CN106930315A - A mobile tower crane foundation structure and construction method - Google Patents

Abstract

The invention relates to the technical field of engineering, and provides a movable tower crane foundation structure capable of being moved and repeatedly used, which comprises a base layer, wherein a leveling layer is paved on the base layer, a tower crane foundation is arranged on the leveling layer, the tower crane foundation comprises a bottom plate, a connecting piece, a connecting rod and an anchoring rod, the bottom plate is arranged on the upper surface of the leveling layer, a track is arranged on the bottom plate in parallel, a through hole is formed in the end part of the track, the connecting piece is arranged on the bottom plate, the upper end of the anchoring rod is connected with the connecting rod, the lower end of the anchoring rod is anchored into the ground, the connecting rod comprises a transverse connecting rod and a longitudinal connecting rod, the longitudinal connecting rod is fixedly arranged on the bottom plate through the connecting piece, the transverse connecting rod is connected with the track and is connected with the; the tower crane can move, the construction efficiency is improved, parts can be repeatedly used, and the cost is saved.

Description

A mobile tower crane foundation structure and construction method

technical field

The invention relates to the field of engineering technology, in particular to a mobile tower crane foundation structure and a construction method.

Background technique

The Algeria rental and sale affordable housing project undertaken by our company has more than 100 multi-storey buildings with less than 10 floors, one building with four households per elevator. It is a large-scale residential housing construction project. Buildings need to install tower cranes for construction. Now it is very common to pour concrete blocks as the foundation of the tower crane. However, when the current method is in construction, the volume of the poured concrete foundation is generally large, and it is necessary to bind steel bars and support during construction. Formwork, pre-embedded bolts, and pouring concrete, etc., the foundation of the tower crane cannot be moved. The foundation construction period of the tower crane made in this way is long. After the construction is completed, the foundation of the tower crane cannot be reused, and after the tower crane is dismantled, The concrete foundation needs to be demolished by blasting or mechanical crushing. Obviously, this method has low construction efficiency, serious environmental pollution, great waste of resources and increased engineering costs.

Contents of the invention

The technical problem to be solved by the invention is to provide a mobile tower crane foundation structure that can be moved and reused.

The technical solution adopted by the present invention to solve its technical problems is: comprising a base layer, on which a leveling layer is laid, and a tower crane foundation is arranged on the leveling layer, and the tower crane foundation includes a base plate, connectors, connecting rods, anchor rods, base plate It is arranged on the upper surface of the leveling layer, and the track is arranged in parallel on the bottom plate, and a through hole is opened at the end of the track. Rods and longitudinal connecting rods, the longitudinal connecting rods are fixedly arranged on the bottom plate through connecting pieces, the transverse connecting rods are connected with the track, and pass through the through holes to connect with the longitudinal connecting rods, a running device is arranged on the track, and the upper end of the running device is fixedly connected There is a base, and a tower is fixedly arranged on the upper surface of the base.

Further, the walking device includes a connecting plate, wheels, and high-strength bolts. Rubber pads are placed on the surface of the connecting plate. The connecting plate is connected to the base through high-strength bolts and rubber pads. A rail clamp is also arranged on the connecting plate. The lower end of the track is rollingly connected with the track, and a driving motor with a brake is provided at the position above the wheel to drive the wheel to travel.

Further, a connecting ear I is provided on the tower, a connecting ear II is provided on the bottom plate, and a support rod is also included, one end of the support rod is connected to the connecting ear I, and the other end is connected to the connecting ear II.

Further, both ends of the support rod are externally threaded rods, and the middle part is a steel pipe with internal threads.

Further, there are no less than two tower crane foundations.

Further, reinforcements are provided between the rails.

Further, a plurality of circular holes are arranged around the bottom plate.

Further, a rail splint is also provided at the end of the rail.

