CN107090860B - Deviation rectifying and reinforcing structure of shallow foundation building and construction method thereof - Google Patents
Deviation rectifying and reinforcing structure of shallow foundation building and construction method thereof Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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Abstract
The invention discloses a deviation rectifying and reinforcing structure of a shallow foundation building and a construction method thereof, wherein the structure comprises a pile cap, an anchor rod static pressure pile, a pile sealing plate and a filling layer, wherein the pile cap is an original building shallow foundation or an additional foundation part added on an original building shallow foundation after the building is rectified, a pile pressing hole is formed in the upper surface of the pile cap, the static pressure pile is positioned in the pile pressing hole, the pile top of the static pressure pile is positioned in the pile pressing hole and is positioned in a hole section of the original building shallow foundation or the pile cap, concrete is poured in the pile pressing hole, anchor bars are arranged on the pile top of the anchor rod static pressure pile, and the anchor bars are anchored in the concrete in the pile pressing hole; the pile pressing anchor rod penetrates into the pile pressing anchor rod from the upper surface of the bearing platform and is positioned around the periphery of the pile pressing hole, the upper end of the pile pressing anchor rod is exposed out of the upper surface of the pile bearing platform, and concrete is poured at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing anchor rod to form a pile sealing plate. The invention performs correction treatment on the shallow foundation building and simultaneously plays a role in reinforcing the foundation which does not meet the original requirement.
Description
Technical Field
The invention belongs to a building structure deviation rectifying and reinforcing technology, and particularly relates to a shallow foundation building deviation rectifying and reinforcing structure which can be used for reinforcing a foundation of a building while rectifying a shallow foundation building and a construction method of the shallow foundation building deviation rectifying and reinforcing structure.
Background
Some inclined buildings often have the problem that the basic bearing capacity is not satisfied. Building deviation correcting methods generally comprise a soil drawing deviation correcting method, a precipitation treatment method, a stacking pressurization deviation correcting method, a broken column jacking method and the like.
The soil drawing correction method is to draw out part of soil under the foundation with smaller settlement of the inclined building to cause the soil body part under the foundation to be empty, so that the contact area between the part of foundation and the soil is reduced, the lateral soil squeezing deformation is caused, the soil under the foundation is forced to generate certain compaction subsidence or lateral extrusion deformation under the action of the dead weight of the building, and the differential settlement of the whole foundation is regulated, so that the purpose of correcting the inclination of the building is achieved.
The precipitation deviation correcting method is to set several sunk wells or well point pipes, large caliber precipitation well pipe and other deep well points on the ground on the side opposite to the outdoor inclination, pump to pump water, or to dig and drain water outside, to lower the ground water level forcefully, to reduce the pore water of soil and to make the soil compact and sink, so as to recover the inclination.
The pile load pressurization deviation correcting method is characterized in that when a building with a large live load is built on soft foundation soil, a large amount of concentrated load is applied in a short period of time or even load is applied, but the application rate is too fast, so that pore water pressure in a foundation soil body is not dissipated, the pore water pressure is not fully consolidated, the bearing capacity of the foundation is affected, when the external load exceeds the plastic load of the foundation, a plastic region appears on the foundation, part of the soil body is extruded from the side of the foundation, so that a large amount of settlement and even serious inclination of the building are caused, the pile load pressurization deviation correcting is to apply a temporary load on the side with small settlement of the building, and the settlement of the side is properly increased, so that uneven settlement difference and inclination are reduced.
The broken column jacking method is to cut off the column with more sedimentation positions according to the actual situation of the site for the frame structure building with inclination, then jack the column, reinforce the cut column after the displacement of the column jacking reaches the design requirement, and remove the jacking force, thereby achieving the purpose of correcting deviation. The defects of the building deviation correcting methods are as follows: the first three correction methods have limited application range and are only used for solving the problem of building inclination. When a building tilts and the basic bearing capacity does not meet the requirement, the problems that the building tilts and the basic bearing capacity does not meet the requirement can not be solved at the same time by the three methods; the broken column jacking method can strengthen the foundation of the building in the process of rectifying the deviation of the building, but the method needs to cut off the original structural column, has complex construction process and causes great damage to the original structure of the building.
