CN113898195B - An assembled concrete structure wall column hoisting guide positioning device and construction method - Google Patents

Abstract

The invention relates to an assembly type concrete structure wall column hoisting guiding and positioning device and a construction method. The device can be repeatedly used, is convenient for hoisting, guiding and positioning the wall and the column of the fabricated concrete structure, and improves the working efficiency.

Description

An assembled concrete structure wall column hoisting guide positioning device and construction method

technical field

The invention relates to a hoisting guide positioning device and a construction method for a prefabricated concrete structure wall column.

Background technique

In recent years, prefabricated structures have been vigorously promoted and applied because of their advantages such as short construction period, low labor intensity, environmental protection, standardized production of components in factories, etc., which are in line with the development of building industrialization. However, for the hoisting of precast walls and columns of prefabricated concrete structures, at least 3 workers are required to cooperate on-site when the crane lifts the components to the vicinity of the pre-installation position, and 2 of them cooperate with the crane by lifting the pole and pushing them by hand Move the prefabricated walls and columns slowly. At the same time, another worker squatted down and held a mirror to look at the position of the sleeve at the bottom of the prefabricated wall and column; the hoisting of each component was carried out in such a way that the three workers on site cooperated with the crane to align the sleeve at the bottom of the prefabricated wall and column with the lower part The exposed reinforcement of the constructed member is then slowly lowered.

The traditional hoisting method has cumbersome procedures on the construction site, and many workers need ready-made cooperation, which poses a greater safety hazard to squatting mirror holders; during the hoisting process, the components are easy to scratch the reserved steel bars, causing deformation of the steel bars and resulting in installation failure or installation failure. The clearance of the rear connecting reinforcement sleeve does not meet the requirements stated in the code, which affects the mechanical performance of the structure. At the same time, relying on more manual cooperation, the utilization rate of cranes is low, resulting in low overall construction efficiency and poor economic benefits.

Contents of the invention

The purpose of the present invention is to provide a prefabricated concrete structure wall column hoisting guide positioning device and construction method. The device can be used repeatedly, which is convenient for the prefabricated concrete structure wall and column hoisting guide positioning, and improves work efficiency.

The technical solution of the present invention is: a prefabricated concrete structure wall column hoisting guide positioning device, including a pre-embedded component for pre-embedded in the floor, a support component is fixed on the pre-embedded component, the front of the support component A positioning guide rod is vertically arranged on the side, and an adjustment mechanism for adjusting the position and verticality of the positioning guide rod is arranged on the support assembly.

Further, the support assembly includes a fixing plate, on which two parallel triangular trusses are fixed side by side, and a gap between the two triangular trusses is formed to avoid the positioning guide rod.

Further, the adjustment mechanism includes a support adjustment rod hinged on the upper and lower parts of the positioning guide rod, an upper positioning bracket is installed on the upper rear side of the support assembly, and the rear part of the upper support adjustment rod passes through the upper positioning bracket and Locked by the adjusting nut, a lower positioning bracket is installed on the rear side of the lower part of the support assembly, and the rear part of the lower supporting adjustment rod passes through the lower positioning bracket and is locked by the adjusting nut.

Further, the support adjustment rod is a screw rod and the front end is hinged to the rear side of the positioning guide rod through a hinge, and a pair of adjustment nuts are screwed on each support adjustment rod.

Further, the positioning guide rod is a rectangular steel pipe with an arc-shaped lower end.

Further, the pre-embedded component includes a horizontal reinforcement ring fixedly connected to the lower end of the support component, and vertical connecting rods are fixed at intervals on the lower side of the horizontal reinforcement ring.

Further, the horizontal reinforcing ring is connected to the lower end of the support assembly through electric spot welding, and four vertical connecting rods are fixed at intervals on the lower side of the horizontal reinforcing ring.