The present invention also provides a construction method for a mobile tower crane foundation structure, comprising the following steps:

Step 1: Use an excavator to level the foundation soil in the installation range of the tower crane, position the wires on the foundation, hammer the anchor rods with tapered ends into the foundation soil layer, and determine the anchorage according to the moving route of the tower crane and the soil quality of the foundation The number and arrangement of rods and the depth of embedding;

Step 2: Use a road roller to level and compact the foundation soil. The compaction range is 300mm wider than each side of the base layer. After compaction, spread a 100-200mm thick base layer on the foundation, and the paving width is wider than each side of the tower crane foundation. 300mm, compacted and leveled, and finally a leveling layer of 80mm to 100mm is laid on the surface, compacted and leveled, so that the strength and levelness of the mechanism surface meet the construction specification requirements;

Step 3: Install the bottom plate and track above the leveling layer with a hoisting machine. After installation, connect the upper end of the anchor rod to the connecting rod in turn, connect the connecting rod to the connecting piece and the through hole on the track, and connect the connecting rod to the anchor rod and the connecting rod The interconnection with connectors, connecting rods and rails forms the overall tower crane foundation;

Step 4: Install the running device at the reinforcement of the track. After installation, put down the rail clamp at the same time to clamp the track and fix it. Place a rubber pad on the connecting plate of the running device, install the base on the rubber pad, and connect the tower body with high-strength bolts The base, tighten the nuts, one end of the support rod is connected with the connecting ear Ⅰ on the tower, and the other end is connected with the connecting ear Ⅱ on the bottom plate, the tower is stabilized, and finally the upper components are installed upwards in turn to complete the installation.

Compared with prior art, the beneficial effect of the present invention is:

A mobile tower crane foundation structure. During the building construction process, when it is necessary to move, use a hoisting machine to alternately shift the two bottom plates to realize the movement of the tower crane on the track. The operation is simple and convenient, the structure is simple, and the construction efficiency is improved. After the construction is completed, the bottom plate, Both the base layer and the anchor rod can be reused, which is beneficial to cost saving.

A construction method for a mobile tower crane foundation structure without pouring concrete tower crane foundation blocks. During construction, steel pipes are first anchored into the ground, then the foundation soil and the base are compacted, a leveling layer is laid, and finally the bottom plate is laid, and the walking device and The construction method of the mobile tower crane foundation structure is simple, safe and efficient, reduces environmental pollution and resource waste caused by construction, meets the requirements of green construction, and saves construction costs.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 top view of the present invention;

Fig. 3 is a side view of the present invention;