Disclosure of Invention
The first aim of the invention is to provide a deviation rectifying and reinforcing structure of a shallow foundation building, which has simple structure, convenient construction and small damage to the original structure of the building, and can reinforce the foundation of the building in the deviation rectifying process of the shallow foundation building.
The first object of the present invention is achieved by the following technical measures: a shallow foundation building reinforcing structure that rectifies, its characterized in that: the pile foundation comprises a pile cap, an anchor rod static pile, a pile sealing plate and a filling layer which is poured into a gap between an original building shallow foundation or the pile cap and an underground soil layer, wherein the pile cap is an original building shallow foundation or an original building shallow foundation after deviation correction of a building, an additional foundation part is additionally arranged on the original building shallow foundation, the additional foundation part is combined with the original building shallow foundation to form the pile cap, a vertical pile pressing hole which extends to the underground soil layer is formed in the upper surface of the pile cap downwards, the anchor rod static pile comprises a static pile and a pile pressing anchor rod, the static pile is positioned in the pile pressing hole, the pile top of the static pile is positioned in a hole section of the original building shallow foundation or the pile cap, concrete is poured into the pile pressing hole, and an anchor bar is arranged on the pile top of the anchor rod static pile, and is anchored in the concrete in the pile pressing hole; the pile pressing anchor rod penetrates into the pile pressing anchor rod from the upper surface of the bearing platform and is positioned around the periphery of the pile pressing hole, the upper end of the pile pressing anchor rod is exposed out of the upper surface of the pile bearing platform, and concrete is poured at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing anchor rod to form a pile sealing plate.
According to the requirement of arranging the anchor rod static pressure pile and the requirement of related specifications, the invention takes the original building shallow foundation or an additional foundation part added on the original building shallow foundation as a pile cap, arranges the anchor rod static pressure pile, and takes the anchor rod static pressure pile foundation to underpin the whole original foundation to replace the original foundation to bear the building load, thereby achieving the purpose of reinforcing the building foundation. Meanwhile, in the construction process of the anchor rod static pressure pile, the building is lifted by utilizing the pile pressing reaction frame according to the requirement, so that the purpose of correcting the inclined building is achieved. In addition, the invention has simple structure, convenient construction, capability of ensuring engineering quality and wide application range.
As an embodiment of the invention, the additional foundation part is an enlarged foundation part, which is a concrete block, and which is connected to and integrated with the shallow foundation edge of the original building, and the pile pressing hole is located in the enlarged foundation part or in the shallow foundation of the original building.
As another embodiment of the invention, the additional foundation part is a thickened foundation part which is a concrete block, the thickened foundation part is covered on the upper surface of the original building shallow foundation and integrated with the original building shallow foundation, and the pile pressing holes are positioned in the thickened foundation part and the original building shallow foundation.
As a further embodiment of the invention, the additional base part is an enlarged thickened base part which encloses and is integrated with the original building shallow foundation, the pile pressing holes are located in the enlarged thickened base part or the pile pressing holes are located in the enlarged thickened base part and the original building shallow foundation.
As an improvement of the invention, a concrete cushion layer is arranged between the pile cap and the filling layer, and the concrete cushion layer passes through the pile pressing hole.
The second object of the invention is to provide a construction method of the deviation rectifying and reinforcing structure of the shallow foundation building.
