Connecting and positioning device for upper-layer weak and lower-layer karst rock stratum latticed column and cast-in-place pile

Abstract

The utility model discloses an upper layer soft lower layer karst rock stratum latticed column and cast-in-place pile connecting and positioning device which comprises a three-dimensional frame, the middle of the three-dimensional frame is provided with a space for the latticed column to penetrate through, and a calibration mechanism used for adjusting the perpendicularity and the center position of the latticed column is arranged on the three-dimensional frame and located on the periphery of the latticed column. In the connection construction of the latticed column and the cast-in-place pile, the perpendicularity of the latticed column is calibrated through the calibration adjusting mechanism, the perpendicularity is accurate, the deviation conforms to the specification, the horizontal resistance to the latticed column is increased, transverse displacement is avoided, the overturning resistance and the impact resistance are enhanced, and the service life of the latticed column is prolonged. When the lattice column cast-in-place pile connecting device is used, the elevation of a lattice column can be controlled, the lattice column cannot sink, after the concrete is poured, the lattice column is fixed by using the lattice column connecting device under the condition that cement mortar is not condensed, the lattice column cannot float and settle, and the pile forming quality is qualified and meets the requirement.

Description

Technical Field

[0001] The utility model belongs to the construction technology of connecting lattice columns and cast-in-place piles, in particular to a connection positioning device of lattice columns and cast-in-place piles in upper soft and lower karst strata. Background Art

[0002] In the construction of the connection between the lattice column and the bored pile, the construction work is carried out under the complex stratum environment conditions such as weak silt layer and sand layer. In addition, the concrete of the bored pile is relatively weak after pouring. When the lattice column is inserted, the pile is often deviated and floated. The progress and quality of the connection between the lattice column and the bored pile cannot be guaranteed. The reasons are:

[0003] ⑴ Due to the construction in soft silt layer, sand layer, relatively soft cast-in-place concrete and other environments, on the one hand, the lattice column positioning card is buried in a biased position, and on the other hand, during construction, the weak foundation positioning card is vibrated and displaced, resulting in deviation from the calibration verticality.

[0004] (2) The lattice column is directly embedded in the cast-in-place pile. Due to the large friction resistance and the fact that part of the foundation is soft and part is hard, an inclined pile body is formed.

[0005] ⑶ The lattice columns are directly embedded in the cast-in-place piles. Due to the fast speed and one-time forming, no attention is paid to the intermediate calibration of verticality.

[0006] (4) After the lattice column and the cast-in-place pile are connected and formed, the finished product is not fixed. When the concrete has not solidified, the lattice column may float or sink due to surrounding vibrations, abundant groundwater, slurry gushing and other problems. Utility Model Content

[0007] The utility model aims to provide a lattice column and cast-in-place pile connection and positioning device for improving the installation accuracy of the lattice column and the quality of the pile.

[0008] The purpose of the utility model is achieved through the following technical measures: a connection and positioning device for lattice columns in upper soft and lower karst strata and cast-in-place piles, characterized in that it includes a three-dimensional frame, the middle part of which has a space for the lattice columns to pass through, and a calibration mechanism for adjusting the verticality and center position of the lattice columns is provided on the three-dimensional frame and located around the lattice columns.

[0009] In the construction of connecting the lattice column and the cast-in-place pile, the verticality of the lattice column is calibrated by the calibration and adjustment mechanism of the utility model. The verticality is accurate and the deviation meets the requirements of the specifications. By using the utility model, the horizontal resistance of the lattice column is increased, and it will not undergo lateral displacement, and the anti-overturning and impact capabilities are enhanced. When pouring concrete during the connection of the lattice column cast-in-place pile, the lattice column elevation can be controlled by using the utility model, and the lattice column will not sink. After the concrete is poured, when the cement mortar is not solidified, the lattice column is fixed by using the utility model, and the lattice column will not float or sink, thereby solving the problems of lattice column deviation, floating, sinking, etc., and the pile quality meets the requirements.

[0010] The three-dimensional frame of the utility model is a rectangular frame, which is composed of an outer frame and an inner frame connected thereto. The inner frame and the outer frame are both connected by vertical rods and transverse rods. The calibration mechanism is located on the transverse rods of the inner frame, and the middle space of the inner frame can be used for lattice columns to pass through.

[0011] The calibration mechanism of the utility model includes an adjusting screw and an adjusting block, wherein the adjusting screw is installed on the transverse rod of the inner frame and threadedly cooperates therewith, and the adjusting block includes a support fixed on the transverse rod of the inner frame, a movable top block slidably installed on the support, and a positioning component for positioning the movable top block adjusted into place, and the positioning component is installed on the support.

