CN114941453B - Foundation reinforcement construction method based on ancient building repair - Google Patents

Foundation reinforcement construction method based on ancient building repair Download PDF

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Publication number
CN114941453B
CN114941453B CN202210674577.5A CN202210674577A CN114941453B CN 114941453 B CN114941453 B CN 114941453B CN 202210674577 A CN202210674577 A CN 202210674577A CN 114941453 B CN114941453 B CN 114941453B
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China
Prior art keywords
grouting
foundation
original
pile body
edge sealing
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CN202210674577.5A
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CN114941453A (en
Inventor
董清崇
李拓
徐凯凯
叶梅
吕小龙
彭礼君
陈林璞
李健男
王春红
万仁威
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China Construction First Group Corp Ltd
China Construction First Divison Group Huajiang Construction Co Ltd
China Construction First Bureau Group Southeast Construction Co Ltd
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China Construction First Group Corp Ltd
China Construction First Divison Group Huajiang Construction Co Ltd
China Construction First Bureau Group Southeast Construction Co Ltd
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Publication of CN114941453A publication Critical patent/CN114941453A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements
    • E04G23/0229Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/16Arrangement or construction of joints in foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12Consolidating by placing solidifying or pore-filling substances in the soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/64Repairing piles

Abstract

The invention discloses a foundation reinforcement construction method based on ancient building repair, and relates to the technical field of ancient building foundation reinforcement. In order to solve the problem of overlarge grouting liquid expansion range, the method specifically comprises the following steps: taking the center of a primary pile body fixed on the primary foundation soil as a center point, and additionally arranging an edge sealing assembly outside the primary pile body; 2-8 grouting pipes are inserted into the original foundation soil within the wrapping range of the edge sealing assembly; preparing grouting liquid; grouting the grouting pipe in sections to perform foundation reinforcement construction; pulling out the edge sealing assembly and the grouting pipe; the pile foundation is fixed at the bottom end of the original pile body, and the original brick foundation is fixed at the bottom end of the pile foundation; the included angle between the original foundation soil and the grouting pipe is 45-60 degrees. The edge sealing assembly can surround the original pile body in an omnibearing manner, particularly grouting liquid, effectively improves sealing connectivity of the edge sealing assembly when in use by arranging the clamping groove plate, effectively reduces subsequent gap slurry leakage, avoids slurry waste, and ensures foundation reinforcement effect.

Description

Foundation reinforcement construction method based on ancient building repair
Technical Field
The invention relates to the technical field of foundation reinforcement of ancient buildings, in particular to a foundation reinforcement construction method based on ancient building repair.
Background
The ancient architecture is an important component of Chinese national culture and is a treasure of Chinese national. With the time and the environmental change, the soaked original soil structure can change, the bearing capacity and the compression modulus of the foundation of the ancient building are reduced, and the original foundation can generate new deformation under the action of load. In order to well reserve the existing building remains and exert the current vitality of the historical resources, and present the due annual sense and the appearance to the people, the building remains are usually reconstructed or protected in situ, such as the foundation or the reinforcement of the foundation and the foundation, so as to ensure the safety of the ancient building structure.
Taking the Jingdezhen of Jiangxi as an example, the ancient architecture of Jingdezhen, especially the community of ancient street, has long history, large quantity and rich types, and has the theory of nine street, eighteen lanes and one hundred and eight lines. When repairing the ancient building of scenic spot town, owing to mostly dregs piece soil locally, there is great problem of soil body permeability, so when this type foundation consolidates, the too big problem of slip casting liquid out-expansion scope easily appears, leads to the raw materials extravagant, and influences the problem of foundation reinforcement effect.
