CN210370638U

CN210370638U - Slideway system for jacking frame

Info

Publication number: CN210370638U
Application number: CN201921260628.XU
Authority: CN
Inventors: 马丽丽; 孙若辉; 崔天宇; 刘越; 杨勇; 李泽华; 孙宇; 孙谈
Original assignee: China Construction First Group Construction and Development Co Ltd
Current assignee: China Construction First Group Construction and Development Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-04-21
Anticipated expiration: 2029-08-06

Abstract

The utility model provides a slide system for frame top advances, including slide and prefabricated frame, open the upside of slide has the spout, the upside surface of slide has spread lubricated isolation layer, the downside surface of prefabricated frame is connected with the draw runner, the downside surface of prefabricated frame drops on the upside of lubricated isolation layer, the draw runner gets into in the spout, the lower surface of draw runner and the tank bottom contact of spout, the rear side of prefabricated frame is connected with the top iron, the draw runner of prefabricated frame moves along the top direction in the spout through the effort of top iron and drives the prefabricated frame and slide simultaneously. The utility model discloses an along the direction of advancing in the top rectangular shape block of frame bottom construction and the spout that construction and block suited on the spout, realize the initiative mode of a control frame direction of advancing in the top. The mutual combination of the sliding strip, the sliding groove and the jacking iron can effectively control the frame jacking mode, reduce the construction steps of monitoring and deviation correction, and in addition, the structure and the operation are simple and easy, and a large amount of labor, materials, time and other costs can be saved.

Description

Slideway system for jacking frame

Technical Field

The utility model belongs to prefabricated frame construction field, especially a slide system for prefabricated frame pushes up into.

Background

With the rapid development of social economy, the urban railway networks and urban roads are continuously expanded, so that the crossing condition of the roads and the railways is more frequent. For the crossing working condition, an interchange mode of jacking the prefabricated frame by a railway passing under the road is often adopted, and the control of the jacking direction of the frame is particularly important in the construction process.

For controlling the frame jacking direction, a passive mode combining monitoring and deviation rectification is usually adopted, for example, direction piers are arranged on two sides of a sliding plate and an outer wall of the frame along the jacking direction to control the deviation of the jacking direction; an observation station is arranged on the back wall, and the jacking elevation and the jacking direction are monitored by adopting a theodolite, a leveling instrument and the like; strictly controlling the frame jacking step length; and monitoring the oil meter reading of the oil pump, the number of the starting jacks, the jacking force, the jacking time, the jacking distance and the like in real time when each jacking is completed. If the monitoring data show that jacking deviation occurs, the back top iron can be used for adjustment, when the back top iron is replaced, the top iron on one side can be wedged tightly, the top iron on the other side can be wedged loosely, after the pickaxe is opened, the wedged tight side moves firstly, and the wedged loose side does not move.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a slide system for frame top advances, there is the control method complicacy to frame top direction control to solve the passive mode that adopts the monitoring to combine together with rectifying, and the workman is difficult for mastering, the technical problem that construction quality can't guarantee.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a slideway system for pushing a frame comprises a sliding plate at the lower part and a prefabricated frame arranged at the upper side of the sliding plate,

the sliding plate is made of reinforced concrete, the width of the sliding plate is not less than the width of the bottom of the prefabricated frame, a group of sliding chutes which are through long along the jacking direction and are arranged in parallel at intervals are arranged on the upper side of the sliding plate, the intervals between the sliding chutes are the same, a layer of lubricating isolation layer is continuously paved on the upper side surface of the sliding plate and in the sliding chutes,

the lower side surface of the prefabricated frame is connected with a slide bar, the slide bar is arranged at the position corresponding to the slide groove and has the same number with the slide groove, the slide bar is downwards protruded relative to the lower side surface of the prefabricated frame and is arranged along the jacking direction, the outer contour dimension of the slide bar is smaller than the groove body dimension of the slide groove,

the lower surface of the prefabricated frame is arranged on the upper side of the lubricating isolation layer, the slide bar enters the sliding groove, the lower surface of the slide bar is in contact with the groove bottom of the sliding groove,

the rear side of the prefabricated frame and the rear end of the sliding strip are connected with ejector irons, jacks are connected to the ejector irons, and the sliding strip of the prefabricated frame moves in the sliding groove along the jacking direction through the acting force of the ejector irons and simultaneously drives the prefabricated frame to slide.