The second object of the present invention is achieved by the following technical measures: the construction method of the deviation rectifying and reinforcing structure of the shallow foundation building is characterized by comprising the following steps of:
the method comprises the steps that an original building shallow foundation is excavated according to design requirements, a pile cap is an original building shallow foundation after the building is rectified or an additional foundation part is added on the original building shallow foundation, the additional foundation part is added on the original building shallow foundation, and the additional foundation part is combined with the original building shallow foundation to form the pile cap;
if the pile pressing hole is positioned on the shallow foundation of the original building, digging or pulling a core on the upper surface of the pile cap to form a pile pressing hole extending to the underground soil layer, implanting pile pressing anchor rods into the pile cap around the pile pressing hole on the upper surface of the pile cap, wherein the upper ends of the pile pressing anchor rods are exposed on the upper surface of the pile cap; if the pile pressing hole is positioned on the additional foundation part, reserving a pile pressing hole on the additional foundation part, embedding pile pressing anchor rods in the pile cap around the pile pressing hole on the upper surface of the pile cap, and exposing the upper ends of the pile pressing anchor rods on the upper surface of the pile cap;
thirdly, after the concrete strength of the pile cap meets the design requirement, installing a pile pressing reaction frame at a position corresponding to the pile pressing hole;
fourthly, vertically pressing the static pressure pile into the pile pressing hole by adopting a jack of the pile pressing counter-force frame;
fifthly, carrying out settlement observation and inclination measurement on the building, after the settlement stability of the pile cap is determined, then utilizing a jack of the pile pressing reaction frame to apply counter force to the static pile in the area which needs to be lifted according to the design requirement for lifting, and locking the pile pressing reaction frame to position the lifting height after the inclination of the shallow foundation building meets the design requirement, wherein a gap is formed between the pile cap and the underground soil layer;
filling a filling layer into a gap between the pile cap and the underground soil layer until the filling layer fills the whole gap; the filling layer can be made of cement mortar, the fluidity of the cement mortar is good, and the gap between the foundation and the underground soil layer can be ensured to be filled compactly. The cement mortar with better fluidity should be determined according to relevant specifications and regulations.
After the filling layer reaches the design strength, pile sealing treatment is carried out on a pile pressing hole of the static pile in the area which does not need to be lifted according to the design requirement, namely, the pile pressing hole is fixedly welded with the pile pressing anchor rod in a diagonal cross manner by using a reinforcing steel bar at the pile top, and then concrete is poured at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing hole to form a pile sealing plate;
unloading a jack of a pile pressing reaction frame, sealing a pile pressing hole of a static pile in a region which needs to be lifted according to design requirements, namely, welding a pile top with a pile pressing anchor rod diagonally and cross, and casting concrete at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing hole to form a pile sealing plate.
The design requirements described herein refer to reinforcement and deviation rectification goals for a building that meet relevant specifications in the industry.
In the step, pile extension is performed when the pile length of the static pile is insufficient according to design requirements during pile pressing, the static pile is a precast pile, and the pile length of each precast pile is generally 2-2.5 m.
In the step, lifting and grading are performed synchronously according to the design requirement, after each grade of lifting is completed, observation and measurement are performed, and after the inclination back amount of the area which does not need to be lifted is determined to be coordinated with the lifting amount of the area which needs to be lifted, next grade lifting of each area is performed.
In the step, pile pressing holes on the additional foundation part adopt a reserved mode, and pile pressing holes on the shallow foundation of the original building are drilled or core-pulling holes; the pile pressing anchor rod positioned on the additional foundation part adopts a pre-buried mode, and the pile pressing anchor rod positioned on the shallow foundation of the original building adopts a post-implantation mode.
Compared with the prior art, the invention has the following remarkable effects:
the method has the advantages that the original shallow foundation is integrally supported to be an anchor rod static pressure pile foundation while the deviation correction treatment is carried out on the shallow foundation building, and the effect of reinforcing the foundation which does not meet the original requirement is achieved.
In the method, when the deviation is corrected for the shallow foundation building, the damage to the original structural member of the building is small, and the original structural member of the building can be well reserved.
According to the invention, the inclined shallow foundation building can be well subjected to deviation rectifying treatment, and the deviation rectifying effect is obvious.
The invention has wide application range and is suitable for most of shallow foundation (strip foundation, raft foundation and the like) buildings.
The invention has the advantages of simple structure, low manufacturing cost, convenient construction and capability of ensuring engineering quality.
Drawings
The invention will now be described in further detail with reference to the drawings and to specific examples.
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a pile pressing reaction frame used in the construction process according to embodiment 1 of the present invention.
