CN111395799A - Low-disturbance basement communication port outer wall efficient dismantling construction method - Google Patents
Low-disturbance basement communication port outer wall efficient dismantling construction method Download PDFInfo
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- CN111395799A CN111395799A CN202010219782.3A CN202010219782A CN111395799A CN 111395799 A CN111395799 A CN 111395799A CN 202010219782 A CN202010219782 A CN 202010219782A CN 111395799 A CN111395799 A CN 111395799A
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Abstract
A construction method for efficiently dismantling an outer wall of a low-disturbance basement communication port comprises the following steps: firstly, paying off operation preparation and measurement, discharging a dismantling control line withdrawal, a block cutting line and a cutting guide line within the range of a wall to be dismantled, and determining a water drilling hole site; step two, installing a steel plate fixing clamping seat, installing a horizontal steel plate fixing clamping seat on the underground outdoor wall, and installing a vertical steel plate fixing clamping seat on the outer wall coupling beam; cutting by a wire saw, namely cutting along the block cutting line and the cutting guide line by using a wire saw; drilling holes on the water drill, drilling holes on the water drill punching position by using a water drilling machine, punching lifting holes on the wall to be dismantled, and respectively installing high-strength steel templates in the horizontal steel plate manufacturing clamp seat and the vertical steel plate manufacturing clamp seat; and fifthly, hoisting the wall blocks, and inserting hoisting chain chains in the hoisting holes to hoist by using a crane. The invention can solve the problems that the fracture surface is damaged and the surrounding structure is endangered due to severe vibration generated by the traditional air pick crushing construction method.
Description
Technical Field
The invention belongs to the technical field of underground space and underground passage construction, and particularly relates to a construction method for efficiently dismantling an outer wall of a low-disturbance basement communication port.
Background
With the acceleration of urbanization process, the construction of urban underground engineering is becoming more common and increasing. In the underground passage construction, the wall body of the communication opening is dismantled to provide a reliable working surface for the next procedure. Research and analysis are carried out on the construction scheme for dismantling the outer wall of the communication port of the basement on site, and the result shows that the overall cutting weight is large, the transportation is not suitable, and the danger is easy to occur. If according to the traditional construction method for breaking the air pick, the violent vibration generated during breaking the air pick not only can damage the broken section, but also can affect the surrounding structure to cause damage, thereby having certain potential safety hazard.
Disclosure of Invention
The invention aims to solve the problems that the fracture surface is damaged and the surrounding structure is endangered due to severe vibration generated by a traditional pneumatic pick crushing construction method, and adopts a low-disturbance dismantling method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method for efficiently dismantling an outer wall of a low-disturbance basement communication port comprises the following steps:
step one, operation preparation and measurement paying-off: cleaning a field, defining the surrounding environment of a construction site, discharging an upper dismantling control retreating line at a certain distance below an outer wall connecting beam, discharging a left dismantling control retreating line and a right dismantling control retreating line at a certain distance of an outer wall body within the range of a communication port, and taking the ground as a lower dismantling control retreating line;
respectively drawing a plurality of water drill drilling central points below an upper dismantling control retreating line and above a lower dismantling control retreating line to determine water drill drilling hole positions, ensuring that a water drill drilling machine has a basic working space, and drawing vertical block cutting lines in the wall body within the range of a communication opening, namely the middle part of the wall body to be dismantled;
step two, installing a steel plate fixing clamping seat: the steel plate fixing clamping seat is divided into a horizontal type and a vertical type, bolts are adopted for anchoring and mounting, and the mounting position is tightly attached to the outer wall surface in the range of the communicating port;
the horizontal steel plate fixing clamping seat is arranged on the inner side of the wall body to be dismantled, and the vertical steel plate fixing clamping seat is arranged on the outer side of the wall body to be dismantled;
step three, cutting by a wire saw: positioning and releasing two cutting guide lines on the outer side surface of the wall body to be dismantled, dividing the wall surface into two parts by the two cutting guide lines and the block cutting lines, and drilling cutting holes which penetrate through the wall body at equal intervals on the cutting guide lines and the block cutting lines by using a water drilling machine;