The reference signs shown in Figure 1 to Figure 3 are respectively represented as: 1-base layer, 2-leveling layer, 3-bottom plate, 4-track, 5-through hole, 6-connector, 7-anchor rod, 8-transverse connection Rod, 9-longitudinal connecting rod, 10-base, 11-tower, 101-connecting plate, 102-wheel, 103-high-strength bolt, 104-rubber pad, 105-rail clamp, 107-drive motor, 12-connection Ear Ⅰ, 13-connecting ear Ⅱ, 14-support rod, 15-reinforcement, 16-round hole, 17-track splint.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, a mobile tower crane foundation structure includes a base layer 1, a leveling layer 2 is laid on the base layer 1, a tower crane foundation is arranged on the leveling layer 2, and the tower crane foundation includes a base plate 3, connectors 6. Connecting rods and anchoring rods 7, the bottom plate 3 is arranged on the upper surface of the leveling layer 2, a track 4 is arranged in parallel on the bottom plate 3, a through hole 5 is opened at the end of the track 4, and the connecting piece 6 is arranged on the bottom plate 3 Above, the upper end of the anchor rod 7 is connected with the connecting rod, and the lower end is anchored into the ground. The connecting rod includes a transverse connecting rod 8 and a longitudinal connecting rod 9. The longitudinal connecting rod 9 is fixedly arranged on the bottom plate 3 through the connecting piece 6. It is connected to the track 4 and connected to the longitudinal connecting rod 9 through the through hole 5. A running device is arranged on the track 4. The upper end of the running device is fixedly connected with a base 10, and the upper surface of the base 10 is fixedly provided with a tower 11; the present invention In the middle, the base layer adopts a 100-200mm thick cement stabilization layer. The cement stabilization layer uses graded crushed stone as aggregate, and uses cementitious materials and mortar to fill the gaps in the aggregate. The ground layer is laid on the foundation soil layer by vibratory compaction to ensure stability and stability, and to ensure the overall stability, a leveling layer 2 is laid on the base layer 1. The leveling layer 2 is made of compacted yellow sand, and its thickness is 80～100㎜. When laying the leveling layer 2, it is necessary to ensure that the strength and levelness of the civil structure surface of the base layer 1 meet the requirements of the construction specifications, which provides an important guarantee for the installation of the tower crane foundation. The tower crane foundation is set on the leveling layer 2, including setting in The bottom plate 3 on the upper surface of the leveling layer 2 is made of a steel plate with a thickness of 35m*5m*40mm, which has high strength, high toughness, good welding performance and cold forming performance, and good corrosion resistance, and can adapt to Various working environment conditions ensure the service life of the device and save costs to a certain extent. A track 4 is arranged on the bottom plate 3, and the track 4 is welded to the bottom plate 3. There are two tracks 4, so Said track 4 can adopt light rail or heavy rail, in order to make it bear greater power, adapt to the pressurization of various heavy objects, compared with light rail, heavy rail cross-section is big, can bear bigger force, preferably described The track 4 adopts a heavy rail, and a through hole 5 is provided at each end of the track 4. The through hole 5 is a plurality of bolt holes, located at both ends of the track, which facilitates the installation of the track splint 17 and the connecting rod. The connector 6 is fixedly arranged on the bottom plate 3, the upper end of the anchor rod 7 is connected with the connecting rod, and the lower end is anchored into the ground. In order to facilitate the anchor rod 7 to be anchored into the ground, the bottom end of the anchor rod 7 is set in a tapered shape, which reduces the size of the anchor rod. 7 into the ground, the anchor rod 7 can be more conveniently anchored into the ground to a greater depth, which is convenient and quick, and improves the overall stability. The connecting piece 6 is a steel plate fastener, which helps to install and fix the connecting rod. The connecting rods include a transverse connecting rod 8 and a longitudinal connecting rod 9, the longitudinal connecting rod 9 is fixedly arranged on the bottom plate 3 through the connector 6, the transverse connecting rod 8 is connected with the track 4, and passes through the through hole 5 to communicate with the longitudinal connecting rod 9 Connected, the longitudinal connecting rod is connected with 9 transverse connecting rods 8 to form a frame structure fixed on the bottom plate 3, connected with the anchor rod 7, The interconnection of rods and connectors 6, connecting rods and rails 4 forms the overall tower crane foundation, and the parts are connected to form a whole, which jointly undertakes the upper tower body, which greatly enhances the overall stability of the tower crane foundation and provides an important guarantee for its tower crane movement , while ensuring the stability when the tower crane is carrying out heavy lifting, a running device is arranged on the track 4, the upper end of the running device is fixedly connected with a base 10, and the upper surface of the base 10 is fixedly provided with a tower 11, and the running device drives the base 10 and the tower frame 11 realize the movement of the tower crane on the track 4, the operation is simple and convenient, the structure is simple, and the construction efficiency is improved. After the construction is completed, each part is detachable and can be reused, which is conducive to cost saving.

In order to facilitate the installation of the running gear and the movement of the tower crane, in the present invention, the running gear includes a connecting plate 101, wheels 102, and high-strength bolts 103, and a rubber pad 104 is placed on the upper surface of the connecting plate, and the connecting plate 101 is bolted by high-strength bolts 103 and The rubber pad 104 is connected with the base 10, and a rail clamp 105 is also arranged on the connecting plate 101. The wheels 102 are arranged at the lower end of the connecting plate 101 and are rollingly connected with the track 4. A position above the wheels 102 is provided with The drive motor 107 with the brake that drives the wheel to walk; the connecting plate 101 is connected to the base 1 through the high-strength bolt 103 and the rubber pad 104, and the high-strength bolt 103 makes its connection and fixing firm, and the rubber pad 104 acts to prevent the connecting plate 103 from The connection of the base 1 is loosened, which ensures the stability of the structure. The lower part of the connecting plate 103 is provided with wheels 106. There are eight wheels in total, four on each side, four driving wheels, and four fixed wheels for the tower crane. To move, a drive motor 107 with a brake for driving the wheel is set at the position above the wheel 102. The drive motor 107 drives the wheel 102 to drive the tower crane to walk on the track 4. The drive motor 107 has a brake 108. When the tower crane arrives At the predetermined position, the braking effect of the brake 108 is used to ensure that the wheels 102 are no longer walking. A rail clamp 105 is provided on the connecting plate 101. When the tower crane is in place, the rail clamp 105 is put down to tighten the track 4 and the tower crane is fixed. The operation is simple. Safe and reliable.