Detailed Description
Example 1
As shown in figure 1, the invention relates to a deviation rectifying and reinforcing structure of a shallow foundation building, which comprises a pile cap 1, an anchor rod static pressure pile, a concrete cushion layer 11, a pile sealing plate 4 and a filling layer (not shown in the figure) poured into a gap between the pile cap 1 and an underground soil layer 7, wherein the filling layer adopts cement mortar with better fluidity, so that the gap between a foundation and the underground soil layer can be ensured to be filled compactly. The anchor rod static pressure pile comprises a static pressure pile 2, a pile pressing anchor rod 3 and a reinforcing steel bar 17 for welding the pile pressing anchor rod 3. The elevation of the outdoor terrace is 15, and the elevation of the indoor terrace is 16. In the embodiment, the pile cap 1 is an additional foundation part added on an original building shallow foundation 5, the additional foundation part is combined with the original building shallow foundation 5 to form the pile cap 1, a vertical pile pressing hole 6 extending to an underground soil layer 7 is formed on the upper surface of the pile cap 1 downwards, a concrete cushion layer 11 is arranged between the pile cap 1 and cement mortar, the pile pressing hole 6 penetrates through the concrete cushion layer 7, a static pile 2 is positioned in the pile pressing hole 6, the pile top of the static pile 2 is positioned in a hole section of the pile pressing hole 6, concrete 8 is poured into the pile pressing hole 6, anchor bars 9 are arranged on the pile top of the static pile 2, and the anchor bars 9 are anchored in the concrete 8 of the pile pressing hole 6; the pile pressing anchor rod 3 penetrates into the pile pressing anchor rod from the upper surface of the pile cap 1 and is positioned on the periphery of the pile pressing hole 6, the upper end of the pile pressing anchor rod 3 is exposed on the upper surface of the pile cap, the pile pressing anchor rod 3 is welded firmly by diagonally crossing the pile top by using the reinforcing steel bars 17, and then concrete is poured at the pile pressing hole 6, so that the pile pressing anchor rod 3 is sealed in the pile pressing anchor rod to form a pile sealing plate 4.
In practical construction, the additional foundation portion should be designed according to the requirements of the arrangement of the anchor static pile and the requirements of the related specifications. In this embodiment, the additional foundation portion is an enlarged thickened foundation portion 10, the enlarged thickened foundation portion 10 covers and is integrated with the original building shallow foundation 5, and the pile pressing holes 6 are located in the enlarged thickened foundation portion 10, and the static piles are arranged according to the requirement. Pile pressing holes of static pressure piles are reserved when the thickened foundation part 10 is applied, and pile pressing anchor rods are pre-buried; in other embodiments, the pile pressing holes are drilled in the enlarged thickened foundation part and the shallow foundation of the original building, pile pressing anchor rods are implanted at corresponding positions, and appropriate reinforcement treatment is carried out on the drilled positions, wherein the pre-buried or post-implanted anchor rods meet relevant specifications and use requirements. The static pressure pile 2 is a precast pile, pile extension is carried out when the pile length of the static pressure pile 2 is insufficient, and the pile length of each precast pile is 2-2.5 m.
When the shallow foundation of the original building is provided with a concrete cushion layer and meets the standard requirements, the thickened foundation part is enlarged to be provided with the concrete cushion layer, and the thickness of the concrete cushion layer and the strength grade meet the related standard and the use requirements.
