CN210857184U - Pier type foundation reinforcing structure - Google Patents
Pier type foundation reinforcing structure Download PDFInfo
- Publication number
- CN210857184U CN210857184U CN201921464642.1U CN201921464642U CN210857184U CN 210857184 U CN210857184 U CN 210857184U CN 201921464642 U CN201921464642 U CN 201921464642U CN 210857184 U CN210857184 U CN 210857184U
- Authority
- CN
- China
- Prior art keywords
- grouting
- pier foundation
- direct
- pier
- insert
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 19
- 238000003780 insertion Methods 0.000 claims abstract description 58
- 238000007569 slipcasting Methods 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000002787 reinforcement Effects 0.000 claims abstract description 28
- 238000005728 strengthening Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 abstract description 14
- 230000009977 dual effect Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 31
- 239000002002 slurry Substances 0.000 description 10
- 238000005553 drilling Methods 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- 239000011440 grout Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- XQRLCLUYWUNEEH-UHFFFAOYSA-N diphosphonic acid Chemical compound OP(=O)OP(O)=O XQRLCLUYWUNEEH-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a pier foundation reinforcing structure, which comprises a direct-inserting type grouting reinforcing mechanism which is vertically arranged outside a pier foundation and is contacted with the outer edge of the pier foundation and an inclined-inserting type grouting reinforcing mechanism which is obliquely arranged outside the pier foundation and is contacted with the outer edge of the bottom of the pier foundation, wherein the direct-inserting type grouting reinforcing mechanism is inserted into the inner side of the inclined-inserting type grouting reinforcing mechanism; the direct-insertion type grouting reinforcement mechanism comprises a plurality of direct-insertion type grouting pipes which are uniformly distributed along the circumferential direction of the pier-type foundation; the oblique-insertion type grouting reinforcement mechanism comprises a plurality of oblique-insertion type grouting pipes which are uniformly distributed along the circumferential direction of the pier-type foundation, and the oblique-insertion type grouting pipes are located in the region between two adjacent direct-insertion type grouting pipes. The utility model discloses a cut straightly formula slip casting strengthening mechanism and insert formula slip casting strengthening mechanism to one side and play the effect of shore to pier-type basis, form the solid below on pier-type basis, play the effect of dual support to pier-type basis, further improved the bearing capacity on pier-type basis.
Description
Technical Field
The utility model belongs to the technical field of the building foundation, especially, relate to a pier foundation reinforced structure.
Background
In the building construction, because the base area of the pier foundation structure is calculated according to the design method of a natural foundation, a single-pier load test is omitted, and the pier foundation structure is popular under the condition of short construction period, the pier foundation structure is a short thick deep foundation formed by drilling or punching holes in the foundation and pouring concrete, and the depth of the pier foundation structure is usually 3-6 m. However, since the pier foundation is generally buried shallowly, the pier foundation sinks and the bearing capacity is reduced due to water intrusion during use, which affects the safety of the upper components and destroys the stability of the building. Therefore, in order to ensure that the pier foundation reduces the influence on the upper member during use, the pier foundation needs to be reinforced comprehensively.