The top iron is placed in the spout, the outer contour dimension of top iron is less than the cell body size of spout, and the top iron is the steel pipe concrete cylinder, the top iron includes the combination of lengthening of one top iron unit or two above top iron units, the length of top iron unit is 5m, 3m, 2m or 1 m.

The cross section of the sliding groove is in a curved surface arc shape or a rectangular shape.

The slide bar is a reinforced concrete bar integrally cast with the prefabricated frame, or a steel bar pre-embedded at the bottom of the slide bar before the prefabricated frame is cast with concrete.

The cross section of the slide bar is in a curved surface arc shape or a rectangular shape.

The lubricating isolation layer sequentially comprises paraffin, talcum powder and a plastic film from bottom to top.

The top of the top iron on the slide all corresponds and is provided with U type fastener, and U type fastener is 2m along setting up the interval of top direction, two feet of U type fastener are respectively through the slide fixed connection of connecting piece and spout both sides, U type fastener is steel.

Compared with the prior art the utility model has the following characteristics and beneficial effect:

the utility model relates to a spout system for frame top advances through the spout that follows the top direction and construct rectangular shape block and be under construction and block phase adaptation in the frame bottom, realizes a control frame top direction's initiative mode. The sliding groove is used as a track for jacking the frame, so that the jacking direction of the frame can be effectively controlled; in the frame jacking process, the sliding groove can be used for placing jacking iron with the size suitable for the sliding groove to serve as a track of the jacking iron in the jacking process, so that the risk of jacking the jacking iron in the jacking process is reduced, and certain construction danger is prevented due to the fact that the jacking iron bulges due to uneven stress in the frame jacking process; a U-shaped buckle is arranged above the sliding chute, so that the danger of bulging of the top iron is reduced; in order to avoid the adhesion of the sliding plate and the frame in the jacking process and reduce the jacking frictional resistance, a lubricating isolation layer is laid on the upper side surface of the sliding plate; finally, the mutual combination of the sliding strip, the sliding groove and the jacking iron can effectively control the frame jacking mode, reduce the construction steps of monitoring and deviation correction, and save a large amount of labor, materials, time and other costs due to the simple structure and operation.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a frame in the slide system of the present invention.

Fig. 2 is a perspective view of a slide plate in the slide system of the present invention.

Figure 3 is a front view of the slide system of the present invention.

Fig. 4 is a schematic structural view of the section a-a in fig. 3.

Fig. 5 is a schematic structural view of a section B-B in fig. 3.

Fig. 6 is a schematic diagram of the frame jacking.

Fig. 7 is a schematic structural view of section C-C in fig. 6.

Reference numerals: 1-prefabricated frame, 2-slide bar, 3-slide plate, 4-sliding groove, 5-top iron, 6-U-shaped fastener, 7-connecting piece and 8-lubricating isolation layer.

Detailed Description

Examples referring to fig. 1-7, a ramp system for frame jacking includes a lower skid plate 3 and a prefabricated frame 1 resting on the upper side of the skid plate 3.

Slide 3 is reinforced concrete board, slide 3's width is not less than prefabricated frame 1's bottom width, and slide 3's upside is opened has a set of spout 4 that leads to length and interval parallel arrangement along the direction of advancing, and the interval between the spout 4 is the same, one deck lubrication isolation layer 8 has been laid in succession in slide 3's the upside surface and the spout.

Prefabricated frame 1's downside surface is connected with draw runner 2, draw runner 2 corresponds the position setting of spout 4 and is the same with spout 4 quantity, draw runner 2 is protruding downwards, is advanced the direction to lead to long the setting along the top relative prefabricated frame 1's downside surface, the outline size of draw runner 2 is less than the cell body size of spout 4.

