating a prefabricating section (2) of a gantry crane prefabricating foundation according to any one of claims 1 to 8;
s2, after the prefabricated sections (2) reach the design strength, splicing the prefabricated sections (2) in series to form a prefabricated foundation, and then fixedly installing a track (1) on the top of the prefabricated foundation;
and S3, forming the prefabricated foundation and the track (1) into a whole for field installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011460278.9A CN112479027A (en) | 2020-12-11 | 2020-12-11 | Gantry crane prefabricated foundation and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011460278.9A CN112479027A (en) | 2020-12-11 | 2020-12-11 | Gantry crane prefabricated foundation and installation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112479027A true CN112479027A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011460278.9A Pending CN112479027A (en) | 2020-12-11 | 2020-12-11 | Gantry crane prefabricated foundation and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541467A (en) * | 2022-03-16 | 2022-05-27 | 中交一公局集团有限公司 | Gantry crane assembled prefabricated foundation |
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| CN203474271U (en) * | 2013-09-04 | 2014-03-12 | 中建交通建设集团有限公司 | Special assembly type rail base for portal crane |
| CN204097986U (en) * | 2014-09-10 | 2015-01-14 | 周山 | The reinforced concrete canal of more piece plug-in type |
| CN111997189A (en) * | 2020-09-16 | 2020-11-27 | 张延年 | Fabricated concrete slab structure and dry-type connecting method thereof |
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2020
- 2020-12-11 CN CN202011460278.9A patent/CN112479027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201933821U (en) * | 2010-12-07 | 2011-08-17 | 林刚 | Prefabricated reinforced concrete assembled and combined type water storage device |
| CN103195170A (en) * | 2013-04-03 | 2013-07-10 | 中铁建设集团有限公司 | Prefabricated reinforced concrete frame structure system |
| CN203295904U (en) * | 2013-06-08 | 2013-11-20 | 中铁第一勘察设计院集团有限公司 | Vibration reduction type ballastless track of heavy type mass spring |
| CN203474271U (en) * | 2013-09-04 | 2014-03-12 | 中建交通建设集团有限公司 | Special assembly type rail base for portal crane |
| CN204097986U (en) * | 2014-09-10 | 2015-01-14 | 周山 | The reinforced concrete canal of more piece plug-in type |
| CN111997189A (en) * | 2020-09-16 | 2020-11-27 | 张延年 | Fabricated concrete slab structure and dry-type connecting method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541467A (en) * | 2022-03-16 | 2022-05-27 | 中交一公局集团有限公司 | Gantry crane assembled prefabricated foundation |
| CN114541467B (en) * | 2022-03-16 | 2024-03-19 | 中交一公局集团有限公司 | Gantry crane assembled prefabricated foundation |
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Application publication date: 20210312 |