Disclosure of Invention
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a pier foundation reinforced structure, through cut straightly formula slip casting reinforcing mechanism with the effect that formula slip casting reinforcing mechanism played the shore to pier foundation to one side has improved pier foundation's bearing capacity, combines cut straightly formula slip casting pipe and formula slip casting pipe to one side to form the reinforcement body in pier foundation's below again, fills the cavity in the pier foundation below concrete, can play the sealed effect of stagnant water, the accessible is to pier foundation below concrete's reinforcement again, plays the effect of dual bracing to pier foundation, has further improved pier foundation's bearing capacity.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a pier foundation reinforced structure which characterized in that: the system comprises a direct-insertion type grouting reinforcement mechanism which is vertically arranged on the outer side of a pier foundation and is in contact with the outer edge of the pier foundation and an oblique-insertion type grouting reinforcement mechanism which is obliquely arranged on the outer side of the pier foundation and is in contact with the outer edge of the bottom of the pier foundation, wherein the direct-insertion type grouting reinforcement mechanism is inserted into the inner side of the oblique-insertion type grouting reinforcement mechanism;
the direct-insertion type grouting reinforcement mechanism comprises a plurality of direct-insertion type grouting pipes which are uniformly distributed along the circumferential direction of the pier foundation, one end of each direct-insertion type grouting pipe is tightly attached to the outer edge of the pier foundation from top to bottom and is inserted below the pier foundation, the other end of each direct-insertion type grouting pipe extends out of the ground, a first grouting valve is installed at one end, located on the lower side of the pier foundation, of each direct-insertion type grouting pipe, and a first check valve is installed on a pipe section, located on the upper side of the first grouting valve and close to the lower side of the pier foundation, of each direct-insertion type grouting pipe;
the oblique-insertion type grouting reinforcement mechanism comprises a plurality of oblique-insertion type grouting pipes which are uniformly distributed along the circumferential direction of the pier-type foundation, one ends of the oblique-insertion type grouting pipes are obliquely inserted into the bottom of the pier-type foundation from top to bottom, the other ends of the oblique-insertion type grouting pipes stretch out of the ground, the oblique-insertion type grouting pipes are located at one ends of the bottom of the pier-type foundation and provided with second grouting valves, second one-way valves are arranged on pipe sections which are located on the upper sides of the second grouting valves and close to the bottom of the pier-type foundation on the oblique-insertion type grouting pipes, and the oblique-insertion type grouting pipes are located in regions between every two adjacent direct-insertion type grouting pipes.
The pier foundation reinforcing structure is characterized in that the included angle between the central axis of the inclined-insertion grouting pipe in the length direction and the central axis of the straight-insertion grouting pipe in the length direction is α, and the value range of α is 20-30 degrees.
Foretell pier footing reinforced structure, its characterized in that: the first grouting valve and the second grouting valve are sleeve valves.
Foretell pier footing reinforced structure, its characterized in that: and one end of the grouting pipe extending out of the ground is communicated with a high-pressure grouting pump through a grouting hose.
Foretell pier footing reinforced structure, its characterized in that: the number of the direct-insert grouting pipes is equal to that of the inclined-insert grouting pipes, the number of the direct-insert grouting pipes is 12-20, the inner diameters of the direct-insert grouting pipes and the inclined-insert grouting pipes are 20-30 mm, the distance between the centers of two adjacent direct-insert grouting pipes is 200-500 mm, and the distance between the centers of two adjacent inclined-insert grouting pipes is 200-500 mm.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a vertical setting in the pier foundation outside and with the formula of pier foundation outward flange contact cut straightly formula slip casting strengthening mechanism, utilize a plurality of even lays and one end from top to bottom hugs closely the outer flange on pier foundation and insert the formula of pier foundation below cut straightly formula slip casting pipe along pier foundation circumference direction, press from both sides tight pier foundation, improve pier foundation and frictional force all around, utilize cut straightly formula slip casting pipe to carry out the slip casting in pier foundation's below simultaneously, the solidification of the soil body of realization below pier foundation effectively improves the bearing capacity on pier foundation.
2. The utility model discloses a slant setting in the pier foundation outside and with the oblique formula slip casting strengthening mechanism of the contact of pier foundation bottom outward flange, combine to alternate the formula of inserting slip casting strengthening mechanism outside to one side formula slip casting strengthening mechanism cut straightly formula slip casting strengthening mechanism plays the shore effect to pier foundation, utilizes the formula slip casting pipe of inserting to one side to carry out the slip casting to pier foundation's bottom simultaneously, plays the auxiliary action for the slip casting of formula slip casting pipe to pier foundation below soil body to cut straightly formula.
3. The utility model discloses in cut straightly formula slip casting strengthening mechanism with formula slip casting strengthening mechanism to one side plays the effect of shore to pier foundation, has improved pier foundation's bearing capacity, combines cut straightly formula slip casting pipe and formula slip casting pipe to one side to form the reinforcement body below pier foundation again, fills the cavity in the pier foundation below concrete, can play the sealed effect of stagnant water, and the accessible is to the reinforcement of pier foundation below concrete again, plays dual support's effect to pier foundation, has further improved pier foundation's bearing capacity.