The construction method of the deviation rectifying and reinforcing structure of the shallow foundation building comprises the following steps:
the method comprises the steps that an original building shallow foundation 5 is excavated according to design requirements, an additional foundation part is added on the original building shallow foundation after deviation correction of a building or the original building shallow foundation, the additional foundation part is added on the original building shallow foundation, the additional foundation part and the original building shallow foundation are combined to form a pile cap, in the embodiment, an enlarged thickened foundation part 10 is added on the original building shallow foundation 5, and the enlarged thickened foundation part 10 covers the original building shallow foundation 5 and is combined with the original building shallow foundation to form a pile cap 1;
downwards excavating pile pressing holes 6 extending to an underground soil layer 7 on the upper surface of a pile cap 1, namely, the pile pressing holes 6 are positioned in an enlarged thickened foundation part 10, pile pressing holes 6 of static pressure piles 2 are reserved when the enlarged thickened foundation part 10 is applied, and pile pressing anchor rods 3 penetrate into the pile cap 1 on the upper surface of the pile cap 1 and at the periphery of the pile pressing holes 6 in the circumferential direction of the pile cap 1; the pile pressing anchor rod 3 positioned in the enlarged thickened base part 10 is pre-buried when the enlarged thickened base part 10 is applied, the pile pressing anchor rod 3 positioned in the original building shallow foundation 5 adopts a post-implantation mode, and the upper end of the pile pressing anchor rod 3 is exposed on the upper surface of the pile cap 1; wherein, the pre-buried or post-implanted anchor rod meets the relevant specification and the use requirement;
after the concrete strength of the thickened foundation portion 10 is increased to meet the design requirement, installing a pile pressing reaction frame at a position corresponding to a pile pressing hole, as shown in fig. 2, wherein the pile pressing reaction frame is existing equipment in the technical field and mainly comprises a vertical bracket 14, a jack 12 and a positioning cross beam 13;
the static pile 2 is vertically pressed into the pile pressing hole 6 downwards by adopting the jack 12 of the pile pressing reaction frame, the pile pressing process must be continuous, and the pile pressing force cannot exceed the designed maximum pile pressing force; in the pile pressing process, pile extension is carried out when the pile length of the static pressure pile 2 is insufficient according to design requirements, the static pressure pile 2 is a precast pile, and the pile length of each precast pile is 2-2.5 m. Stopping pile pressing when the pile is pressed to the design requirement, and temporarily not performing pile sealing treatment;
carrying out settlement observation and inclination measurement on a building, after the settlement stability of a pile cap is confirmed, then utilizing a jack 12 of a pile pressing reaction frame to apply counter force to a static pile 2 in a region which needs to be lifted according to design requirements to lift, wherein in the lifting process, lifting and grading are carried out synchronously according to the lifting of each region which needs to be lifted, the lifting amount of each stage is not more than 10mm, after each stage of lifting is completed, after the inclination back amount of the region which does not need to be lifted is confirmed to be coordinated with the lifting amount of the region which needs to be lifted, next stage lifting of each region is carried out until the inclination of the shallow foundation building meets the design requirements, and then locking a positioning beam 13 of the pile pressing reaction frame to position the lifting height, and at the moment, a gap is formed between the pile cap and an underground soil layer; the areas which need to be lifted according to the design requirements are areas which are determined in the design requirements and need to be rectified. Dynamically observing the inclination and verticality of the shallow foundation building in the lifting process, wherein the lifting amount is monitored at least at one observation point at each lifting position;
sixth, cement mortar is poured into a gap between the pile cap 1 and the underground soil layer 7 until the whole gap is filled with the cement mortar;
after the cement mortar reaches the design strength, pile sealing treatment is carried out on the pile pressing hole of the static pressure pile in the area which does not need to be lifted according to the design requirement, namely, the pile pressing anchor rod is sealed in the pile pressing hole by casting concrete at the pile pressing hole to form a pile sealing plate; concrete 8 is poured into the pile pressing hole 6 according to design requirements, the pile top is welded firmly with the pile pressing anchor rod 3 in a diagonal cross mode through steel bars 17, then concrete is poured, and early-strength concrete is preferably selected as the concrete;
the jack 12 of the pile pressing reaction frame is subjected to grading unloading, then pile sealing treatment is carried out on a pile pressing hole of the static pile in a region which needs to be lifted according to design requirements, namely, a pile pressing anchor rod is sealed in the pile pressing hole to form a pile sealing plate by casting concrete at the pile pressing hole, specifically, concrete 8 is poured into the pile pressing hole 6 according to the design requirements, steel bars 17 are used for the pile top to be welded with the pile pressing anchor rod 3 in a diagonal cross manner, and then the concrete is cast, wherein the concrete is preferably early-strength concrete.
When the shallow foundation of the original building is provided with a concrete cushion layer and meets the specification requirements, the concrete cushion layer is arranged on the enlarged thickened foundation part according to the design requirements before the enlarged thickened foundation part is applied, and the thickness and the strength grade of the cushion layer meet the related specification and the use requirements.