the rope saw is placed on the lifting operation platform, the construction surface is divided into a plurality of sections according to the heights of the block cutting lines and the cutting guide lines, the sections are sequentially from top to bottom, the rope saw chain is overlapped with the block cutting lines and the cutting guide lines to cut, the rope saw is stopped and adjusted immediately when abnormal conditions such as deviation of the rope saw exist in the cutting process, and the cutting wall body is guaranteed not to exceed the removal control line withdrawal;
step four, drilling by a rhinestone: after the rope saw finishes cutting, inserting the horizontal high-strength steel template into a horizontal steel plate fixing clamping seat, anchoring by using a fixing bolt, and then respectively forming three through holes in the middle part and the geometric center of 1/3 below the two parts of the wall body;
the water drilling machine is placed on the lifting operation platform, the construction of a water drilling position of a row of water drills below the outer wall connecting beam is firstly carried out, a hole penetrating through the wall body is sequentially drilled from left to right at the center point of the drilled hole, a second round of drilling from right to left is started to the right end, and two visible wave seams with full length are formed until the upper side;
inserting the vertical high-strength template into the vertical steel plate fixing clamping seat for mounting and fixing, and then performing hole drilling construction on a lower side water drill;
reserving 8-10 concrete blocks in a bottom hole after two-round drilling, and uniformly supporting a three-edge free wall body to be dismantled;
step five, hoisting the wall blocks: and (3) penetrating a hoisting chain into the hoisting hole, extending to the outer side of the wall body to be dismantled, pre-tensioning and dragging a pre-prepared crane to enable the first wall body to be dismantled on the left side or the right side to obviously move, then starting to hoist in blocks by taking the lower part of the vertical high-strength template as a fulcrum, transferring the wall body outside the area, and if the wall body is used for ensuring the integrity, adjusting the position of a through hole of the hoisting chain to a balance hoisting hole so as to stably hoist.
Preferably, the upper dismantling control retreating line is located at a position 50mm-100mm below the outer wall connecting beam, and the left dismantling control retreating line is located at a position 40mm-60mm away from the outer wall body within the range of the communicating port.
Preferably, the diameter of the water drill hole is 60mm-80mm, the hole spacing is 100mm-120mm, and the drill hole is close to the dismounting control retreating line.
Furthermore, the length of the horizontal steel plate fixing clamping seats is 400-600 mm, the number of the horizontal steel plate fixing clamping seats is four, every two horizontal steel plate fixing clamping seats are respectively located at 1/5 and 4/5 positions of the height of a wall to be dismantled, every two horizontal steel plate fixing clamping seats are horizontally aligned, and the horizontal steel plate fixing clamping seats are installed on the inner side of the wall and located on the outer wall in the range of the communication port.
Furthermore, the length of the vertical steel plate fixing clamping seat ranges from 250mm to 400mm, two vertical steel plate fixing clamping seats are respectively arranged at 1/5 and 4/5 of the width of the wall to be dismantled, and the vertical steel plate fixing clamping seats are installed on the outer side of the wall and are arranged on the outer wall connecting beam.
The invention has the beneficial effects that:
1. compared with the traditional construction process, the invention not only reduces the disturbance to the upper structure and greatly reduces the construction noise, but also has no dust pollution by occluding and drilling the wall body and positioning, cutting and dismantling the wall body in blocks.
2. The high-strength formwork is adopted to fix the wall, so that the construction working face is reduced, the construction efficiency is effectively improved, and the safety risk of construction operators is reduced.
3. The method can accurately control the outer wall dismantling range, ensure that the adjacent structure part is not damaged, facilitate the integral hoisting of the cutting block, effectively reduce the construction cost and accelerate the construction progress.
4. The invention utilizes the rope saw to cut in blocks, the hanging chain to hoist, the wall body after being dismantled is roughly complete, and the wall body can be reused or the building materials can be recycled. The aim and the requirement of saving and utilizing building materials and protecting the environment are fulfilled, and a modern green resource-saving building environment is created.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the operation of the inner side of a wall
FIG. 2 is a schematic view of the inside of a wall
FIG. 3 is a schematic view of a wall-dismantling holder
FIG. 4 is a schematic diagram of the handling of the demolished partition
In the figure: the control line that moves back is demolishd to 1, 2 piecemeal lines of cut, 3 cutting guide lines, 4 cutting holes, 5 water bores the hole site, 6 lifting eyes, 7 balanced lifting eyes, 8 fixed cassettes of steel sheet, 9 horizontal high strength steel form, 10 vertical high strength steel form, 11 outer wall are roof beam even, 12 basement outer walls, 13 fixing bolt.