To sum up, the utility model discloses a cut straightly formula slip casting strengthening mechanism with insert formula slip casting strengthening mechanism to one side plays the effect of shore to pier-type basis, has improved pier-type basic bearing capacity, combines to cut straightly formula slip casting pipe and insert formula slip casting pipe to one side again and forms the reinforcement body in pier-type basic below, fills the cavity in the pier-type basis below concrete, can play the sealed effect of stagnant water, and the accessible plays dual support's effect to the reinforcement of pier-type basis below concrete again, has further improved pier-type basic bearing capacity.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
And
drawings
Fig. 1 is a schematic diagram of the position relationship between the pier foundation, the direct-insert grouting pipe and the inclined-insert grouting pipe of the present invention.
Fig. 2 is the utility model discloses well formula slip casting strengthening mechanism and formula slip casting strengthening mechanism inserts formula slip casting strengthening mechanism on pier foundation position relation schematic diagram all around to one side.
Fig. 3 is a schematic structural view of the structure of the present invention in which a reinforcing body is formed.
Description of reference numerals:
1-pier foundation; 2, a direct-insert grouting pipe; 3-inserting grouting pipe obliquely;
4, the ground; 5-a first grouting valve; 5-1 — a first grouting hole;
6-second grouting valve; 6-1-second grouting hole; 7, supporting piers;
8-a first one-way valve; 9-a second one-way valve; 10-grouting flexible pipe;
11-high pressure grouting pump; 12-reinforcing body.
Detailed Description
As shown in fig. 1 and 2, the pier foundation reinforcing structure includes a direct-insert grouting reinforcing mechanism vertically arranged outside the pier foundation 1 and contacting with the outer edge of the pier foundation 1, and an oblique-insert grouting reinforcing mechanism obliquely arranged outside the pier foundation 1 and contacting with the outer edge of the bottom of the pier foundation 1, wherein the direct-insert grouting reinforcing mechanism is inserted into the inner side of the oblique-insert grouting reinforcing mechanism;
the direct-insertion type grouting reinforcement mechanism comprises a plurality of direct-insertion type grouting pipes 2 which are uniformly distributed along the circumferential direction of a pier foundation 1, one end of each direct-insertion type grouting pipe 2 is tightly attached to the outer edge of the pier foundation 1 from top to bottom and inserted below the pier foundation 1, the other end of each direct-insertion type grouting pipe 2 extends out of the ground 4, a first grouting valve 5 is installed at one end, located on the lower side of the pier foundation 1, of each direct-insertion type grouting pipe 2, and a first check valve 8 is installed on a pipe section, located on the upper side of the first grouting valve 5 and close to the lower side of the pier foundation 1, of each direct-insertion type grouting pipe 2;
the oblique-insertion type grouting reinforcement mechanism comprises a plurality of oblique-insertion type grouting pipes 3 uniformly distributed along the circumferential direction of the pier foundation 1, one ends of the oblique-insertion type grouting pipes 3 are obliquely inserted into the bottom of the pier foundation 1 from top to bottom, the other ends of the oblique-insertion type grouting pipes 3 extend out of the ground 4, the oblique-insertion type grouting pipes 3 are located at one ends of the bottom of the pier foundation 1, a second grouting valve 6 is installed at one end of the bottom of the pier foundation 1, a second one-way valve 9 is installed on a pipe section, located on the upper side of the second grouting valve 6, close to the bottom of the pier foundation 1 on the oblique-insertion type grouting pipes 3, and the oblique-insertion type grouting pipes 3 are located in an area between every two adjacent direct-insertion type grouting pipes 2.
During the in-service use, in order to effectively exert the supporting role of supporting pier 7, guarantee pier foundation 1 to support the bearing effect of pier 7, set up this pier foundation reinforced structure around pier foundation 1, supplementary pier foundation 1 supports and improves pier foundation 1's bearing capacity supporting pier 7. The number of the in-line grouting pipes 2 and the obliquely inserted grouting pipes 3 and the grouting amount of concrete below the pier foundation 1 can be set according to the requirements of the stratum and the bearing capacity, and the in-line grouting pipes 2 and the obliquely inserted grouting pipes 3 can be embedded in a drilling mode according to the stratum condition.
Through vertical setting in the 1 outside of pier foundation and with the formula of pier foundation 1 outward flange contact's formula slip casting strengthening mechanism that cut straightly, utilize a plurality of 1 circumference directions along pier foundation evenly lay and one end from top to bottom hugs closely the formula of pier foundation 1's outward flange and insert to the formula of pier foundation 1 below formula of cut straightly slip casting pipe 2, press from both sides tight pier foundation 1, improve pier foundation 1 and frictional force all around, utilize formula of cut straightly slip casting pipe 2 to carry out the slip casting in pier foundation 1's below simultaneously, the solidification of the soil body of the formula of pier foundation 1 below is realized, effectively improve pier foundation 1's bearing capacity.