Based on the foundation, we propose a foundation reinforcement construction method based on ancient building repair.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a foundation reinforcement construction method based on ancient building repair.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a foundation reinforcement construction method based on ancient architecture restoration comprises the following steps:
s1: taking the center of a primary pile body fixed on the primary foundation soil as a center point, and additionally arranging an edge sealing assembly outside the primary pile body;
s2: 2-8 grouting pipes are inserted into the original foundation soil within the wrapping range of the edge sealing assembly;
s3: preparing grouting liquid;
s4: grouting the grouting pipe in sections to perform foundation reinforcement construction;
s5: pulling out the edge sealing assembly and the grouting pipe;
the pile foundation is fixed at the bottom end of the original pile body, and the original brick foundation is fixed at the bottom end of the pile foundation;
the included angle between the original foundation soil and the grouting pipe is 45-60 degrees;
the edge sealing assembly is formed by mutually clamping more than two arc-shaped steel plates and clamping groove plates, and one side surface of each clamping groove plate is fixedly connected with one side surface of each arc-shaped steel plate;
the width of the notch of the slot plate is the same as the thickness of the arc-shaped steel plate;
the arc angle of the arc-shaped steel plate is 60 degrees;
the diameter of the edge sealing component is 900-1500 mm, the thickness is 0.6-1.5 mm, and the height is 600-900 mm;
the bottom end of the grouting pipe is fixedly connected with a closed conical plug, and the cone angle of the conical plug is 30-60 degrees;
the diameter of the grouting pipe is 40 mm-60 mm, and the wall thickness is 2 mm-5 mm;
the outer wall of the grouting pipe is provided with grouting holes in an annular array shape, and the diameter of each grouting hole is 4-7 mm;
the outer wall of the edge sealing assembly close to the upper part is provided with a preformed hole, and the diameter of the preformed hole is 10 mm-20 mm;
the bottom ends of more than two arc-shaped steel plates are detachably provided with bevel-shaped notch plugboards;
the top ends of more than two arc-shaped steel plates are connected with an extension plate through a connecting part, and the extension plate has the same structure as the arc-shaped steel plates;
the connecting part consists of a connecting column fixed at the top end of the arc-shaped steel plate and a connecting hole arranged at the bottom end of the extension plate;
after step S5, the following is further included:
s101: forming a notch on the top of the pile foundation, processing the bottom of the original pile body into a bulge corresponding to the notch, and enabling the original pile body to be inserted into the top of the pile foundation by utilizing the bulge and the notch;
s102: taking a new pile body, and reserving a corresponding mortise and tenon at the joint of the new pile body and the original pile body;
s103: connecting the new pile body with the penetrating rod at the pier joint of the original pile body, and arranging a connecting groove on the new pile body and the original pile body at the penetrating rod;
s104: and fixing the new pile body and the original pile body by using the connecting piece, and blocking the connecting groove by using the filling block after construction.
Preferably: the ingredients of the grouting liquid are as follows in mass ratio of 1: cement paste of 0.5 and water glass.
Preferably: the sectional grouting comprises three grouting, wherein the grouting pressure of the first grouting is 0.5MP, the grouting pressure of the second grouting is 1MP, and the grouting pressure of the third grouting is 1.5MP;
the time of the second grouting and the third grouting is 2 hours after the previous grouting is finished.
Preferably: the sectional grouting further comprises the following contents:
a1: stopping grouting when the grouting holes overflow the grouting liquid;
a2: and sealing the grouting holes, and stabilizing the pressure for 50-80 seconds.
Preferably: the time for pulling out the edge sealing assembly and the grouting pipe is 5-24 hours after the sectional grouting is finished.
The beneficial effects of the invention are as follows:
1. according to the invention, the center of the original pile body is taken as a center point, the edge sealing assembly is additionally arranged on the periphery, so that the edge sealing assembly is fixed on the original foundation soil surface through the notch plugboard, the original pile body, especially grouting liquid, can be surrounded in an omnibearing manner by the edge sealing assembly, the sealing connectivity of the edge sealing assembly in use is effectively improved by arranging the slot clamping plate, the subsequent occurrence of gap slurry leakage is effectively reduced, the slurry waste is avoided, and the foundation reinforcement effect is ensured.