Detailed Description
Example (b):
referring to the attached drawings 1-4, a low-disturbance basement communication port outer wall efficient dismantling construction method comprises the following steps:
step one, operation preparation and measurement paying-off: the method comprises the steps of cleaning a field, determining the surrounding environment of a construction site, confirming the range of a communication port to be disassembled from a wall body, emitting an upper disassembly control retreating line at a certain distance below an outer wall coupling beam, wherein the upper disassembly control retreating line is located at 50-100 mm below the outer wall coupling beam, then emitting a left disassembly control retreating line and a right disassembly control retreating line at a certain distance below the outer wall coupling beam, wherein the left disassembly control retreating line and the right disassembly control retreating line are located at 40-60 mm of the outer wall body within the range of the communication port, and the outer wall body within the range of the communication port, namely a basement outer wall, is a wall body which does not. Then, the horizontal plane on the ground is used as a lower dismantling control retreating line, the range of the wall body to be dismantled is determined by setting the upper, lower and left dismantling control retreating lines, and the condition that the range is exceeded during dismantling is avoided.
A plurality of water drill drilling center points are respectively drawn below an upper dismantling control retreating line and the lower portion of a wall body to be dismantled to determine water drill drilling hole positions, the water drill drilling ensures that the edges of water drill drilling holes are close to the upper dismantling control retreating line and the lower dismantling control retreating line, all the water drill drilling holes are sequentially ensured to be located on the same straight line and not exceed the range, meanwhile, the water drill drilling machine is ensured to have a basic working space, and the wall body is to be dismantled in the range of a communication port, namely, vertical block cutting lines are drawn in the middle of the wall body to be dismantled.
Step two, installing a steel plate fixing clamping seat: the steel plate fixing clamping seat is divided into a horizontal type and a vertical type, bolts are adopted for anchoring and mounting, and the mounting position is tightly attached to the outer wall surface in the range of the communicating port; the horizontal steel plate fixing clamping seats are four in number, every two steel plate fixing clamping seats are in a group, vertical elevation control is adopted, the steel plate fixing clamping seats are respectively located at 1/5 and 4/5 positions of the height of a wall to be dismantled, two-two horizontal alignment is guaranteed, the steel plate fixing clamping seats are installed on the inner side of the wall, and the steel plate fixing clamping seats are located on the outer wall in the range of a communication port. The vertical steel plate fixing clamping seats are arranged at 1/5 and 4/5 positions of the width of the wall to be dismantled respectively, are installed on the outer side of the wall and are located on the outer wall connecting beam. The installation part of the steel plate fixing clamping seat is tightly attached to the wall surface, so that the structural wall body damage and the high-strength steel template deformation caused by uneven pressure generated during the wall body dismantling operation are prevented.
Step three, cutting by a wire saw: the step is outer side construction, two cutting guide lines are positioned and released on the outer side surface of the wall body to be dismantled, and the two cutting guide lines are respectively positioned on the inner sides of the left dismantling control retreating line and the right dismantling control retreating line and are parallel to the left dismantling control retreating line and the right dismantling control retreating line. The two cutting guide lines and the partitioning cutting lines divide the wall surface into two parts. And (3) drilling 5 holes which penetrate through the wall body at equal intervals on the cutting guide line and the block cutting line respectively by using a water drilling machine with the drill bit aperture of 40-50 mm.
The rope saw is placed on the lifting operation platform, the construction surface is divided into 4 sections according to the height of the block cutting line and the cutting guide line, the sequence is from top to bottom, the rope saw chain, the block cutting line and the cutting guide line are overlapped for cutting, abnormal conditions such as rope saw deviation exist in the cutting process, the rope saw needs to be stopped and adjusted immediately, and the cutting wall body is guaranteed not to exceed the removal control line withdrawal.