Through the slant setting in the pier foundation 1 outside and with the oblique formula slip casting strengthening mechanism of the contact of 1 bottom outward flange of pier foundation, combine to alternate in the oblique formula slip casting strengthening mechanism outside cut straightly formula slip casting strengthening mechanism plays the shore effect to pier foundation 1, utilizes oblique formula slip casting pipe 3 to carry out the slip casting to the bottom of pier foundation 1 simultaneously, plays the auxiliary action for the slip casting of the formula slip casting pipe 2 to the soil body below pier foundation 1 that cuts straightly. In addition, the direct-insert type grouting reinforcement mechanism and the inclined-insert type grouting reinforcement mechanism have the function of jacking the pier foundation 1, so that the bearing capacity of the pier foundation 1 is improved, and the direct-insert type grouting pipe 2 and the inclined-insert type grouting pipe 3 are combined to form the reinforcement body 12 below the pier foundation 1, so that a cavity in concrete below the pier foundation 1 is filled, the water-stopping sealing function is achieved, the concrete below the pier foundation 1 can be reinforced, the double-support function is achieved for the pier foundation 1, and the bearing capacity of the pier foundation 1 is further improved.
As shown in fig. 1 and 3, a plurality of first grouting holes 5-1 are formed in the first grouting valve 5, and a plurality of second grouting holes 6-1 are formed in the second grouting valve 6, so that cement slurry can be conveniently injected into the soil body below the pier foundation 1.
In this embodiment, an included angle between the central axis of the obliquely inserted grouting pipe 3 in the length direction and the central axis of the directly inserted grouting pipe 2 in the length direction is α, and the value range of α is 20 ° to 30 °.
During actual use, the included angle between the central axis of the inclined-insertion type grouting pipe 3 in the length direction and the central axis of the straight-insertion type grouting pipe 2 in the length direction is maintained within the range of 20-30 degrees, so that the waste of resources caused by the overlong pipe length of the inclined-insertion type grouting pipe 3 is avoided.
In this embodiment, the first grouting valve 5 and the second grouting valve 6 are both sleeve valves. The first check valve 8 and the second check valve 9 are preferably DXF6-G check valves.
In this embodiment, the end of the grouting pipe extending out of the ground 4 is communicated with a high-pressure grouting pump 11 through a grouting hose 10.
During actual use, grout in the grouting pump is injected below the pier foundation 1 through the grouting hose, and the reinforcing body 12 which plays a supporting and water stopping role in the pier foundation 1 is formed through high-pressure grouting.
In this embodiment, the number of the direct-insert grouting pipes 2 is equal to that of the obliquely-inserted grouting pipes 3, the number of the direct-insert grouting pipes 3 is 12-20, the inner diameters of the direct-insert grouting pipes 2 and the obliquely-inserted grouting pipes 3 are 20-30 mm, the distance between the centers of two adjacent direct-insert grouting pipes 2 is 200-500 mm, and the distance between the centers of two adjacent obliquely-inserted grouting pipes 3 is 200-500 mm.