2. According to the invention, the grouting pipe is inserted into the original foundation soil in the wrapping range of the edge sealing assembly through the conical plug, and the included angle between the grouting pipe and the ground is adjusted to 60 degrees, so that the output efficiency of grouting liquid is improved; through setting up pull head, preformed hole, be convenient for apply force and pull out slip casting pipe, arc steel sheet, improve the operating efficiency.
3. The invention performs grouting three times in the grouting pipe, and each cubic cement slurry is doped with the water glass to perform foundation reinforcement construction so as to ensure better consolidation of soil mass and accelerate the solidification efficiency of grouting slurry.
4. According to the invention, during the foundation reinforcement construction period, the extension plates can be fixed above each arc-shaped steel plate through the connecting parts according to construction requirements, so that the foundation reinforcement height can be flexibly adjusted conveniently, and the height range of the wrapping slurry of the edge sealing assembly can be adjusted.
5. The invention slots at the joint of the new and old wood piers, uses the opposite-pull screw for fixation, and performs wood block plugging after construction is completed so as to ensure the appearance effect and improve the practicability.
Drawings
Fig. 1 is a schematic flow chart of a foundation reinforcement construction method based on ancient building repair;
fig. 2 is a schematic construction layout state structure diagram of a foundation reinforcement construction method based on ancient building repair according to the present invention;
FIG. 3 is a schematic diagram of a side view structure of an arc-shaped steel plate of a foundation reinforcement construction method based on ancient building repair;
fig. 4 is a schematic diagram of a top view structure of an arc-shaped steel plate of a foundation reinforcement construction method based on ancient building repair according to the present invention;
fig. 5 is a schematic diagram of a grouting pipe structure of a foundation reinforcement construction method based on ancient building repair according to the present invention;
fig. 6 is a schematic structural diagram of a grouting pipe of embodiment 2 of a foundation reinforcement construction method based on ancient building repair according to the present invention;
fig. 7 is a schematic diagram of an extended plate structure of an embodiment 3 of a foundation reinforcement construction method based on ancient building repair according to the present invention;
FIG. 8 is a schematic cross-sectional view of a pile foundation and a pile body in connection in example 4 of a method for reinforcing a foundation based on ancient architecture restoration according to the present invention;
FIG. 9 is a schematic diagram of an explosion structure of a new pile body and an original pile body in an embodiment 4 of a foundation reinforcement construction method based on ancient building restoration according to the present invention;
fig. 10 is a schematic diagram of a connection state between a new pile body and an original pile body in embodiment 4 of a foundation reinforcement construction method based on ancient building repair according to the present invention.
In the figure: 1 original brick foundation, 2 banding subassembly, 3 original foundation soil, 4 pile foundation, 5 original pile bodies, 6 slip casting pipe, 7 preformed hole, 8 incision picture peg, 9 draw-in groove board, 10 arc steel sheet, 11 slip casting hole, 12 toper plugs, 13 pull head, 14 connecting hole, 15 spliced pole, 16 extension board.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Example 1:
a foundation reinforcement construction method based on ancient architecture restoration, as shown in figures 1-5, comprises the following steps:
s1: taking the center of a primary pile body 5 fixed on the primary foundation soil 3 as a center point, and additionally arranging a sealing component 2 on the periphery of the primary pile body 5, so that the sealing component 2 surrounds the primary pile body 5 in an annular protection state;
s2: 4 grouting pipes 6 are inserted into the original foundation soil 3 within the wrapping range of the edge sealing assembly 2;
s3: preparing grouting liquid;
s4: grouting the grouting pipe 6 in a sectional manner to perform foundation reinforcement construction;
s5: the edge sealing assembly 2 and the grouting pipe 6 are pulled out.
S1, pile foundation 4 is fixed at the bottom end of original pile body 5, original brick foundation 1 is fixed at the bottom end of pile foundation 4, original pile body 5 is fixed on original foundation soil 3 through pile foundation 4 and original brick foundation 1, and therefore stability of original pile body 5 is guaranteed.