Because the tower crane itself is relatively high, the stability of the upper tower 11 is relatively poor. In order to stabilize the foundation of the tower crane, in the present invention, the tower 11 is provided with a connection ear I12, and the bottom plate 3 is provided with a connection ear II13. Including the support rod 14, one end of the support rod 14 is connected with the connecting ear I12, and the other end is connected with the connecting ear II13; through the connecting ear I12 and the connecting ear II13, the supporting rod 14 makes the tower 11 and the tower crane foundation connected to form a whole, and jointly bear the force , the stability of the tower crane foundation is enhanced, the upper tower frame 11 is effectively supported, and a guarantee is provided for the tower crane to lift heavy objects.

In order to facilitate the connection with the connecting lugs at different heights and improve the supporting effect on the tower, in the present invention, the two ends of the support rod 14 are externally threaded rods, and the middle part is a steel pipe with internal threads; The steel pipe adjusts the support rod 14 to make it suitable for the connecting ears at different height positions, the structure is simple, and the operation is convenient.

When there is a larger construction scope, if there is only one tower crane foundation, it cannot satisfy the larger displacement of the tower crane on the track 4. In the present invention, the tower crane foundations are not less than two; When using a hoisting machine, the two base plates 3 are alternately displaced to realize the movement of the tower crane on the track 4, which is simple in construction, convenient in operation, safe and reliable.

When the tower crane is hoisted, the tower crane is located in the middle of the tower crane foundation. In order to improve the overall stability of the tower crane during hoisting, in the present invention, reinforcements 15 are arranged between the rails 4; Part 15 is made of steel rails, and is welded with base plate 3 and two rails 4. When the tower crane is hoisting, the tower body is arranged at the reinforcing part 15, which effectively improves the stability of the tower crane.

In order to anchor the anchor rod 7 into the ground, in the present invention, the bottom end of the anchor rod 7 is set to be tapered; Rod 7 is anchored into underground greater depth, convenient and quick.

Because the lifting weight of the tower crane is different from the bearing capacity of the foundation, it affects the stability of the tower crane when it moves and hoists. In the present invention, a plurality of round holes 16 are arranged around the base plate 3; the round holes 16 are used for anchor rods 7 Pass through, according to the difference of hoisting weight and foundation bearing capacity, increase the quantity of circular hole 16, the lower end of anchor rod 7 passes circular hole 16 and anchors into the ground, prevents inclination phenomenon from occurring in the lifting process, improves overall stability.

When the tower crane needs to be shifted, use the hoisting machine to alternately shift the two bottom plates 3 to realize the movement of the tower crane on the track 4. The two bottom plates 3 are butted and assembled. , in the present invention, the end portion of track 4 is also provided with track splint 17, and track splint 17 cooperates on the connection track 4 by splint bolt and through hole, and the track 4 on two adjacent bottom plates 3 is connected, makes adjacent bottom plate The track 4 on the 3 is located on the same straight line for the tower crane to move on the track 4.

In the present invention, when the tower crane and the base structure of the tower crane are shifted, after the construction of a building is completed, if the distance between the two buildings is relatively close, the base layer 1 and the leveling layer 2 in the moving direction are first laid firmly, and the bottom plate is laid 3. Butt and assemble two adjacent base plates 3 so that the rails 4 on the adjacent two base plates 3 are on the same straight line, install track splints 17 at both ends of the track 4 to complete the basic connection, and then connect the joints on the base plate 3 Part 6, connecting rod, anchor rod 7 and track 4 are connected to each other to form a whole. When moving, remove the connection between the support rod 14 on the tower 11 and the connecting ear I12, loosen the rail clamp 105, and start the drive motor 107 to drive The tower crane walks on the track 4, and moves from the reinforcement 15 of one base plate 3 to the reinforcement 15 of the other base plate. After it is in place, the tower crane is stopped and the rail clamp 4 is put down at the same time to tighten the rail 4 to fix the tower body. Connect the connecting ear I12 to the connecting ear II13 to stabilize the tower frame 11; if the distance between the two buildings is long, the tower crane can be dismantled, and the tower crane, walking device, and tower crane foundation can be transported to the corresponding position of the new building by car, and then each Partial bedding and installation.