The utility model discloses during the use, at first need confirm the quantity of formula slip casting pipe and the formula slip casting pipe of inserting to one side: according to the formula
Determining the number n of the straight-inserting grouting pipes (2) and the inclined-inserting grouting pipes (3) on one edge of the pier foundation (1), wherein the longitudinal section of the pier foundation (1) is rectangular, L is the length of the rectangle, and Delta L is the length interval threshold value between the centers of two adjacent grouting pipes (2) on the same edge, or the length interval threshold value between the centers of two adjacent inclined-inserting grouting pipes (3) on the same edge, the value range of Delta L is 200-500 mm [. ]]Is a rounding function; according to the formula
Determining a horizontal distance l between a central point of the obliquely inserted grouting pipe, which leaks out of the ground, and the outer edge of the pier foundation (1), wherein h is the embedding depth of the pier foundation (1), D is the outer diameter of the directly-inserted grouting pipe (2), and α is an included angle between a central axis of the obliquely inserted grouting pipe (3) in the length direction and a central axis of the directly-inserted grouting pipe (2) in the length direction;
after the installation of the utility model is confirmed, 4n first drill holes are vertically drilled on the position of the ground 4, which is positioned at the outer edge of the pier foundation 1, the 4n first drill holes are uniformly distributed around the pier foundation 1, the depths of the 4n first drill holes are the same, the depths of the 4n first drill holes are 800 mm-3000 mm deeper than the embedding depth of the pier foundation 1, the first drill holes are cylindrical drill holes, and the aperture of the first drill holes is 80 mm-100 mm;
4n second drill holes are drilled obliquely at a position which is l away from the outer edge of the pier foundation 1 on the ground 4, the 4n second drill holes are uniformly distributed around the pier foundation 1, the depth of the 4n second drill holes is the same, the depth of the 4n second drill holes is 800-1000 mm deeper than the embedding depth of the pier foundation 1, the second drill holes are cylindrical and the aperture of the second drill holes is 80-100 mm;
a direct-insert grouting pipe 2 is placed in each first drilling hole, a first grouting valve 5 is installed at one end, to be placed to the bottom of the first drilling hole, of the direct-insert grouting pipe 2 before the direct-insert grouting pipe 2 is placed, and a first check valve 8 is installed on a pipe section, close to the lower side of the pier foundation 1, on the upper side of the first grouting valve 5; when the drilling tool is used practically, the direct-insertion type grouting pipe 2 can be directly driven into the outer edge of the pier foundation 1, and when the driving is difficult, the first drilling hole can be drilled and then the direct-insertion type grouting pipe 2 can be placed into the drilling tool; meanwhile, the obliquely inserted grouting pipe 3 can be directly driven into the ground 4 with a distance of l from the outer edge of the pier foundation 1, and when the driving is difficult, the second drill hole can be drilled and then the obliquely inserted grouting pipe 3 can be placed into the second drill hole.
An oblique-insertion type grouting pipe 3 is lowered in each second drilling hole, a second grouting valve 6 is installed at one end, which is to be lowered to the bottom of the second drilling hole, of the oblique-insertion type grouting pipe 3 before the oblique-insertion type grouting pipe 3 is lowered, and a second check valve 9 is installed on a pipe section, which is close to the bottom of the pier foundation 1, on the upper side of the second grouting valve 6;
sealing the periphery of each direct-insert grouting pipe 2 and each inclined-insert grouting pipe 3 extending out of the ground 4 by adopting a sealant; in actual use, in order to prevent cement slurry from flowing out of the grouting pipe during grouting, the periphery of the grouting pipe extending out of the ground 4 needs to be sealed by using a sealant.
After the sealant for plugging each in-line grouting pipe 2 and each inclined-insertion grouting pipe 3 is solidified, one end of each in-line grouting pipe 2, which extends out of the ground 4, is communicated with a high-pressure grouting pump 11 through a grouting hose 10, and cement slurry is injected into the lower part of the pier foundation 1 through the grouting hose 10 through a first grouting valve 5; one end of the inclined-insertion type grouting pipe 3 extending out of the ground 4 is communicated with a high-pressure grouting pump 11 through a grouting hose 10, and cement slurry is injected into the lower portion of the pier foundation 1 through the grouting hose 10 through a second grouting valve 6; the cement paste permeates into the holes in the soil below the pier foundation 1 under pressure, forcibly extrudes to the peripheral area of the grouting point to form spherical grout bubbles, and the grout bubbles extrude the peripheral soil body, namely compact soil body, so as to supplement the strength of the soil body in the peripheral area of the grouting point;
when the amount of cement grout injected into the lower part of the pier foundation 1 by the grouting hose 10 of each direct-insertion grouting pipe 2 through the first grouting valve 5 is greater than a cement grout amount threshold value or the grouting pressure in each direct-insertion grouting pipe 2 is greater than a grouting pressure threshold value or the ground 4 reverse grouting amount, ending high-pressure grouting, closing the high-pressure grouting pump 11, detaching the grouting hose 10, and plugging the direct-insertion grouting pipes 2 by plugs; otherwise, continuing to perform high-pressure grouting; when the amount of cement grout injected into the lower part of the pier foundation 1 by each inclined-insertion grouting pipe 3 through the second grouting valve 6 is larger than the cement grout amount threshold or the grouting pressure in each inclined-insertion grouting pipe 3 is larger than the grouting pressure threshold or the ground 4 backscattering amount, ending the high-pressure grouting, closing the high-pressure grouting pump 11, detaching the grouting hose 10, and plugging the inclined-insertion grouting pipe 3 by a plug; otherwise, continuing to perform high-pressure grouting; wherein the threshold value of the cement paste amount is 50 kg-100 kg; the grouting pressure threshold is 5 MPa-8 MPa;
after the high-pressure grouting is finished and cement paste is solidified, 4n of the straight-inserting type grouting pipes 2 and 4n of the inclined-inserting type grouting pipes 3 form a reinforcing body 12 below the pier foundation 1, so that the pier foundation 1 is reinforced. During the in-service use, can cut off the slip casting pipe that is located on ground 4 after the slip casting is accomplished, ensure to cut off the position and 4 parallel and level on ground during cutting off.