The diameter of the edge sealing assembly 2 is 1000mm, the thickness is 0.8mm, and the height is 700mm;
the edge sealing assembly 2 is formed by mutually splicing a plurality of arc-shaped steel plates 10 and clamping groove plates 9, and one side surface of each clamping groove plate 9 is welded to one side surface of each arc-shaped steel plate 10; a plurality of arcuate steel panels 10 are butted together using a clamping groove plate 9 to form the complete edge seal assembly 2.
Preferably, the notch width of the clamping groove plate 9 is the same as the thickness of the arc-shaped steel plate 10, so that each clamping groove plate 9 is matched with one side of the adjacent arc-shaped steel plate 10, the assembly is convenient, the sealing connectivity is improved, and the subsequent occurrence of gap slurry leakage is effectively reduced.
Preferably, for convenient construction, the arc angle of the single arc-shaped steel plate 10 is set to be 60 degrees, so that the single arc-shaped steel plate is convenient to splice into the integral annular edge sealing assembly 2.
Further, for convenient to detach banding subassembly 2 after the slip casting is finished, preformed hole 7 has been seted up to the outer wall that banding subassembly 2 is close to the top, and preformed hole 7's diameter is 15mm.
Further, in order to be convenient for be fixed in the foundation soil 3 with banding subassembly 2, the bottom of a plurality of arc steel sheets 10 is all demountable installation and is notch picture peg 8 that is the inclined plane form, conveniently is fixed in the foundation soil 3 face with banding subassembly 2.
In S2, the diameter of the grouting pipe 6 is 48mm, the wall thickness is 3mm, and the bottom end of the grouting pipe 6 is welded with a closed conical plug 12;
preferably, the included angle between the original foundation soil 3 and the grouting pipe 6 is 45-60 degrees, and preferably, in order to facilitate grouting, the included angle between the grouting pipe 6 and the surface of the original foundation soil 3 is 60 degrees in the embodiment;
preferably, the cone angle of the conical plug 12 is 30-60 °; the grouting pipe 6 is inserted into the original foundation soil 3 through the conical plug 12, and the included angle between the grouting pipe and the ground is adjusted to 60 degrees, so that the output efficiency of grouting liquid is improved.
Further, the outer wall of the grouting pipe 6 is provided with a plurality of groups of grouting holes 11 in an annular array, the distance between each group of grouting holes 11 is 80-120 mm, the distance between each group of grouting holes 11 in the embodiment is 100mm, and the uniform discharging of grouting liquid is improved.
Preferably, the diameter of the grouting holes 11 is 6mm.
The ingredients of the grouting liquid are as follows in mass ratio of 1:0.5 percent of cement slurry and water glass, wherein each cubic cement slurry is doped with 5 percent of water glass, so as to accelerate the solidification efficiency of the grouting slurry.
The sectional grouting comprises three grouting, wherein the grouting pressure of the first grouting is 0.5MP, the grouting pressure of the second grouting is 1MP, and the grouting pressure of the third grouting is 1.5MP.
Preferably, the time of the second grouting and the third grouting is 2 hours after the previous grouting is finished.
Further, the sectional grouting further comprises the following contents:
a1: stopping grouting when the grouting holes 11 overflow the grouting liquid;
a2: and sealing the grouting holes 11, and stabilizing the pressure for 50-80 seconds.
And S5, the time for pulling out the edge sealing assembly 2 and the grouting pipe 6 is 5-24 hours after the sectional grouting is finished.
