CN107254890B - A limiting device for truncation and rectification of prefabricated square piles - Google Patents

Abstract

The present invention relates to rectifying of leaned building technical fields.A kind of limiting device for precast square pile truncation rectification, it is characterized in that, including the support base for being fixed on the lower section after square pile is truncated and the four prism type limit sleeve for being set on the upper section after square pile is truncated being connected on support base, the four prism type limit sleeve includes horizontal connecting plate of the angle steel together with by the Bolted angle connection on four four angles for being located at four prism type limit sleeve.The limiting device for precast square pile truncation rectification of horizontal displacement is generated when the present invention provides a kind of for preventing building jacking, to solve the problems, such as that building jacking process is easy to happen deflection.

Description

A limiting device for truncation and rectification of prefabricated square piles

technical field

The invention relates to the technical field of rectification of buildings, in particular to a limit device for truncation and rectification of prefabricated square piles.

Background technique

Due to the insufficient bearing capacity of the engineering piles and the difference in the distribution of bearing capacity among the engineering piles, the uneven settlement will lead to the inclination of the superstructure. In order to restore the use function of the building, the pile body can be cut off for jacking or forced landing to rectify the deviation.

On the one hand, due to different geological and hydrological conditions, the surface layer of some sites (part of the pile head area) is often a soft soil layer such as silt. After the pile top is cut off, the pile head is in a free state, and the jacking process is prone to deflection; On the one hand, due to the vertical error of the jack installation and the influence of other unfavorable factors (such as strong wind and vibration) during the jacking process, there may be slight horizontal displacement during the jacking process. In order to avoid such a situation, a plane limit device needs to be set.

SUMMARY OF THE INVENTION

The invention provides a limiting device for truncation and rectification of prefabricated square piles for preventing horizontal displacement when a building is lifted, so as to solve the problem that the building is prone to deflection during the lifting process.

The above technical problems are solved by the following technical solutions: a limiting device for truncation and rectification of prefabricated square piles, which is characterized in that it comprises a support seat for fixing on the lower section of the square pile after being cut off and a support seat connected to the support The quadrangular prism-shaped limit sleeve on the seat is used to be sleeved on the upper section of the truncated square pile, the quadrangular prism-shaped limit sleeve includes four angle steels and Horizontal connecting plates that connect the angles together. When in use, first install the support seat at the appropriate position of the square pile, then cut off the square pile in such a way that the support seat is connected to the lower section of the square pile after being cut off, and then build a sleeve on the support seat where the square pile is cut off. The quadrangular prism-shaped limit sleeve on the upper part of the rear is built, and the lower part of the rear quadrangular prism-shaped limit sleeve is fixed together with the support seat (for example, by welding or bolts with nuts), and finally put it on the jack. Just lift it up on the support base.

Preferably, the horizontal connecting plate is connected to the external angle surface of the angle steel. It can make the four corners of the truncated upper section of the square column fit together with the angle iron, so as to avoid damage to the upper section edge and corner during the lifting process (it is more difficult to repair the damaged edge than the flat part).

Preferably, the present invention also includes a plurality of vertical tie rods located on the periphery of the quadrangular prism-shaped limit sleeve, the lower ends of the vertical tie rods are connected with the limit nut after passing through the support seat, and the upper ends are connected with the truncated side. The cap beams on the upper section of the pile are connected together. The translation can be avoided in the time period when it is installed to the quadrangular prism-shaped limiting sleeve after being truncated.

As another preference, the present invention also includes a limit sleeve connection structure for connecting the quadrangular prism limit sleeve with the support base, and the limit sleeve connection structure includes a circular lower rail, which is rotatably connected to the circular lower rail. The circular lower chute on the upper end, the vertical connecting rod whose lower end is connected with the circular lower chute, the circular upper chute connected to the upper end of the vertical connecting rod, and the circular upper sliding rail rotatably connected to the circular upper chute and a horizontal connecting rod whose one end is connected to the circular upper slide rail, the circular lower rail is fixedly connected with the support seat, and the other end of the horizontal connecting rod is fixedly connected with the quadrangular prism limiting sleeve Together, the limiting sleeve connecting structure is connected with a cutting machine for cutting off the opposite pile. In the technical solution, the square-shaped limiting sleeves limit the square piles in the whole process of separating the square piles and jacking up the square piles, thereby effectively preventing the offset during the whole process of sawing and jacking.