A construction method for hoisting, guiding and positioning a prefabricated concrete structure wall and a column, comprising a hoisting, guiding and positioning device for a prefabricated concrete structure wall and a column, and the steps are as follows:

1) Prefabricated concrete structure wall and column hoisting guide positioning device;

2) Prepare the prefabricated lower column, the prefabricated upper column and the prefabricated beam connected to the upper end of the prefabricated lower column. The upper part of the beam is provided with beam stirrups and bound with beam longitudinal bars, and the concrete is poured on site to form the superimposed part of the cast-in-situ concrete. The transverse beam steel bars pierced from the top, and the lower end of the prefabricated upper column is pre-embedded with a connecting sleeve for sleeve grouting connection;

3) Lift the prefabricated lower column and the prefabricated beam connected to the upper end of the prefabricated lower column, and correct the overhanging steel bars at the upper end of the prefabricated lower column and the end of the prefabricated beam;

4) On-site pouring of concrete in the core area of joints and superimposed parts of laminated beams and slabs, so that the pouring plane meets the construction requirements;

5) When pouring concrete and before the concrete is solidified, preliminarily position the pre-embedded components with reference to the position of the exposed steel bars of the prefabricated lower column, and at the same time insert the vertical steel bars of the pre-embedded components into the concrete, and expose the horizontal steel bars to the concrete pouring surface;

6) After the concrete is hardened, place the fixing plate of the supporting component on the horizontal reinforcement ring, and check the approximate relative position of the fixing plate and the exposed steel bars of the prefabricated lower column; make one side of the fixing plate roughly parallel to the side of the exposed steel bar of the prefabricated lower column , and the distance is 3-5 cm; and the fixed plate of the support assembly is connected with the horizontal steel ring by spot welding;

7) Adjust the position and verticality of the positioning guide rods by adjusting the actual support lengths of the upper and lower support adjustment rods of the two guide positioning devices on the same side respectively, so that the positioning guide rods of the two guide positioning devices form a first a plane, the first plane is close to the edge of the prefabricated column and perpendicular to the horizontal plane;

8) In the same way as step 7), adjust the other two guiding and positioning devices on the adjacent column sides so that the positioning guide rods of the two guiding and positioning devices form a second plane, which is close to the prefabricated column side and perpendicular to the Level ground and first plane;

9) The prefabricated column is lifted, and the workers cooperate to push the prefabricated column to be close to the first plane and the second plane to complete the positioning of the prefabricated component;

10) Review and adjust the verticality of prefabricated columns, and install temporary supports for prefabricated components;

11) Disassemble the guide positioning device;

12) Hook loose hook;

13) Complete the joints of prefabricated columns and the grouting of sleeve connections.

Compared with the prior art, the present invention has the following advantages:

1. In addition to the pre-embedded unit, the device can be disassembled and assembled for repeated use, and the unit cost is low after equalization.

2. The device can reduce the labor of cooperating personnel at the hoisting site and avoid the safety hazards of squatting workers.

3. The device can reduce the total working time of the crane, improve the efficiency of the crane, and thus improve economic benefits.

4. The device can be used in conjunction with the existing invention patent "Assembled concrete structure column hoisting elevation and verticality adjustment device and its construction method (201811420030.2)". The pre-embedded units of the two are integrated and pre-embedded together, and the construction method is simple. It can improve the installation position accuracy of wall and column hoisting, ensure the quality of the project and improve the overall benefit.

Description of drawings

Fig. 1 is the device structure schematic diagram of the present invention;

Fig. 2 is the right side view of Fig. 1 of the present invention;

Fig. 3 is a cross-sectional view of the device of the present invention;

Fig. 4 is a sectional view of the initial state of the device of the present invention;

Fig. 5 is a top view of the working state of the device of the present invention;

Fig. 6 is a sectional view of the working state of the device of the present invention;

Fig. 7 is a schematic diagram of the forward tilt adjustment of the device due to uneven ground and other reasons of the present invention;

Fig. 8 is a schematic diagram of reclining adjustment of the device due to uneven ground and other reasons of the present invention;

Fig. 9 is a schematic diagram of deflection adjustment of the device due to uneven site and other reasons of the present invention;

In the figure: 1~supporting component; 2~adjusting mechanism; 3~positioning guide rod; 4~embedded component; 5~fixing plate; 6~triangular truss; ;9~Lower positioning bracket; 10~Adjusting nut; 11-Hinge; 12~Horizontal steel ring; 13~Vertical connecting rod; 14~Prefabricated upper column; 15~Prefabricated lower column; Rebar connection sleeve reserved for prefabricated upper column 18~reserved longitudinal reinforcement; 19~reserved stirrup; 20~prefabricated beam; 21~cast-in-place superimposed part; 22~first plane; 23~second plane.