Step four, drilling by a rhinestone: the step is inner side construction, the inner side surface of a wall body is to be dismantled, after the rope saw cuts, the horizontal high-strength steel template is inserted into the horizontal steel plate fixing clamping seat and is anchored by using a fixing bolt, wherein two ends of the horizontal high-strength steel template are inserted into the horizontal steel plate fixing clamping seat, and the end part of the horizontal high-strength steel template is fixed on an underground outdoor wall through the fixing bolt. Then, three through holes are respectively formed in the middle and the geometric center of the lower part 1/3 of the two-part wall body, preferably the three through holes are distributed in a triangular shape, two holes in the bottom are used as lifting holes for inserting the lifting zipper chains, and holes in the upper part are used as balance lifting holes.
The water drilling machine is placed on the lifting operation platform, the construction of a water drilling position of a row of water drills below the outer wall connecting beam is firstly carried out, a hole penetrating through the wall body is sequentially drilled from left to right at the center point of the drilled hole, a second round of drilling from right to left is started to the right end, and two visible wave seams with full length are formed until the upper side;
and inserting the vertical high-strength template into the vertical steel plate fixing clamping seat, fixing the upper end of the vertical high-strength template on the outer wall connecting beam by using a fixing bolt, fixing the lower end of the vertical high-strength template, taking the lower part of the vertical high-strength template at the upper part of the horizontal high-strength steel template as a fulcrum, and then performing the construction of the hole site of the lower side water drill in the same way as the upper part.
8-10 concrete blocks (as black parts are filled in the figure 1) are reserved in the bottom hole after two-wheel drilling, and the three-edge free wall to be dismantled is uniformly supported. The meshed water drill holes are drilled at intervals by water drills, one round of the water drill holes are drilled at intervals from left to right (or from right to left), and the other round of the water drill holes are drilled at intervals from right to left (or from left to right).
Step five, hoisting the wall blocks: and (2) penetrating a hoisting chain into the hoisting hole, extending to the outer side of the wall body to be dismantled, pre-tensioning and dragging a pre-prepared crane to enable the first wall body to be dismantled on the left side to obviously move, wherein the obvious movement means that the hole site on the lower part of the wall body block generates 3cm-5cm relative displacement, certainly starting from the right side, then starting to lift in blocks by taking the lower part of the vertical high-strength template as a fulcrum, transferring the blocks to the outside of the area for treatment, and if the hoisting chain is used for special purposes to ensure the integrity, adjusting the position of a perforation to a balanced hoisting hole to stably lift the blocks.
Claims (5)
1. A construction method for efficiently dismantling an outer wall of a low-disturbance basement communication port is characterized by comprising the following steps:
step one, operation preparation and measurement paying-off: cleaning a field, defining the surrounding environment of a construction site, discharging an upper dismantling control retreating line at a certain distance below an outer wall connecting beam, discharging a left dismantling control retreating line and a right dismantling control retreating line at a certain distance of an outer wall body within the range of a communication port, and taking the ground as a lower dismantling control retreating line;
respectively drawing a plurality of water drill drilling central points below an upper dismantling control retreating line and above a lower dismantling control retreating line to determine water drill drilling hole positions, ensuring that a water drill drilling machine has a basic working space, and drawing vertical block cutting lines in the wall body within the range of a communication opening, namely the middle part of the wall body to be dismantled;
step two, installing a steel plate fixing clamping seat: the steel plate fixing clamping seat is divided into a horizontal type and a vertical type, bolts are adopted for anchoring and mounting, and the mounting position is tightly attached to the outer wall surface in the range of the communicating port;
the horizontal steel plate fixing clamping seat is arranged on the inner side of the wall body to be dismantled, and the vertical steel plate fixing clamping seat is arranged on the outer side of the wall body to be dismantled;
step three, cutting by a wire saw: positioning and releasing two cutting guide lines on the outer side surface of the wall body to be dismantled, dividing the wall surface into two parts by the two cutting guide lines and the block cutting lines, and drilling cutting holes which penetrate through the wall body at equal intervals on the cutting guide lines and the block cutting lines by using a water drilling machine;