Preferably, the cutting machine includes a horizontally arranged saw blade, a motor for driving the saw blade to rotate, and a motor connection seat connected with the motor, and the motor connection seat is hinged to the circular upper chute through a vertical hinge shaft. At the same time, the vertical hinge shaft is eccentrically arranged with the saw blade. Convenience during work can be improved.

Preferably, the limiting sleeve connecting structure is enclosed by two halves distributed along the horizontal direction which are detachably connected together. It is convenient for the limit sleeve connection structure to be reused. The quadrangular prism limiter is usually built every time.

Preferably, the horizontal connecting rod includes a fixed section connected with the circular upper slide rail and a moving section with one end telescopically inserted into the fixed section, and the other end of the moving section is the same as the The quadrangular prism-shaped limit sleeves are connected together. When the size of the quadrangular prismatic limit sleeve adapts to the change of the size of the square pile, the quadrangular prismatic limiting sleeve can be connected in the connecting structure of the limiting sleeve, so that the connecting structure of the limiting sleeve is suitable for square piles of different sizes The anti-offset is used, that is, the versatility is good.

Preferably, there are four horizontal connecting rods which are evenly distributed along the circumference of the circular upper sliding rail, and the horizontal connecting rods extend along the radial direction of the circular upper sliding rail. It is convenient to realize the coaxial connection structure of the quadrangular prism-shaped limit sleeve and the circumscribed circle and the limit sleeve, and the coaxiality is convenient to realize the minimization of the radial dimension of the saw blade.

The present invention has the following advantages: it can effectively prevent translation during the lifting process.

Description of drawings

FIG. 1 is a schematic diagram of Embodiment 1 of the present invention.

FIG. 2 is a schematic sectional view taken along the line B-B of FIG. 1 .

FIG. 3 is a schematic diagram of the first embodiment when lifting is performed after being restrained.

FIG. 4 is a schematic diagram of Embodiment 2 of the present invention.

In the figure: support base 1, support plate 11, horizontal support plate 111, vertical support plate 112, reinforcement plate 113, bolt 12, fixing nut 13, vertical tie rod 114, same limit nut 115, quadrangular prism limit sleeve 2. Angle steel 21, horizontal connecting plate 22, square pile 3, platform beam 32, jack 4, limit sleeve connection structure 5, circular slide rail 51, circular slide groove 52, vertical connecting rod 53, connecting ear 531, Assembly bolt 532, assembly nut 533, circular upper chute 54, circular upper slide rail 55, horizontal connecting rod 56, fixed section 561, moving section 562, cutting machine 6, saw blade 61, motor 62, motor connection seat 63 , vertical hinge shaft 64, drive handle 65.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Embodiment 1, referring to FIG. 1 , is a limiting device for truncation and rectification of prefabricated square piles, including a support base 1 and a quadrangular prism limiting sleeve 2 . The support base 1 includes two support plates 11 and several bolts 12 . The support plate 11 includes a flat support plate 111 , a vertical support plate 112 and a reinforcement plate 113 . The horizontal support plate 111 and the vertical support plate 112 are vertically connected together. The reinforcing plate 113 is a right-angled triangle. One right-angle side of the reinforcing plate 113 is connected with the horizontal support plate by welding, and the other right-angle side is connected with the vertical support plate by welding. The two ends of the bolts 12 pass through the vertical support plates of the two support plates in a one-to-one correspondence and then are screwed together with the fixing nuts 13 so that the support plates are clamped and fixed on the square pile.

The quadrangular prism-shaped limiting sleeve 2 includes four angle steels 21 located on the four corners of the quadrangular prism-shaped limiting sleeve and a horizontal connecting plate 22 connecting the angle steels together. It is convenient for the four angle steels 21 to be rectangular and connected in sequence through the horizontal connecting plate 22 . The lower end of the quadrangular prism-shaped limiting sleeve 2 is connected with the support base 1, specifically by welding.

Referring to FIG. 2 , the horizontal connecting plate 22 is connected to the external angle surface of the angle steel 21 .