Detailed ways

In order to make the above-mentioned features and advantages of the present invention easier to understand, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

Refer to Figure 1 to Figure 9

A prefabricated concrete structure wall column hoisting guide and positioning device, including a pre-embedded component 4 for pre-embedded in the floor slab, a support component 1 is fixed on the pre-embedded component, and the front side of the support component is vertically provided with The positioning guide rod 3 is provided with an adjustment mechanism 2 for adjusting the position and verticality of the positioning guide rod on the support assembly.

In this embodiment, in order to better install the positioning guide rod, the support assembly includes a fixing plate 5, and the fixing plate is a steel plate. Two parallel triangular trusses 6 are fixed side by side on the fixed plate, a gap 6a is formed between the two triangular trusses to avoid the positioning guide bar, and there is enough space between the two parallel triangular trusses 6 to place the positioning guide bar. width.

In this embodiment, in order to better adjust the position and verticality of the positioning guide rod, the adjustment mechanism includes a support adjustment rod 8 hinged on the upper and lower parts of the positioning guide rod. Bracket 7, the rear part of the support adjustment rod positioned at the upper part passes through the upper positioning bracket and is locked by an adjustment nut 10, the lower positioning bracket 9 is installed on the rear side of the lower part of the support assembly, and the rear part of the support adjustment rod positioned at the lower part passes through the lower part Position the bracket and lock it through the adjusting nut 10. Therefore, by adjusting the position of the adjusting nut, the actual supporting length of the supporting assembly horizontally supporting the adjusting rod is changed, thereby adjusting the position and verticality of the positioning guide rod.

In this embodiment, the support adjustment rod is a screw rod and the front end is hinged with the rear side of the positioning guide rod through a hinge 11, and a pair of adjustment nuts 10 are screwed on the support adjustment rod, so as to cooperate with the corresponding positioning bracket to complete the locking.

In this embodiment, the positioning guide rod is a rectangular steel pipe with an arc-shaped lower end to avoid interference during adjustment.

In this embodiment, in order to facilitate the installation of the device, the pre-embedded component includes a horizontal steel ring 12 fixedly connected to the lower end of the support component, and the horizontal steel ring is connected to the lower end of the support component by electric spot welding to play a role in fixing. The role of support component 1. The lower side of the horizontal reinforcing ring is fixed with four vertical connecting rods 13 at intervals, and the vertical connecting rods are steel bars of φ8, which are convenient for taking materials.

The device combines the embedded parts of the existing invention patent "Assembled concrete structure column hoisting elevation and verticality adjustment device and its construction method (201811420030.2)", and both are embedded at the same time.

A construction method for hoisting, guiding and positioning a prefabricated concrete structure wall and a column, comprising a hoisting, guiding and positioning device for a prefabricated concrete structure wall and a column, and the steps are as follows:

1) Prefabricated concrete structure wall and column hoisting guide positioning device;

2) Prepare the prefabricated lower column 15, the prefabricated upper column 14 and the prefabricated beam 20 connected to the upper end of the prefabricated lower column. The connection between the beam end of the prefabricated beam 20 and the upper end of the prefabricated lower column 15 is the core of the cast-in-place concrete node The upper part of the prefabricated beam 20 is provided with beam stirrups 19 and bound with beam longitudinal reinforcement 18, the concrete is poured on site to form a cast-in-place concrete superposition part 21, and the upper end of the prefabricated lower column 15 is provided with precast columns at intervals The vertical steel bar 16 and the transverse beam steel bar passing through the beam end of the prefabricated beam 20, the lower end of the prefabricated upper column 14 is pre-embedded with a connecting sleeve 17 for sleeve grouting connection;

3) Hoist the prefabricated lower column 15 and the prefabricated beam 20 connected to the upper end of the prefabricated lower column 15, and correct the overhanging steel bars at the upper end of the prefabricated lower column 15 and the end of the prefabricated beam 20;

4) On-site pouring of concrete in the core area of joints and superimposed parts of laminated beams and slabs, so that the pouring plane meets the construction requirements;