[0012] The utility model utilizes a plurality of upper and lower adjusting screws and adjusting blocks of a positioning device to adjust the center and verticality of a lattice column, and achieves the purpose of more accurately controlling the installation accuracy of the lattice column through the deadweight of the lattice column and the correction force transmission of the positioning device.

[0013] The utility model provides an adjusting screw and a pair of adjusting blocks on each transverse rod. The adjusting screw is located in the middle of the transverse rod, and the pair of adjusting blocks are located on both sides of the adjusting screw.

[0014] The utility model provides an adjusting screw and an adjusting block for adjusting the verticality of the lattice column, which are located on the upper middle transverse rod body of the inner frame, and an adjusting screw and an adjusting block for adjusting the lattice column center and the pile center to be in the same straight line, which are located on the lower middle transverse rod body of the inner frame.

[0015] The utility model is provided with adjustable feet at the bottom end of the outer frame.

[0016] The adjustment accuracy deviation Q of the calibration mechanism of the utility model is less than or equal to 2.8 mm, where Q represents the adjustment accuracy range of the calibration mechanism.

[0017] Compared with the prior art, the utility model has the following significant effects:

[0018] In the construction of connecting the lattice column and the cast-in-place pile, the verticality of the lattice column can be calibrated through the calibration and adjustment mechanism of the utility model. The verticality is accurate and the deviation meets the requirements of the specifications. In addition, by using the utility model, the horizontal resistance of the lattice column is increased, and it will not undergo lateral displacement, and the anti-overturning and impact capabilities are enhanced. When pouring concrete during the connection of the lattice column cast-in-place pile, the lattice column elevation can be controlled by using the utility model, and the lattice column will not sink. After the concrete is poured, when the cement mortar is not solidified, the lattice column is fixed by using the utility model, and the lattice column will not float or sink, thereby solving the problems of lattice column deviation, floating, sinking, etc., and the pile quality meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model (with a lattice column passing through the middle);

[0021] Figure 2 It is a top view of the utility model (with the lattice column passing through the middle);

[0022] Figure 3 It is a side sectional view of the utility model (with the lattice column passing through the middle);

[0023] Figure 4 The utility model is applied to the connection construction of lattice columns and cast-in-place piles. DETAILED DESCRIPTION

[0024] like Figures 1 to 4 As shown, a lattice column and cast-in-place pile connection and positioning device 9 of the utility model is provided, which includes a three-dimensional frame. In the present embodiment, the three-dimensional frame is a rectangular frame, which is composed of an outer frame 1 and an inner frame 2 connected thereto. The inner frame 2 and the outer frame 1 are both connected by vertical rods and transverse rods. The middle space of the inner frame 2 can be used for the lattice column 3 to pass through. The transverse rods of the inner frame 2 are located at the periphery of the lattice column 3. A calibration mechanism for adjusting the verticality and center position of the lattice column is provided on the transverse rods of the inner frame 2.

[0025] In this embodiment, the utility model is an outer frame welded by a combination of materials such as ∠125×10, 1 / 4 inch steel pipe, [16 channel steel, _16 steel plate, M40 adjusting bolts, etc., with a length of 2m×width of 2m×height of 1m, and an inner frame with a length of 0.8m×width of 0.8m×height of 0.8m.

[0026] In this embodiment, the calibration mechanism includes an adjusting screw 4 and an adjusting block 5. The adjusting screw 4 is mounted on the transverse rod of the inner frame 2 and threadedly matched therewith. The adjusting block 5 includes a support 6 fixed on the transverse rod of the inner frame 2, a movable top block 7 slidably mounted on the support 6, and a positioning component for positioning the movable top block 7 adjusted into place, and the positioning component is mounted on the support 6. The adjusting screw 4 and the adjusting block 5 adjust the center and verticality of the lattice column 3 by touching it. The adjustment accuracy deviation Q of the calibration mechanism is ≤2.8mm, and Q represents the adjustment accuracy range of the calibration mechanism.

[0027] In this embodiment, an adjusting screw 4 and a pair of adjusting blocks 5 are provided on each transverse rod. The adjusting screw 4 is located in the middle of the transverse rod and corresponds to the middle of the outer wall of the lattice column 3. The pair of adjusting blocks 5 are located on both sides of the adjusting screw 4 and correspond to both sides of the outer wall of the lattice column 3. In this embodiment, a total of eight adjusting blocks 5 and four adjusting screws 4 are provided on the four upper transverse rods in the inner frame 2, and a total of eight adjusting blocks 5 and four adjusting screws 4 are provided on the four lower transverse rods. The adjusting screws 4 and adjusting blocks 5 on the upper transverse rods are used to adjust the verticality of the lattice column, and the adjusting screws 4 and adjusting blocks 5 on the lower transverse rods are used to adjust the center of the lattice column and the pile center to be in the same straight line.