Referring to FIG. 3 in combination with FIG. 2 and FIG. 1 , the vertical support plate 111 is also connected with a vertical pull rod 114 . The lower end of the vertical tie rod 114 is screwed together with the limit nut 115 after passing through the horizontal support plate 111 .

The jacking method of the present invention is as follows: the two ends of the bolts 12 pass through the vertical support plates of the two support plates in a one-to-one correspondence, and then are screwed together with the fixing nuts 13, so that the support plates are clamped and fixed on the square pile. , the bolt is not worn in the square pile. The upper end of the vertical tie rod 114 is fixed to the cap beam 32 connected to the square pile 3 . Then tighten the limit nut 115. A pair of jacks 4 are placed on the flat support plates 111 of the two support plates in a one-to-one correspondence and are pressed against the platform beams 32 . Cut off square pile 3. After the square pile is cut off, the support base 1 is fixed on the lower section after the square pile is cut off. The four angle steels 21 are buckled on the four corners of the cut-off upper section of the square pile, and then the lower section of the angle steel 21 is welded with the support base 1 to realize the fixing. Then, the adjacent angle steels are connected together through the horizontal connecting plate 22 , and the horizontal connecting plate 22 and the angle steel are welded and fixed to form a quadrangular prism-shaped limiting sleeve 2 . After loosening the limit nut, the platform beam 32 can be lifted by the jack to the required height.

Embodiment two, the difference with embodiment one is:

Referring to FIG. 4 , a limiting sleeve connecting structure 5 is also included. Connect the quadrangular prism-shaped limit sleeve and the support base 1 to the support base 1 (only the support plate 41 is drawn for the support base) through the limit sleeve connection structure 5 . Specifically: the limit sleeve connection structure 5 includes a circular lower rail 51, a circular lower rail 52 rotatably connected to the circular lower rail, a vertical connecting rod 53 whose lower end is connected with the circular lower rail, and a vertical connecting rod 53 connected to the vertical lower rail. A circular upper sliding groove 54 at the upper end of the connecting rod, a circular upper sliding rail 55 rotatably connected to the circular upper sliding groove, and a horizontal connecting rod 56 connected to the circular upper sliding rail at one end. The circular lower rail 51 is fixedly connected with the support base 1 , specifically, welded on the flat support plate 111 . The circular lower slide rail 51 , the circular lower slide slot 52 , the circular upper slide slot 54 and the circular upper slide rail 55 are coaxial. The limit sleeve connection structure 5 is surrounded by two halves distributed in the horizontal direction, that is, the circular lower rail 51, the circular lower groove 52, the circular upper sliding groove 54 and the circular upper sliding rail 55 are all composed of two halves. The semi-circles are butted together to form a circle, and the specific connection method is to set the connecting lugs 531 on the vertical connecting rods 53 located on the two halves, and then pass the assembling bolts 532 through the connecting lugs on the two halves at the same time. It is then connected with the assembly nut 533 to realize the connection of the two halves. There are four horizontal connecting rods 56 and they are evenly distributed along the circumference of the circular upper slide rail 55 . The horizontal connecting rod 56 extends along the radial direction of the circular upper slide rail 55 . The horizontal connecting rod 56 includes a fixed section 561 and a movable section 562 . One end of the fixed section 561 is welded with the circular upper slide rail 55 , and the other end is telescopically sleeved on one end of the movable section 562 . The other end of the moving section 562 is welded with the horizontal connecting plate 22 . The limiting sleeve connecting structure 5 is connected with the cutting machine 6 . The cutting machine 6 includes a horizontally disposed saw blade 61 (that is, the rotating shaft of the saw blade extends in the up-down direction), a motor 62 for driving the saw blade to rotate, and a motor connection base 63 connected with the motor. The motor connecting base 63 is hinged with the circular upper chute 54 through the vertical hinge shaft 64 . The upper end of the vertical hinge shaft 64 is rotatably connected to the upper and lower ends of the circular upper chute 54 and is rotatably connected to the circular lower chute 52 . The vertical hinge shaft 64 is eccentrically arranged with the saw blade 61 . A drive handle 65 is connected to the motor 62 .