When the pile foundation reinforcement device is used, firstly, the original pile body 5 to be subjected to foundation reinforcement is determined, the center of the original pile body 5 is taken as a center point, the edge sealing assembly 2 is additionally arranged on the periphery, specifically, firstly, the arc-shaped steel plates 10 are butted by the aid of the clamping groove plates 9, so that the complete edge sealing assembly 2 is formed, secondly, the arc-shaped steel plates 10 are pressed from the upper side in sequence, the edge sealing assembly 2 is fixed on the surface of the original foundation soil 3 through the notch plugboards 8, and therefore the edge sealing assembly 2 can surround the original pile body 5 in an omnibearing manner. Then, the four grouting pipes 6 are respectively arranged at 4 positions, are inserted into the original foundation soil 3 in the wrapping range of the edge sealing assembly 2 through the conical plugs 12, and adjust the included angle between the four grouting pipes and the ground to 60 degrees. After the assembly for surrounding the grout is assembled, the grouting liquid is prepared, and grouting is carried out on the grouting pipe 6 for three times, so that foundation reinforcement construction is carried out, and better consolidation of soil is ensured. And after the slurry is solidified, the edge sealing assembly 2 and the grouting pipe 6 are pulled out.
Example 2:
as shown in fig. 6, the foundation reinforcement construction method based on ancient architecture repair is used for conveniently pulling out the grouting pipe 6; the present example was modified on the basis of example 1 as follows: the pull head 13 is detachably connected to the top end of the grouting pipe 6, so that the grouting pipe 6 can be conveniently forced and pulled out by arranging the pull head 13, and the operation efficiency is improved.
When the grouting pipe 6 is used, the pulling head 13 is arranged, so that the grouting pipe 6 can be conveniently forced and pulled out, and the operation efficiency is improved.
Example 3:
a foundation reinforcement construction method based on ancient architecture repair is shown in figure 7, in order to flexibly adjust the height range of wrapping slurry of an edge sealing assembly 2; the present example was modified on the basis of example 1 as follows: the top ends of the plurality of arc-shaped steel plates 10 are connected with an extension plate 16 through connecting parts, and the extension plate 16 has the same structure as the arc-shaped steel plates 10;
the connecting part consists of a connecting column 15 fixed at the top end of the arc-shaped steel plate 10 and a connecting hole 14 arranged at the bottom end of an extension plate 16; during the foundation reinforcement construction, the extension plates 16 may be fixed above each arc-shaped steel plate 10 through the connection parts according to the construction requirements, thereby facilitating flexible adjustment of the foundation reinforcement height.
When the method is used, during foundation reinforcement construction, the extension plates 16 can be fixed above each arc-shaped steel plate 10 through the connecting parts according to construction requirements, so that the foundation reinforcement height can be flexibly adjusted.
Example 4:
in order to solve the problem of fixation during the pier connection of new and old wood, as shown in fig. 1-2 and fig. 8-10, the foundation reinforcement construction method based on ancient architecture repair, after step S5, further comprises the following steps:
s101: a notch is formed in the top of the pile foundation 4, the bottom of the original pile body 5 is processed into a bulge corresponding to the notch, the original pile body 5 is inserted into the top of the pile foundation 4 by utilizing the bulge and the notch, and the original pile body 5 is connected with the pile foundation 4;
s102: taking a new pile body, and reserving a corresponding mortise and tenon at the joint of the new pile body and the original pile body 5;
s103: connecting the new pile body with the penetrating rod at the pier joint of the original pile body 5, and arranging a connecting groove on the new pile body and the original pile body 5 at the penetrating rod;
s104: the new pile body and the original pile body 5 are fixed by using the connecting piece, and the connecting groove is plugged by using the filling block after construction is completed so as to ensure the effect of the outer vertical surface.
The pier connection length of the new pile body and the original pile body 5 is 400mm.
Preferably, the connector is a split screw.
Preferably, the padding block can be a wood block, a metal block, etc.
When the wood block plugging device is used, the groove is formed in the joint part of the new wood column pier and the old wood column pier, the opposite-pulling screw is used for fixing, and the wood block plugging is carried out after the construction is completed, so that the appearance effect is guaranteed.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.

