CN109680962B

CN109680962B - Wall construction method based on BIM technology

Info

Publication number: CN109680962B
Application number: CN201811642158.3A
Authority: CN
Inventors: 李红立; 仝童; 李远航; 邹娟娟; 陈洪正; 秦光斌
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-10-27
Anticipated expiration: 2038-12-29
Also published as: CN109680962A

Abstract

The invention relates to the technical field of construction methods of building structures, in particular to a wall construction method based on a BIM technology. This scheme has solved the big and problem that leads to doing over again easily of loss of material when building by laying bricks or stones the wall body among the prior art.

Description

Wall construction method based on BIM technology

Technical Field

The invention relates to the technical field of construction methods of building structures, in particular to a wall construction method based on a BIM technology.

Background

The BIM technology is mainly used for providing a complete building engineering information base consistent with the actual situation for a virtual building engineering three-dimensional model by establishing the model and utilizing a digital technology. The BIM technology is applied to the building engineering, so that the construction efficiency is effectively improved, the resources are saved, and the cost is reduced.

With the spread of BIM technology, more and more construction units begin to use this technology to improve efficiency and control costs. In the masonry work of the wall body, the wall body is generally built by adopting standard bricks, and when a door and window opening needs to be formed in the wall body, the non-standard bricks are required to be used for processing. In general, when in building, the brick discharging and the material cutting are carried out by experienced pugmill according to experience. The manual brick arrangement has lower working efficiency, the chopping loss of materials is increased, and the brick arrangement error can occur to cause the conditions of rework and the like.

Disclosure of Invention

The invention aims to provide a wall construction method based on a BIM technology, and aims to solve the problems that in the prior art, when a wall is built, the loss of materials is large and reworking is easily caused.

The basic scheme of the invention is as follows: the wall construction method based on the BIM technology comprises the following steps:

A. and (3) measurement and paying-off: making a contour line of a horizontal contour of the wall body at a position where the wall needs to be built according to a drawing;

B. erecting a projection device: erecting a projection device at a position opposite to the wall surface, wherein the axis of a projection lens of the projection device is positioned in a vertical symmetrical plane of the wall body; a shading plate which can move vertically and is provided with a projection hole is arranged in front of the projection lens, a telescopic air storage piece used for pushing the shading plate to move upwards is arranged below the shading plate, the telescopic air storage piece is communicated with a heat dissipation air outlet on the projection device, and an exhaust pipe is connected to the telescopic air storage piece;

C. positioning the projection image: b, starting a projection device, moving a light shielding plate forward from a projection lens, enabling the projection device to project a wall structure image, and adjusting the size of the wall image to enable the vertical outline of the wall image to be superposed with the corner points in the same wall surface in the contour line of the horizontal outline of the wall body in the step A; then moving back the light screen to be placed in front of the projection lens again, and adjusting the vertical position of the light screen to enable the wall body image at the bottom of the wall body to pass through the projection hole to be projected at the position of the wall building;

D. building a wall body: selecting bricks with corresponding sizes according to the brick arrangement conditions displayed on the projected wall image, blowing away dregs at positions needing mortar laying by using an exhaust pipe, laying mortar for building, pressing bricks on the mortar, and adjusting the positions of the bricks according to the brick outlines in the wall image corresponding to the bricks until the building of the bricks on the same horizontal plane is finished;

E. moving the projection image: and D, closing the air outlet end of the exhaust pipe to increase the air in the telescopic air storage part due to the fact that the air cannot be smoothly discharged, increasing the volume of the telescopic air storage part and pushing the light screen to move upwards so as to enable the position of the projected wall image to also move upwards, opening the air outlet end of the exhaust pipe when the projected wall image moves to the position of the next layer to be built, enabling the light screen to stop moving upwards, and repeating the operation of the step D.

Compared with the prior art, the scheme has the advantages that: 1. the inside hot-air of projection arrangement is blown out from the louvre to radiator fan discharges through the cover body, telescopic gas storage spare and blast pipe in proper order, and the workman blows off the dregs on brick body surface through using the air current of blowout in the blast pipe when building by laying bricks or stones the wall body, thereby can reduce workman's work burden.

2. After the wall body part projected from the projection hole is built, the worker plugs the exhaust end of the exhaust pipe, so that the internal air of the telescopic air storage piece is increased and extended, the telescopic air storage piece is enabled to push the light shielding plate to move upwards, when the light shielding plate moves to a proper position, the exhaust end of the exhaust pipe is opened, the air in the telescopic air storage piece is exhausted from the exhaust pipe again, the telescopic air storage piece is enabled to stop pushing the light shielding plate, further the projection hole is enabled to project the next wall body information needing building, the worker can conveniently conduct remote operation on the projection, the worker does not need to move back and forth at the position of the projection device and the position of the building wall, and the projection operation is facilitated.