5) Before the concrete is poured and the concrete is solidified, preliminarily locate the pre-embedded component 4 with reference to the position of the exposed steel bars of the prefabricated lower column 15 (make one side of the iron ring roughly parallel to the side of the exposed steel bars of the prefabricated lower column 15, with a distance of 3-5 cm), and at the same time insert the four vertical steel bars 13 of the pre-embedded component 4 into the concrete, and expose the horizontal steel bar ring 12 to the concrete pouring surface;

6) After the concrete is hardened, place the fixing plate 5 of the support assembly 1 on the horizontal reinforcement ring, and check the approximate relative position of the fixing plate 5 and the exposed steel bars of the prefabricated lower column 15; The whole row on one side is roughly parallel and 3-5 centimeters apart; and the fixed plate 5 of the support assembly is connected with the horizontal reinforcing ring 12 by spot welding;

7) Adjust the position and verticality of the positioning guide rod 3 by adjusting the actual support lengths of the upper and lower support adjustment rods 8 of the two guide positioning devices on the same side, so that the positioning guide rod 3 of the two guide positioning devices Form a first plane 22, which is close to the edge of the prefabricated column and perpendicular to the horizontal plane;

8) In the same way as step 7), adjust the other two guide positioning devices on the adjacent column side, so that the front side of the positioning guide rod 3 of the two guide positioning devices forms a second plane 23, which is close to the prefabricated The side of the column is perpendicular to the horizontal ground and the first plane 22;

9) The prefabricated column is lifted, and the workers cooperate to push the prefabricated column to be close to the first plane 22 and the second plane 23 to complete the positioning of the prefabricated component;

10) Review and adjust the verticality of prefabricated columns, and install temporary supports for prefabricated components;

11) Disassemble the guide positioning device;

12) Loose hooks for lifting prefabricated columns;

13) Complete the joints of prefabricated columns and the grouting of sleeve connections.

Combining Figures 1 to 9, the working status of the prefabricated concrete structure wall and column hoisting guide positioning device is as follows:

As shown in Figure 4, in the initial state of the prefabricated concrete structure wall and column hoisting guide positioning device, there are three or four devices, which are respectively placed on the adjacent two sides of the prefabricated column, fixed on the pre-embedded component 4, and the upper and lower support adjustments are adjusted. The actual support length of bar 8 adjusts the position and the verticality of positioning guide bar, constructs vertical plane, makes the vertical plane that two groups of guiding and positioning devices are constructed respectively perpendicular to each other and is all perpendicular to horizontal plane.

As shown in Figure 6, when the prefabricated concrete structure wall and column hoisting guide and positioning device are in working state, the prefabricated upper column 14 is hoisted above the two sets of devices, and the prefabricated upper column 14 is pushed to be close to the first plane 22 and the second plane. The second plane 23, the prefabricated upper column 14 is hoisted directly downward, the reserved column steel bar 16 extends into the steel bar connection sleeve 17 of the prefabricated upper column, and the gap between the reserved column steel bar 16 and the steel bar connection sleeve 17 complies with the specifications, temporary installation Support and hoisting are complete.

As shown in Figures 7 to 9, because the concrete floor of the cast-in-place laminated layer may not be completely horizontal or the initial positioning deviation, the device may lean forward (Figure 7), lean back (Figure 8) or The placement of the deflection (Figure 9), at this time, can be achieved through the adjustment mechanism to achieve the working state, the specific method is shown in the figure.

The above descriptions are only preferred embodiments of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, it is not necessary to design different forms of prefabricated concrete structure wall column hoisting guide positioning devices and construction methods. Creative work, without departing from the principle and spirit of the present invention, all equivalent changes, modifications, replacements and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (4)

1. The device for hoisting, guiding and positioning the wall column of the prefabricated concrete structure is characterized by comprising a pre-buried assembly pre-buried in a floor slab, wherein a supporting assembly is fixed on the pre-buried assembly, a positioning guide rod is vertically arranged on the front side of the supporting assembly, and an adjusting mechanism for adjusting the position and the vertical degree of the positioning guide rod is arranged on the supporting assembly; the supporting assembly comprises a fixed plate, two parallel triangular trusses are fixed on the fixed plate side by side, and a gap avoiding the positioning guide rod is formed between the two triangular trusses; the adjusting mechanism comprises a supporting adjusting rod hinged to the upper part and the lower part of the positioning guide rod, an upper positioning support is mounted on the rear side of the upper part of the supporting assembly, the rear part of the supporting adjusting rod positioned on the upper part penetrates through the upper positioning support and is locked by an adjusting nut, a lower positioning support is mounted on the rear side of the lower part of the supporting assembly, and the rear part of the supporting adjusting rod positioned on the lower part penetrates through the lower positioning support and is locked by the adjusting nut; the positioning guide rod is a rectangular steel pipe, and the lower end of the positioning guide rod is arc-shaped; the embedded component comprises a horizontal steel bar ring fixedly connected with the lower end of the supporting component, and vertical connecting rods are fixed on the lower side of the horizontal steel bar ring at intervals.