The lower side surface of the prefabricated frame 1 is placed on the upper side of the lubricating isolation layer, the slide bar 2 enters the sliding groove 4, and the lower surface of the slide bar 2 is in contact with the groove bottom of the sliding groove 4.

The rear side of the prefabricated frame 1 and the rear end of the sliding strip are connected with ejector irons 5, jacks are connected to the ejector irons, and the sliding strip 2 of the prefabricated frame 1 moves in the sliding groove 4 along the jacking direction through the acting force of the ejector irons and drives the prefabricated frame 1 to slide.

The top iron is placed in the sliding groove 4, the outer contour dimension of the top iron 5 is smaller than the groove body dimension of the sliding groove 4, the top iron is a steel pipe concrete cylinder, the top iron comprises a top iron unit or a lengthening combination of more than two top iron units, and the length of the top iron unit is 5m, 3m, 2m or 1 m.

The cross section of the sliding groove 4 is in a curved surface arc shape or a rectangular shape.

The sliding strip 2 is a reinforced concrete strip integrally cast with the prefabricated frame 1, or a steel strip pre-embedded at the bottom of the prefabricated frame 1 before concrete is cast in the prefabricated frame.

The cross section of the slide bar 2 is in a curved surface arc shape or a rectangular shape.

The lubricating isolation layer 8 sequentially comprises paraffin, talcum powder and a plastic film from bottom to top.

The top of the upper and lower iron 5 of slide 3 all corresponds and is provided with U type fastener 6, and U type fastener 6 is 2m along setting up the interval of advancing the direction in the top, two feet of U type fastener 6 are respectively through the slide fixed connection of connecting piece 7 with 4 both sides of spout, U type fastener is steel. In this embodiment, the connecting member is an expansion bolt.

The construction method of the slideway system for jacking the frame comprises the following construction steps:

step one, determining parameters of a prefabricated frame: the jacking force required by jacking the prefabricated frame 1 is determined by the gravity of the prefabricated frame and the friction force between the prefabricated frame and the sliding plate according to the specifications, and the type and the number of the required jacks and the section shape, the size, the number, the position and the like of the sliding strips are designed according to the jacking force.

Step two, determining the parameters of the sliding plate: the thickness and the reinforcing bars of the sliding chutes are determined according to the gravity and the external load of the prefabricated frame, and the size and the number of the corresponding sliding chutes are determined according to the size of the prefabricated frame and the parameters of the sliding strips. The chute is used as a track for jacking the frame and placing the jacking iron in the jacking process, so that the quality requirement of the chute is high, and a high-quality template is used in the construction process.

In this example, the prefabricated frame has a length of 12m, a height of 10m and a wall thickness of 1 m. The cross section of the slide bar is a semicircular curved surface, and the radius is 20 cm. The thickness of the sliding plate is 30cm, the cross section of the sliding groove is rectangular, the groove depth is 20cm, and the groove width is 25 cm.

And step three, constructing the sliding plate on a construction site, and constructing a lubricating isolation layer on the sliding plate.

The construction process of the lubricating isolation layer is as follows:

step a, after the sliding plate is poured, pouring a layer of paraffin oil with the thickness of about 3mm on the top of the sliding plate, wherein the paraffin oil is doped with 25% of engine oil by mass ratio.

And b, after the paraffin oil is solidified, scattering a layer of talcum powder with the thickness of 1mm on the surface of the paraffin oil.

And c, laying a layer of plastic film on the talcum powder, pressing stubbles at the joint of the film for 20cm, and enabling the stubbles to face to the two sides of the sliding plate.

Step four, constructing a prefabricated frame and a slide bar:

when the prefabricated frame and the slide bars are prefabricated for a factory:

the prefabricated frame prefabricated in engineering is hoisted and placed on the sliding plate 3, the lower side of the prefabricated frame 1 is in contact with the lubricating isolation layer, and the sliding strip 2 is aligned with the sliding groove 4.

When the prefabricated frame and the slide bar are constructed on site:

and directly pouring the prefabricated frame 1 and the sliding strip on the sliding plate for molding.