In actual use, the cement paste is superfine cement paste or ordinary cement, the particle size of the superfine cement in the superfine cement paste is 0.2-20 microns, and the average particle size of the superfine cement in the superfine cement paste is 5-6 microns. The superfine cement slurry comprises the following components in parts by weight: 100 parts of superfine cement, 0.6-2.0 parts of fluid loss additive, 0.05-0.3 part of retarder hydroxyl-fork diphosphonic acid, 0.4 part of dispersing agent, 0.4 part of defoamer tributyl phosphate and 76 parts of water, wherein the superfine cement is GM8000 superfine cement, and the fluid loss additive is DSJ-S fluid loss additive; the cement paste adopts superfine cement paste, so that the reinforcement of the lower part of the pier foundation 1 is easier to realize, and the fluidity and the permeability are good.
In actual use, the superfine cement slurry can be replaced by common cement slurry, and the common cement slurry adopts a cement-water ratio of 1: 0.7, and P.O 32.5.5 ordinary Portland cement is adopted as the cement in the ordinary cement paste.
In actual use, the pressure of cement slurry injected into the lower part of the pier foundation 1 by the grouting hose 10 through the first grouting valve 5 is 1-5 MPa; the pressure of the cement slurry injected into the lower part of the pier foundation 1 by the grouting hose 10 through the second grouting valve 6 is 1 MPa-5 MPa.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (5)
1. The utility model provides a pier foundation reinforced structure which characterized in that: the device comprises a direct-insert grouting reinforcement mechanism which is vertically arranged on the outer side of a pier foundation (1) and is in contact with the outer edge of the pier foundation (1), and an inclined-insert grouting reinforcement mechanism which is obliquely arranged on the outer side of the pier foundation (1) and is in contact with the outer edge of the bottom of the pier foundation (1), wherein the direct-insert grouting reinforcement mechanism is inserted into the inner side of the inclined-insert grouting reinforcement mechanism;
the direct-insert grouting reinforcement mechanism comprises a plurality of direct-insert grouting pipes (2) which are uniformly distributed along the circumferential direction of a pier foundation (1), one end of each direct-insert grouting pipe (2) is tightly attached to the outer edge of the pier foundation (1) from top to bottom and inserted below the pier foundation (1), the other end of each direct-insert grouting pipe (2) extends out of the ground (4), a first grouting valve (5) is installed at one end, located on the lower side of the pier foundation (1), of each direct-insert grouting pipe (2), and a first check valve (8) is installed on a pipe section, located on the upper side of the first grouting valve (5) and close to the lower side of the pier foundation (1), of each direct-insert grouting pipe (2);
insert formula slip casting strengthening mechanism to one side includes a plurality of oblique inserting formula slip casting pipes (3) of evenly laying along pier foundation (1) circumferential direction, the one end of oblique inserting formula slip casting pipe (3) from top to bottom slant inserts the bottom to pier foundation (1), the other end of oblique inserting formula slip casting pipe (3) stretches out ground (4), oblique inserting formula slip casting pipe (3) are located second slip casting valve (6) are installed to the one end of pier foundation (1) bottom, lie in second slip casting valve (6) upside and be close to and install second check valve (9) on the pipeline section of pier foundation (1) bottom on the oblique inserting formula slip casting pipe (3), oblique inserting formula slip casting pipe (3) are located the region between two adjacent formula slip casting pipes (2) that cut straightly.