2. The device as claimed in claim 1, wherein the support adjusting rod is a screw rod, the front end of the support adjusting rod is hinged to the rear side of the positioning guide rod via a hinge, and the support adjusting rod is screwed with a pair of adjusting nuts.

3. The apparatus as claimed in claim 1, wherein the horizontal reinforcing rings are spot welded to the lower ends of the supporting members, and four vertical links are fixed to the lower sides of the horizontal reinforcing rings at intervals.

4. A construction method for hoisting, guiding and positioning prefabricated concrete structure walls and columns comprises the device for hoisting, guiding and positioning prefabricated concrete structure walls and columns as claimed in claim 1, and is characterized by comprising the following steps:

1) Prefabricating a prefabricated concrete structure wall and column hoisting guide positioning device;

2) Preparing a prefabricated lower column, a prefabricated upper column and a prefabricated beam connected to the upper end of the prefabricated lower column, wherein the connection between the beam end of the prefabricated beam and the upper end column head of the prefabricated lower column is a cast-in-place concrete node core area, beam stirrups are arranged on the upper portion of the prefabricated beam and bound with beam longitudinal reinforcements, cast-in-place concrete is formed in a cast-in-place concrete superposed position, prefabricated column vertical reinforcements and transverse beam reinforcements penetrating out of the beam end of the prefabricated beam are arranged on the upper end column head of the prefabricated lower column at intervals, and a connecting sleeve for sleeve grouting connection is pre-buried in the lower end column head of the prefabricated upper column;

3) Hoisting the prefabricated lower column and the prefabricated beam connected to the column cap at the upper end of the prefabricated lower column, and correcting the overhanging steel bars at the upper end of the prefabricated lower column and the end of the prefabricated beam;

4) Concrete at the core area of the node and the superposed part of the superposed beam slab is cast in situ, so that the casting plane reaches the plane required by construction;

5) When concrete is poured and before the concrete is solidified, preliminarily positioning the embedded assembly according to the position of the exposed steel bar of the prefabricated lower column, simultaneously inserting the vertical steel bar of the embedded assembly into the concrete, and exposing the horizontal steel bar ring out of the concrete pouring surface;

6) After the concrete is hardened, placing the fixing plate of the supporting assembly on the horizontal reinforcing ring, and rechecking the approximate relative position of the fixing plate and the exposed reinforcing steel bar of the prefabricated lower column; one side of the fixing plate is approximately parallel to the whole row of one side of the exposed steel bar of the prefabricated lower column, and the distance is 3-5 cm; connecting the fixing plate of the supporting component with the horizontal reinforcing steel bar ring by spot welding;

7) The position and the vertical degree of the positioning guide rod are adjusted by respectively adjusting the actual supporting length of the upper supporting adjusting rod and the lower supporting adjusting rod of the two guiding and positioning devices on the same side, so that the positioning guide rods of the two guiding and positioning devices form a first plane which is tightly attached to the edge of the prefabricated column and is vertical to the horizontal plane;

8) Step 7) in the same manner, adjusting the other two guiding and positioning devices of the adjacent column edges to enable the positioning guide rods of the two guiding and positioning devices to form a second plane, wherein the second plane is tightly attached to the prefabricated column edge and is vertical to the horizontal ground and the first plane;

9) Hoisting the prefabricated column, and pushing the prefabricated column to be tightly attached to the first plane and the second plane by workers in a matching way to finish the positioning of the prefabricated part;

10 Rechecking and adjusting the verticality of the prefabricated column, and installing a temporary support of the prefabricated part;

11 Detaching the guiding and positioning device;

12 Hook release);

13 Grouting for completing joints of prefabricated columns and sleeve joints.

Images