The above is a specific embodiment of a mobile tower crane foundation structure of the present invention. It can be seen from the implementation process that a mobile tower crane foundation structure of the present invention, in the building construction process, two base plates are alternately moved by a hoisting machine when it needs to be moved. The tower crane can be moved on the track at the same position, the operation is simple and convenient, the structure is simple, and the construction efficiency is improved. After the construction is completed, the bottom plate, the base layer and the anchor rod can be reused, which is conducive to saving costs.

The present invention also provides a construction method for a mobile tower crane foundation structure, comprising the following steps:

Step 1: Use an excavator to level the foundation soil in the installation range of the tower crane to prevent inclination and safety accidents during the installation of the tower crane and the foundation of the tower crane in the later stage. 7. Hammer into the foundation soil layer respectively to provide basic guarantee for tower crane and tower crane foundation installation, and determine the quantity, layout and embedding depth of anchor rods 7 according to the moving route of the tower crane and the soil quality of the foundation;

Step 2: Use a road roller to level and compact the foundation soil. The compaction range is 300mm wider than each side of the base layer 1. After compaction, spread a 100-200mm thick base layer 1 on the foundation. The width of the paving is wider than that of the tower crane foundation. The side width is 300㎜, compacted and leveled, and finally a leveling layer 2 of 80㎜～100㎜ is laid on the surface, compacted and leveled, so that the strength and levelness of the mechanism surface meet the requirements of the construction specifications, and provide the overall installation of tower crane facilities. Important Guarantee;

Step 3: Use a hoisting machine to install the bottom plate and track above the leveling layer 2. After installation, connect the upper end of the anchor rod 7 to the connecting rod in turn, connect the connecting rod to the connecting piece and the through hole 5 on the track 4, and connect the connecting rod to the anchor The interconnection of rod 7, connecting rod and connecting piece 6, connecting rod and rail 4 forms the foundation of the tower crane as a whole, and each part is connected to form a whole, which jointly bears the upper tower body, which greatly strengthens the overall stability of the tower crane foundation and facilitates the movement of the tower crane. Provides an important guarantee, and at the same time ensures the stability when the tower crane is lifting heavy objects;

Step 4: Install the running device at the reinforcing part 15 of the track. After installation, put down the rail clamp 105 at the same time to clamp the track 4 and fix it. Place the rubber pad 104 on the connecting plate 101 of the running device, and install the base 10 on the rubber pad 104 , and connected to the base of the tower body through high-strength bolts 103, tighten the nuts, one end of the support rod 14 is connected to the connecting ear I12 on the tower, and the other end is connected to the connecting ear II13 on the bottom plate 3, the tower is stabilized, and finally upwards in turn Install the upper components to complete the installation.

The above is a specific embodiment of the construction method of a mobile tower crane foundation structure of the present invention. It can be seen from the implementation process that the construction method of a mobile tower crane foundation structure provided by the present invention does not need to pour concrete tower crane foundation blocks. Anchor the steel pipes into the ground, then compact the foundation soil and the base, lay the leveling layer, and finally lay the bottom plate, install the walking device and the tower body. The construction method of the mobile tower crane foundation structure is simple, safe and efficient, and reduces the construction costs. environmental pollution and waste of resources, meet the requirements of green construction, and save construction costs.