3. The light projected by the projection device can illuminate the masonry work without arranging an additional illumination device, so that the projection device realizes the dual effects of guiding masonry and illumination.

4. The masonry information of the wall body is projected by the projection device, mainly referring to the brick arrangement mode of the wall body, the size of bricks, the size of mortar joints, the distribution condition of holes and the like, then the projection picture is positioned at the masonry position and adjusted to the actual size, workers operate according to the information displayed by the projection picture, when the shading plate needs to be moved upwards, the position of the shading plate is moved to project the distribution information of the bricks at the position of the wall body to be built at once on the building position, then, workers select proper bricks to be built according to the projected pictures, and can quickly master the cutting time and position for some parts needing non-standard brick building, therefore, the dependence on the experience of masonry workers is reduced, the difficulty of work is reduced, and the masonry information is based on the BIM information, so that the masonry quality is ensured, and the occurrence of rework is avoided.

Further, in the step C, before the projection apparatus is turned on, a brick is placed at each of two ends of the horizontal contour line of the wall. A brick block is respectively placed at the end part of the horizontal contour line of the wall body, so that a projected image is conveniently projected on the vertical face of the brick block, the alignment condition of the projected image and the corner point is conveniently observed, and the projected image is conveniently and timely adjusted.

Further, in the step D, a horizontal ruler is used for horizontally correcting the masonry brick body. The horizontal condition of the brick body is corrected by using the horizontal ruler, so that the condition that the brick body inclines is avoided.

Further, in the step D, the brick is knocked by a rubber hammer, so that the position of the brick is adjusted. The bricks can be prevented from being damaged by knocking the bricks by using the rubber hammer, so that the wear of the bricks is reduced.

Further, in the step a, after the contour line of the horizontal contour of the wall is formed, a bisector of the wall perpendicular to the wall surface is formed. By making a bisector of the wall, the position of the projection lens is conveniently positioned when the projection device is erected, so that the projection device is conveniently and quickly erected.

Drawings

FIG. 1 is a front view of a projection apparatus in an embodiment of a wall construction method based on a BIM technique of the present invention

Fig. 2 is a left side view of the visor of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the projection device comprises a guide rod 1, a light screen 2, a projection hole 21, a telescopic air storage piece 3, an exhaust pipe 4, a support 5, a projection lens 6, a shell 7, a cover body 8, a base 9, a guide rail 10, a cam 11 and a friction rod 12.

Example (b): the wall construction method based on the BIM technology comprises the following steps:

A. and (3) measurement and paying-off: making a horizontal outline mark of the wall body at a position where the wall needs to be built according to a drawing, and popping up the horizontal outline of the wall body by using an ink fountain line; and a bisector of the wall body perpendicular to the wall surface is also made.

B. Erecting a projection device: the projection device is erected at a position opposite to a wall surface, and comprises a support 5 as shown in figure 1, wherein a triangular support is welded at the bottom of the support 5; a horizontal guide rail 10 is welded on the upper portion of the support 5, a base 9 is connected on the guide rail 10 in a sliding mode, and the base 9 is connected with the guide rail 10 in a sliding mode through a dovetail groove. The upper side of the base 9 is provided with a projection mechanism, the projection mechanism is a laser projector in the prior art, the projection mechanism comprises a shell 7, the bottom of the shell 7 is provided with four adjusting screws which are distributed in a rectangular shape, the upper parts of the adjusting screws are in threaded connection with the shell 7, and the lower ends of the adjusting screws are in rotating fit with the base 9; the left side of the casing 7 of the projection mechanism is provided with the projection lens 6, the inside of the casing 7 of the projection mechanism is provided with a cooling fan used for cooling the projection lens 6, and the casing 7 of the projection mechanism is also provided with a cooling hole used for the cooling fan to exhaust air. And a cover body 8 is arranged on the outer side of the heat dissipation hole, and the cover body 8 is in sealing adhesion with the shell 7. Two bar levels which are perpendicular to each other and are transversely arranged are embedded at the top of the shell 7. The lower side of the projection lens 6 is connected with an infrared emitter through a bolt, the irradiation direction of the infrared emitter and the two bar levels are respectively and vertically arranged, and the irradiation direction of the infrared emitter is coplanar with the axis of the projection lens 6. The left side of support 5 is equipped with vertical light screen 2, and light screen 2 is just to setting up with projection lens 6, and the face of light screen 2 is perpendicular with the length direction of guide rail 10. Vertical guide rod 1 is welded on support 5, and the both ends of light screen 2 are along vertical and guide rod 1 sliding fit. The shading plate 2 is provided with a projection hole 21, and the projection hole 21 is a strip-shaped hole which is horizontally arranged. The lower side of the shading plate 2 is provided with a telescopic air storage part 3, the telescopic air storage part 3 is preferably an elastic corrugated pipe, the lower end of the elastic corrugated pipe is bonded with the support 5, and the upper end of the elastic corrugated pipe is abutted against the lower end of the shading plate 2. The telescopic air reservoir 3 communicates with the cover 8. The bottom of the telescopic air storage part 3 is hermetically connected with an exhaust pipe 4.