Step five, preparing a proper jack and a proper top iron according to the design requirement and the magnitude of the jacking force; the top iron is placed in the sliding groove 4, so that the top iron can be prevented from deviating from a jacking axis, and the jacking deviation of the frame is reduced. The front end of the ejector iron is contacted with the rear end surface of the slide bar, the U-shaped fastener limiting ejector iron is constructed on the upper portion of the sliding groove, the oil pump is started to eject the prefabricated frame, after the jack finishes one stroke, the oil pump returns to the pickaxe, the ejector irons with the corresponding specifications are increased and decreased in the sliding groove, the oil pump is started again to eject the prefabricated frame, and the prefabricated frame is ejected in place repeatedly.

And step six, after the prefabricated frame is jacked in place, sequentially removing the jacking iron and the jack, and finally breaking the sliding plate. Because the slide bars are concrete blocks or embedded steel pieces integrated with the prefabricated frame, the prefabricated frame does not need to be subjected to additional construction treatment after being jacked in place.

Claims

1. A slide system for frame jacking characterized in that: comprises a sliding plate (3) at the lower part and a prefabricated frame (1) which is arranged at the upper side of the sliding plate (3),

the sliding plate (3) is a reinforced concrete plate, the width of the sliding plate (3) is not less than the width of the bottom of the prefabricated frame (1), a group of sliding grooves (4) which are through long along the jacking direction and are arranged in parallel at intervals are formed in the upper side of the sliding plate (3), the intervals between the sliding grooves (4) are the same, a layer of lubricating isolation layer (8) is continuously paved on the upper side surface of the sliding plate (3) and in the sliding grooves,

the lower side surface of the prefabricated frame (1) is connected with a sliding strip (2), the sliding strip (2) is arranged at a position corresponding to the sliding groove (4) and is the same as the sliding groove (4) in quantity, the sliding strip (2) is downwards protruded relative to the lower side surface of the prefabricated frame (1) and is arranged in a full-length mode along the jacking direction, the size of the outer contour of the sliding strip (2) is smaller than that of the groove body of the sliding groove (4),

the lower side surface of the prefabricated frame (1) is arranged on the upper side of the lubricating isolation layer, the slide bar (2) enters the sliding groove (4), the lower surface of the slide bar (2) is in contact with the groove bottom of the sliding groove (4),

the rear side of the prefabricated frame (1) and the rear end of the sliding strip are connected with a jacking iron (5), the jacking iron is connected with a jack, and the sliding strip (2) of the prefabricated frame (1) moves in the sliding groove (4) along the jacking direction through the action force of the jacking iron and drives the prefabricated frame (1) to slide.

2. The runner system for frame jacking of claim 1, wherein: the top iron is placed in the spout (4), the outer contour dimension of top iron (5) is less than the cell body size of spout (4), and the top iron is the steel pipe concrete cylinder, the top iron includes the extension combination of a top iron unit or two above top iron units, the length of top iron unit is 5m, 3m, 2m or 1 m.

3. The runner system for frame jacking of claim 2, wherein: the cross section of the sliding groove (4) is in a curved surface arc shape or a rectangular shape.

4. The runner system for frame jacking of claim 2, wherein: the sliding strips (2) are reinforced concrete strips integrally cast with the prefabricated frame (1), or steel strips pre-embedded at the bottom of the prefabricated frame (1) before concrete is poured in the prefabricated frame (1).

5. A ride system for frame jacking according to claim 2 or 4, wherein: the cross section of the slide bar (2) is in a curved surface arc shape or a rectangular shape.

6. The runner system for frame jacking of claim 2, wherein: the lubricating isolation layer (8) sequentially comprises paraffin, talcum powder and a plastic film from bottom to top.

7. The runner system for frame jacking of claim 2, wherein: the top of the upper and lower iron (5) of slide (3) is provided with U type fastener (6) in a corresponding manner, the distance between the U type fastener (6) and the top is 2m, two feet of the U type fastener (6) are respectively connected with the slide on two sides of the sliding groove (4) through connecting pieces (7), and the U type fastener is made of steel.