Claims (9)

1. a kind of moving tower crane foundation structure, it is characterised in that including basic unit (1), screed-coat is equipped with the basic unit (1) (2), be provided with tower crane on the screed-coat (2), the tower crane include base plate (3), connector (6), connecting rod, Anchor rod (7), the base plate (3) is arranged on the upper surface of screed-coat (2), and track is arranged with parallel on the base plate (3) (4) through hole (5), is offered in the track (4) end, the connector (6) is arranged on base plate (3), the anchor rod (7) Upper end is connected with connecting rod, and lower end anchors into underground, and the connecting rod includes transverse connecting rod (8) and longitudinally connected bar (9), described Longitudinally connected bar (9) is fixedly installed on base plate (3) by connector (6), and the transverse connecting rod (8) is connected with track (4), And connect with longitudinally connected bar (9) through through hole (5), running gear is provided with the track (4), on the running gear End is fixedly connected with base (10), and base (10) upper surface is fixedly installed pylon (11).

2. a kind of moving tower crane foundation structure according to claim 1, it is characterised in that the running gear includes connection Lay rubber blanket (104), the company in plate (101), wheel (102), high-strength bolt (103), connecting plate (101) upper surface Fishplate bar (101) is connected by high-strength spiral shell (103) bolt and rubber blanket (104) with base (10), is also set on the connecting plate (101) Rail clamping device (105) is equipped with, the wheel (102) is arranged at the lower end of connecting plate (101), and is connected with track (4) rolling, in institute State the motor (107) with brake that driving moment (102) walking is provided with wheel (102) top position.

3. a kind of moving tower crane foundation structure according to claim 2, it is characterised in that also including support bar (14), Engaging lug I (12) is provided with the pylon (11), engaging lug II (13), the support bar are provided with the base plate (3) (14) one end is connected with engaging lug I (12), and the other end is connected with engaging lug II (13).

4. a kind of moving tower crane foundation structure according to claim 3, it is characterised in that the two ends of the support bar (14) It is external thread rod, middle part is tapped steel pipe.

5. a kind of moving tower crane foundation structure according to claim 1, it is characterised in that the tower crane is no less than two It is individual.

6. a kind of moving tower crane foundation structure according to any one claim in Claims 1-4, its feature exists In welding is provided with reinforcer (15) between the track (4).

7. a kind of moving tower crane foundation structure according to any one claim in Claims 1-4, its feature exists In in the base plate (3), surrounding is provided with multiple circular holes (16).

8. a kind of moving tower crane foundation structure according to any one claim in Claims 1-4, its feature exists In being additionally provided with rail clamp (17) in the track (4) end.

9. a kind of construction method of moving tower crane foundation structure, it is characterised in that comprise the following steps：

Step 1：The foundation soil of tower crane fitting limit is carried out into leveling treatment with excavator, unwrapping wire positioning, will carry on ground The anchor rod (7) of tapering point hammers foundation soil respectively, moves route according to tower crane and ground soil property situation determines anchor rod (7) Quantity and arrangement form and buried depth；

Step 2：Smooth compacting is carried out to foundation soil with road roller, compacting scope goes out 300 ㎜ than basic unit (1) per hem width, after compacting Pave 100~200 ㎜ thick basic unit (1) on ground, and paving width goes out 300 ㎜ per hem width than tower crane, and compacting is levelling, most The screed-coat (2) of 80 ㎜~100 ㎜ is equipped with its face afterwards, is compacted and levelling so that mechanism's surface intensity and levelness meet Job specfication requirement；

Step 3：With lifting machine in screed-coat (2) top mounting base (3) and track (4), successively by anchor rod after installing (7) upper end is connected with connecting rod, and connecting rod is connected with the through hole (5) on connector (6) and track (4) respectively, by connecting rod Overall tower crane is interconnected to form with anchor rod (7), connecting rod and connector (6), connecting rod and track (4)；

Step 4：Running gear is installed at reinforcer (15) place of track, by rail clamping device (105) while putting down clamping after installing Track (4) is fixed, and (101) lay rubber blanket (104), mounting seat on rubber blanket (104) on the connecting plate of running gear (10), and (103) are connected by high-strength bolt and meets tower body base, clamp nut, the company on support bar (14) one end and pylon (11) Lug I (12) is connected, and the other end is connected with the engaging lug II (13) on base plate (3), consolidates good pylon, is finally installed upwards successively Each component in top, completes to install.