The process of cutting and lifting in this embodiment is as follows: the support plate 11 of the support base 1 is fixed on the square pile as in the first embodiment, and the two halves of the limiting sleeve connecting structure 5 are separated and then closed to form a Wrap around the square pile and make the circular lower rail 51 rest on the flat support plate 111 . The four angle steels 21 are buckled on the four corners of the cut-off upper section of the square pile and then connected together by the horizontal connecting plate 22 . Adjust the length of the horizontal connecting rods 56 so that the lengths of the two oppositely arranged ones are equal and abut with the horizontal connecting plate 22, and then the movable section 562 and the horizontal connecting plate 22 are welded and fixed together, so as to realize the quadrangular prism limiting sleeve 2. The connection with the circular upper slide rail 55. Then, the circular lower rail 51 is welded to the flat support plate 111 , so as to connect the limit sleeve connecting structure 5 with the support base 1 . Start the motor 62 and make the motor rotate around the vertical hinge shaft 64 to make the saw blade move towards the square pile to cut the opposite pile, and drive both the circular lower chute 52 and the circular upper chute 54 and the components between them. Rotating on the circular lower rail 51 and the circular upper rail makes the cutter 6 rotate around the square pile, so that the saw blade is not large enough to cut the square pile from one direction to cut the square pile. Finally, the opponent's pile is lifted. After use, disengage the limit sleeve connecting structure 5 from the support seat and the quadrangular prism limit sleeve and take it off for next use.

Claims (5)

1. A limiter for prefabricated square piles to truncate and rectify inclination, is characterized in that, comprises a support seat for being fixed on the lower section after the square pile is cut off and a support seat connected to the support seat for being sleeved on the square pile. The quadrangular prism-shaped limiting sleeve on the upper section of the truncated pile, the quadrangular prism-shaped limiting sleeve includes four angle steels located on the four corners of the quadrangular prism-shaped limiting sleeve and a level connecting the angle steels together. The connecting plate, the limiting device used for the prefabricated square pile to cut off and rectify the inclination also includes a limiting sleeve connecting structure for connecting the quadrangular prism limiting sleeve and the support seat together, and the limiting sleeve connecting structure includes a circular lower rail, A circular lower slide rotatably connected to the circular lower rail, a vertical connecting rod whose lower end is connected with the circular lower slide, a circular upper chute connected to the upper end of the vertical connecting rod, and a circular upper slide rotatably connected to the circular upper slide. The circular upper sliding rail on the groove and the horizontal connecting rod whose one end is connected to the circular upper sliding rail, the circular lower rail is fixedly connected with the support seat, and the other end of the horizontal connecting rod is the same as the The quadrangular prism-shaped limit sleeves are fixedly connected together, and the connecting structure of the limit sleeve is connected with a cutting machine for truncating the opposite pile. The vertical tie rod on the periphery of the bit sleeve, the lower end of the vertical tie rod is connected with the limit nut after passing through the support seat, and the upper end is connected with the cap beam connected to the upper section of the cut square pile. The cutting machine It includes a horizontally arranged saw blade, a motor for driving the saw blade to rotate, and a motor connection seat connected with the motor. The motor connection seat is hinged with the circular upper chute through a vertical hinge shaft. Set eccentrically with the saw blade. 2 . The limiting device for truncation and rectification of prefabricated square piles according to claim 1 , wherein the horizontal connecting plate is connected to the external angle surface of the angle steel. 3 . 3. A limiting device for truncation and rectification of prefabricated square piles according to claim 1 or 2, wherein the limiting sleeve connecting structure is detachably connected by two halves distributed along the horizontal direction surrounded together. 4. A limiting device for prefabricated square piles to truncate and rectify tilt according to claim 1 or 2, wherein the horizontal connecting rod comprises a fixed section connected with the circular upper slide rail and a movable segment, one end of which is telescopically inserted in the fixed segment, and the other end of the movable segment is connected with the quadrangular prism limiting sleeve. 5 . The limiting device for truncation and rectification of prefabricated square piles according to claim 4 , wherein there are four horizontal connecting rods and they are evenly distributed along the circumference of the circular upper slide rail. 6 . , the horizontal connecting rod extends along the radial direction of the circular upper slide rail.