Claims (5)

1. The foundation reinforcement construction method based on ancient architecture restoration is characterized by comprising the following steps of:
s1: taking the center of an original pile body (5) fixed on original foundation soil (3) as a center point, and additionally arranging an edge sealing assembly (2) on the periphery of the original pile body (5);
s2: 2-8 grouting pipes (6) are inserted into the original foundation soil (3) within the wrapping range of the edge sealing assembly (2);
s3: preparing grouting liquid;
s4: grouting the grouting pipe (6) in sections to perform foundation reinforcement construction;
s5: pulling out the edge sealing assembly (2) and the grouting pipe (6);
pile foundations (4) are fixed at the bottom ends of the original pile bodies (5), and original brick foundations (1) are fixed at the bottom ends of the pile foundations (4);
the included angle between the original foundation soil (3) and the grouting pipe (6) is 45-60 degrees;
the edge sealing assembly (2) is formed by mutually clamping more than two arc-shaped steel plates (10) and clamping groove plates (9), and one side surface of each clamping groove plate (9) is fixedly connected with one side surface of each arc-shaped steel plate (10);
the width of the notch of the clamping groove plate (9) is the same as the thickness of the arc-shaped steel plate (10);
the arc angle of the arc-shaped steel plate (10) is 60 degrees;
the diameter of the edge sealing assembly (2) is 900-1500 mm, the thickness is 0.6-1.5 mm, and the height is 600-900 mm;
the bottom end of the grouting pipe (6) is fixedly connected with a closed conical plug (12), and the cone angle of the conical plug (12) is 30-60 degrees;
the diameter of the grouting pipe (6) is 40-60 mm, and the wall thickness is 2-5 mm;
the outer wall of the grouting pipe (6) is provided with grouting holes (11) in an annular array mode, and the diameter of each grouting hole (11) is 4-7 mm;
the outer wall, close to the upper part, of the edge sealing assembly (2) is provided with a preformed hole (7), and the diameter of the preformed hole (7) is 10-20 mm;
the bottom ends of more than two arc-shaped steel plates (10) are detachably provided with bevel-shaped incision insertion plates (8);
the top ends of more than two arc-shaped steel plates (10) are connected with extension plates (16) through connecting parts, and the extension plates (16) have the same structure as the arc-shaped steel plates (10);
the connecting part consists of a connecting column (15) fixed at the top end of the arc-shaped steel plate (10) and a connecting hole (14) arranged at the bottom end of the extension plate (16);
after the step S5, the method further includes the following steps:
s101: a notch is formed in the top of the pile foundation (4), the bottom of the original pile body (5) is processed into a bulge corresponding to the notch, and the bulge and the notch are utilized to enable the original pile body (5) to be inserted into the top of the pile foundation (4);
s102: taking a new pile body, and reserving a corresponding mortise and tenon at the joint of the new pile body and the original pile body (5);
s103: connecting the new pile body with the original pile body (5) through a penetrating rod at the pier joint position, and arranging a connecting groove on the new pile body and the original pile body (5) at the penetrating rod position;
s104: and fixing the new pile body and the original pile body (5) by using a connecting piece, and plugging the connecting groove by using a filling block after construction.
2. The foundation stabilization construction method based on ancient building restoration according to claim 1, wherein the ingredients of the grouting liquid are in mass ratio of 1: cement paste of 0.5 and water glass.
3. The foundation stabilization construction method based on ancient building restoration according to claim 2, wherein the sectional grouting comprises three grouting, wherein the grouting pressure of the first grouting is 0.5MP, the grouting pressure of the second grouting is 1MP, and the grouting pressure of the third grouting is 1.5MP;
the time of the second grouting and the third grouting is 2 hours after the previous grouting is finished.
4. The foundation stabilization construction method based on ancient building restoration of claim 3, wherein the sectional grouting further comprises the following contents:
a1: stopping grouting when the grouting holes (11) overflow the grouting liquid;
a2: and sealing the grouting holes (11) and stabilizing the pressure for 50-80 seconds.
5. The foundation reinforcement construction method based on ancient building repair according to claim 4, wherein the time for pulling out the edge sealing assembly (2) and the grouting pipe (6) is 5-24 h after the sectional grouting is finished.
CN202210674577.5A 2022-06-15 2022-06-15 Foundation reinforcement construction method based on ancient building repair Active CN114941453B (en)

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