As shown in fig. 2, a locking mechanism is arranged between the light shielding plate 2 and the guide rod 1, the locking mechanism comprises a friction rod 12 and a cam 11 in friction fit with the friction rod 12, and the friction rod 12 is positioned on one side of the guide rod 1 close to the light shielding plate 2 and is welded with the guide rod 1 along a direction parallel to the moving direction of the light shielding plate 2; the cam 11 is rotatably connected with the light shielding plate 2, and the far end of the cam 11 far away from the rotation axis of the cam 11 is positioned at one side of the rotation axis of the cam 11 far away from the friction rod 12, so that the cam 11 is abutted against the friction rod 12 under the action of gravity.

The axis of the projection lens 6 of the projection device is positioned in the vertical symmetry plane of the wall body by adjusting the projection mechanism to be horizontal according to the two bar levels and by using an infrared emitter to irradiate on the bisector of the wall body.

C. Positioning the projection image: placing a brick block at each of two ends of the horizontal contour line of the wall, starting a projection device, moving a light shielding plate 2 forward from a projection lens 6 to enable the projection device to project a wall structure image, and adjusting the size of the wall image to enable the vertical contour of the wall image to coincide with the corner points in the same wall surface in the contour line of the horizontal contour line of the wall manufactured in the step A; then moving back the light screen to be placed in front of the projection lens 6 again, and adjusting the vertical position of the light screen 2 to enable the wall image at the bottom of the wall to pass through the projection hole 21 to be projected at the position of building a wall;

D. building a wall body: selecting bricks with corresponding sizes according to the brick arrangement conditions displayed on the projected wall image, blowing away dregs at positions needing mortar laying by using an exhaust pipe 4, laying mortar for building, pressing bricks on the mortar, leaning against the top surfaces of the bricks by using a horizontal ruler, so as to judge the horizontal conditions of the bricks, knocking the bricks by using a rubber hammer to compact the mortar, adjusting the positions of the bricks according to the brick outlines in the wall image corresponding to the bricks until the bricks on the same horizontal plane are built completely;

E. moving the projection image: the air outlet end of the exhaust pipe 4 is closed, so that the air in the telescopic air storage part 3 is increased due to the fact that the air cannot be smoothly exhausted, the size of the telescopic air storage part 3 is increased, the shading plate 2 is pushed to move upwards, the position of a projected wall image is also moved upwards, and when the projected wall image moves to the position of the next layer needing building, the air outlet end of the exhaust pipe 4 is opened, and the shading plate 2 stops moving upwards. And D, repeating the steps D and E until the wall is built.

Claims

1. The wall construction method based on the BIM technology is characterized by comprising the following steps:

D. building a wall body: selecting the brick bodies with corresponding sizes according to the brick body arrangement condition displayed on the projected wall image,

blowing away dregs at the position where mortar needs to be paved by using an exhaust pipe, paving mortar for building, pressing bricks on the mortar, adjusting the positions of the bricks according to the outlines of the bricks in the wall body image corresponding to the bricks,

until the bricks on the same horizontal plane are built;

2. The BIM technology-based wall construction method according to claim 1, wherein: and C, placing bricks at two ends of the horizontal contour line of the wall body before starting the projection device.

3. The BIM technology-based wall construction method according to claim 2, wherein: and D, using a horizontal ruler to horizontally correct the masonry brick body.

4. The BIM technology-based wall construction method according to claim 3, wherein: and D, knocking the brick by using a rubber hammer so as to adjust the position of the brick.

5. The BIM technology-based wall construction method according to claim 4, wherein: in the step A, after the contour line of the horizontal contour of the wall body is formed, a bisector of the wall body perpendicular to the wall surface is formed.