the rope saw is placed on the lifting operation platform, the construction surface is divided into a plurality of sections according to the heights of the block cutting lines and the cutting guide lines, the sections are sequentially from top to bottom, the rope saw chain is overlapped with the block cutting lines and the cutting guide lines to cut, the rope saw is stopped and adjusted immediately when abnormal conditions such as deviation of the rope saw exist in the cutting process, and the cutting wall body is guaranteed not to exceed the removal control line withdrawal;
step four, drilling by a rhinestone: after the rope saw finishes cutting, inserting the horizontal high-strength steel template into a horizontal steel plate fixing clamping seat, anchoring by using a fixing bolt, and then respectively forming three through holes in the middle part and the geometric center of 1/3 below the two parts of the wall body;
the water drilling machine is placed on the lifting operation platform, the construction of a water drilling position of a row of water drills below the outer wall connecting beam is firstly carried out, a hole penetrating through the wall body is sequentially drilled from left to right at the center point of the drilled hole, a second round of drilling from right to left is started to the right end, and two visible wave seams with full length are formed until the upper side;
inserting the vertical high-strength template into the vertical steel plate fixing clamping seat for mounting and fixing, and then performing hole drilling construction on a lower side water drill;
reserving 8-10 concrete blocks in a bottom hole after two-round drilling, and uniformly supporting a three-edge free wall body to be dismantled;
step five, hoisting the wall blocks: and (3) penetrating a hoisting chain into the hoisting hole, extending to the outer side of the wall body to be dismantled, pre-tensioning and dragging a pre-prepared crane to enable the first wall body to be dismantled on the left side or the right side to obviously move, then starting to hoist in blocks by taking the lower part of the vertical high-strength template as a fulcrum, transferring the wall body outside the area, and if the wall body is used for ensuring the integrity, adjusting the position of a through hole of the hoisting chain to a balance hoisting hole so as to stably hoist.
2. The efficient dismantling construction method for the outer wall of the low-disturbance basement communication port as claimed in claim 1, wherein the upper dismantling control retreat line is located 50mm-100mm below the outer wall connecting beam, and the left dismantling control retreat line is located 40mm-60mm away from the outer wall body in the communication port range.
3. The efficient dismantling construction method for the outer wall of the communication opening of the low-disturbance basement as claimed in claim 1, wherein the aperture of the water drill drilling hole is 60mm-80mm, the hole spacing is 100mm-120mm, and the drilling hole is close to a dismantling control retreating line.
4. The efficient dismantling construction method for the outer wall of the communication opening of the low-disturbance basement as claimed in claim 1, wherein the length of the horizontal steel plate fixing clamping seats is 400mm-600mm, four are provided, and each two horizontal steel plate fixing clamping seats are respectively located at 1/5 and 4/5 of the height of the wall to be dismantled, are horizontally aligned in pairs, are installed on the inner side of the wall, and are located on the outer wall in the range of the communication opening.
5. The efficient dismantling construction method for the outer wall of the communication opening of the low-disturbance basement as claimed in claim 1, wherein the length of the vertical steel plate fixing clamping seat is 250mm-400mm, two of the vertical steel plate fixing clamping seats are respectively located at 1/5 and 4/5 of the width of the wall to be dismantled, the vertical steel plate fixing clamping seats are installed on the outer side of the wall, and the vertical steel plate fixing clamping seats are located on the outer wall connecting beam.
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Cited By (5)
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| CN112832553A (en) * | 2021-01-06 | 2021-05-25 | 中建三局集团有限公司 | Static cutting and dismantling method for diaphragm wall clinging to outer wall of underground structure |
| CN112963000A (en) * | 2021-02-04 | 2021-06-15 | 北京城建集团有限责任公司 | Reinforcing design and construction method for opening hole behind autoclaved aerated concrete batten |
| CN114922463A (en) * | 2022-05-27 | 2022-08-19 | 中建二局第三建筑工程有限公司 | Vibration-free cantilever plate block dismantling construction method |
| CN115030559A (en) * | 2022-05-24 | 2022-09-09 | 四川农业大学 | Method for dismantling cast-in-situ concrete beam slab column of constructed building |
| JP7398026B1 (en) | 2023-09-11 | 2023-12-13 | 鹿島建設株式会社 | How to remove the skeleton |
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Cited By (6)
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| JP7398026B1 (en) | 2023-09-11 | 2023-12-13 | 鹿島建設株式会社 | How to remove the skeleton |
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Application publication date: 20200710 |