2. The pier foundation reinforcing structure according to claim 1, wherein an included angle between a central axis of the inclined-insertion type grouting pipe (3) in the length direction and a central axis of the straight-insertion type grouting pipe (2) in the length direction is α, and the value range of α is 20-30 degrees.
3. The pier foundation reinforcement structure according to claim 1, wherein: the first grouting valve (5) and the second grouting valve (6) are sleeve valves.
4. The pier foundation reinforcement structure according to claim 1, wherein: one end of the grouting pipe, which extends out of the ground (4), is communicated with a high-pressure grouting pump (11) through a grouting hose (10).
5. The pier foundation reinforcement structure according to claim 1, wherein: the number of the direct-insert grouting pipes (2) is equal to that of the inclined-insert grouting pipes (3), the number of the direct-insert grouting pipes is 12-20, the inner diameters of the direct-insert grouting pipes (2) and the inclined-insert grouting pipes (3) are 20-30 mm, the distance between the centers of every two adjacent direct-insert grouting pipes (2) is 200-500 mm, and the distance between the centers of every two adjacent inclined-insert grouting pipes (3) is 200-500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464642.1U CN210857184U (en) | 2019-09-03 | 2019-09-03 | Pier type foundation reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464642.1U CN210857184U (en) | 2019-09-03 | 2019-09-03 | Pier type foundation reinforcing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210857184U true CN210857184U (en) | 2020-06-26 |
Family
ID=71304032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921464642.1U Expired - Fee Related CN210857184U (en) | 2019-09-03 | 2019-09-03 | Pier type foundation reinforcing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210857184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453673A (en) * | 2019-09-03 | 2019-11-15 | 机械工业勘察设计研究院有限公司 | A kind of pier foundation ruggedized construction and method |
-
2019
- 2019-09-03 CN CN201921464642.1U patent/CN210857184U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453673A (en) * | 2019-09-03 | 2019-11-15 | 机械工业勘察设计研究院有限公司 | A kind of pier foundation ruggedized construction and method |
| CN110453673B (en) * | 2019-09-03 | 2023-12-05 | 机械工业勘察设计研究院有限公司 | Pier foundation reinforcement structure and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101319498B (en) | Lattice type prefabricated prestressed underground continuous wall and its construction method | |
| CN105569049A (en) | Construction method of high-pressure-bearing water-depth foundation pit supporting anchor rod | |
| CN110453673B (en) | Pier foundation reinforcement structure and method | |
| CN104912065B (en) | Dowel pile construction method under water | |
| CN103410144B (en) | Prestressed reinforcement piles set into rock and construction method | |
| CN210857184U (en) | Pier type foundation reinforcing structure | |
| CN102296617A (en) | Post-grouting reinforcement construction method of flexible joints of diaphragm walls | |
| CN101793027B (en) | Core-grouted static pressure anchor rod pile | |
| CN201292528Y (en) | Grouting machine | |
| CN205116159U (en) | Supporting rig dry process pore -forming bored concrete pile that digs soon of back slip casting | |
| CN106522959A (en) | Steel-structure waterproof jointing plate of well wall and construction process of steel-structure waterproof jointing plate | |
| CN201649099U (en) | Grout injector metal casting | |
| CN207760848U (en) | A kind of grouting component of composite foundation pile | |
| CN113789801B (en) | Water-rich foundation pit dewatering well plugging device and method | |
| CN214034153U (en) | Leakage-proof structure for construction joints of building engineering | |
| CN213267910U (en) | Ultra-deep foundation pit enclosure water stop structure | |
| CN210684709U (en) | Structure for improving bearing capacity of formed pile by external drilling grouting | |
| CN111172991B (en) | Embedded steel bar sleeve type prefabricated underground continuous wall | |
| CN210712891U (en) | Underground engineering deep well precipitation wellhead plugging structure | |
| CN210827606U (en) | Grouting head | |
| CN107419811A (en) | The method and its structure of basement bottom board support pile and spilled water hole waterproofing and leakage-stopping | |
| CN105442594A (en) | Hole reaming mud-jacking construction technology for prestress hollow square pile with built-in mud-jacking pipe | |
| CN216891988U (en) | Make things convenient for anchor extension sleeve deeply that buries of mud jacking | |
| CN208072393U (en) | A kind of pile pile of the built-in slip casting pipe with piecing devices | |
| CN204959784U (en) | Uplift pile structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 |