[0028] An adjustable foot 8 is provided at the bottom end of the outer frame 1 .

[0029] The correction principle of the utility model is as follows: the center line and verticality of the lattice column are adjusted by using the adjusting screw and the adjusting block on the positioning device, and the installation accuracy of the lattice column is more accurately controlled through the deadweight of the lattice column and the correction force of the positioning device; the center line of the positioning device, the pile axis and the center line of the lattice column are corrected to be consistent, and the displacement deviation of the lattice column front, back, left and right is adjusted, and the positioning accuracy is adjusted to be less than 2.8mm (Q≤2.8mm).

[0030] The pile position calibration point, the calibration point on the positioning device, and the lattice column calibration point are in a straight line, and the verticality meets the requirements. The verticality of the lattice column is adjusted by the upper adjusting screw and adjusting block in the calibration mechanism, and the center of the lattice column is adjusted to be in the same straight line with the pile center by the lower adjusting screw and adjusting block in the calibration mechanism. According to the process of the lattice column entering the cast-in-place pile, three calibrations are performed to adjust the verticality of the front and rear, left and right lattice columns. The adjustment amount for each adjustment is about 1.4mm, and the accuracy reaches 1.4mm≤Q≤2.8mm (Q represents the adjustment accuracy range of the calibration mechanism). The standard specification column allows a deviation of ≤10mm, and the positioning device adjustment accuracy deviation is Q≤2.8mm (Q represents the adjustment accuracy range of the calibration mechanism).

[0031] The implementation methods of the utility model are not limited to this. According to the above content of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the utility model, the calibration mechanism of the utility model also has other implementation methods. Therefore, the utility model can also make other various forms of modifications, replacements or changes, all of which fall within the scope of protection of the utility model.

Claims

1. A device for connecting and positioning lattice columns and cast-in-place piles in upper soft and lower karst strata, characterized in that: The invention comprises a three-dimensional frame, the middle part of which is provided with a space for the lattice column to pass through, and a calibration mechanism for adjusting the verticality and the center position of the lattice column is arranged on the three-dimensional frame and around the lattice column.

2. The upper soft lower karst stratum lattice column and cast-in-place pile connection and positioning device according to claim 1 is characterized by: The three-dimensional frame is a rectangular frame, which is composed of an outer frame and an inner frame connected thereto. The inner frame and the outer frame are both connected by vertical rods and transverse rods. The calibration mechanism is located on the transverse rods of the inner frame, and the middle space of the inner frame can allow lattice columns to pass through.

3. The upper soft lower karst stratum lattice column and cast-in-place pile connection and positioning device according to claim 2, characterized in that: The calibration mechanism includes an adjusting screw and an adjusting block, wherein the adjusting screw is mounted on the transverse rod of the inner frame and threadedly cooperates therewith, and the adjusting block includes a support fixed on the transverse rod of the inner frame, a movable top block slidably mounted on the support, and a positioning component for positioning the movable top block adjusted into place, wherein the positioning component is mounted on the support.

4. The device for connecting and positioning lattice columns and bored piles in upper soft and lower karst strata according to claim 3 is characterized by: An adjusting screw and a pair of adjusting blocks are arranged on each transverse rod. The adjusting screw is located in the middle of the transverse rod, and the pair of adjusting blocks are located on both sides of the adjusting screw.

5. The device for connecting and positioning lattice columns and bored piles in upper soft and lower karst strata according to claim 4, characterized in that: The adjusting screw and adjusting block for adjusting the verticality of the lattice column are located on the transverse rod body in the upper middle of the inner frame, and the adjusting screw and adjusting block for adjusting the lattice column center and the pile center to be in the same straight line are located on the transverse rod body in the lower middle of the inner frame.

6. The device for connecting and positioning lattice columns and bored piles in upper soft and lower karst strata according to claim 5, characterized in that: The adjustment accuracy deviation of the calibration mechanism is Q≤2.8mm, where Q represents the adjustment accuracy range of the calibration mechanism.

7. The device for connecting and positioning lattice columns and bored piles in upper soft and lower karst strata according to claim 6, characterized in that: An adjustable foot is arranged at the bottom of the outer frame.

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