Example 2
This embodiment differs from embodiment 1 in that: when the original building shallow foundation meets the standard requirement, the pile cap can be the original building shallow foundation, at the moment, the pile pressing hole and the pile pressing anchor rod are both positioned on the original building shallow foundation, the pile pressing hole is formed by cutting or core pulling and pore forming on the original building shallow foundation, and the pile pressing anchor rod adopts a post-implantation mode.
The construction method of the present embodiment is different from the construction method of embodiment 1 in that: the step of constructing the additional foundation portion is omitted and the remaining steps are the same.
Example 3
This embodiment differs from embodiment 1 in that: the additional foundation part is an enlarged foundation part, the enlarged foundation part is a concrete block, the enlarged foundation part is connected with the edge of the original building shallow foundation and is integrated with the edge of the original building shallow foundation, the pile pressing hole is formed in the enlarged foundation part in a reserved mode, or the pile pressing hole is formed in the original building shallow foundation by cutting or core pulling and hole forming on the original building shallow foundation, correspondingly, the pile pressing anchor rod on the enlarged foundation part adopts a pre-buried mode, and the pile pressing anchor rod on the original building shallow foundation adopts a post-implantation mode.
The construction method of this example is substantially the same as that of example 1.
Example 4
This embodiment differs from embodiment 1 in that: the additional foundation part is a thickened foundation part which is a concrete block, the thickened foundation part is covered on the upper surface of the original building shallow foundation and is integrated with the original building shallow foundation, the pile pressing holes are arranged in the thickened foundation part and the original building shallow foundation, the hole sections of the original building shallow foundation are formed by cutting or core pulling holes on the original building shallow foundation, and the hole sections positioned in the thickened foundation part are reserved when the thickened foundation part is applied.
The construction method of this example is substantially the same as that of example 1.
The embodiments of the present invention are not limited thereto, and according to the above-described aspects of the present invention, the present invention may be modified, replaced or altered in various other ways without departing from the basic technical spirit of the present invention, all of which fall within the scope of the claims of the present invention, according to the general technical knowledge and conventional means of the present art.
Claims (5)
1. The construction method of the deviation correcting and reinforcing structure of the shallow foundation building comprises a pile cap, an anchor rod static pile, a pile sealing plate and a filling layer, wherein the filling layer is poured into a gap between an original building shallow foundation or the pile cap and an underground soil layer; the pile pressing anchor rod penetrates into the pile pressing anchor rod from the upper surface of the bearing platform and is positioned around the periphery of the pile pressing hole, the upper end of the pile pressing anchor rod is exposed out of the upper surface of the pile bearing platform, and concrete is poured at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing anchor rod to form a pile sealing plate, and the construction method is characterized by comprising the following steps of:
the method comprises the steps that an original building shallow foundation is excavated according to design requirements, a pile cap is an original building shallow foundation after the building is rectified or an additional foundation part is added on the original building shallow foundation, the additional foundation part is added on the original building shallow foundation, and the additional foundation part is combined with the original building shallow foundation to form the pile cap;
if the pile pressing hole is positioned on the shallow foundation of the original building, digging or pulling a core on the upper surface of the pile cap to form a pile pressing hole extending to the underground soil layer, implanting pile pressing anchor rods into the pile cap around the pile pressing hole on the upper surface of the pile cap, wherein the upper ends of the pile pressing anchor rods are exposed on the upper surface of the pile cap; if the pile pressing hole is positioned on the additional foundation part, reserving a pile pressing hole on the additional foundation part, embedding pile pressing anchor rods in the pile cap around the pile pressing hole on the upper surface of the pile cap, and exposing the upper ends of the pile pressing anchor rods on the upper surface of the pile cap;
thirdly, after the concrete strength of the pile cap meets the design requirement, installing a pile pressing reaction frame at a position corresponding to the pile pressing hole;
fourthly, vertically pressing the static pressure pile into the pile pressing hole by adopting a jack of the pile pressing counter-force frame;
after determining that the settlement of the pile cap is stable, applying counter force to the static pressure pile in the area which needs to be lifted according to the design requirement by using a jack of the pile pressing counter force frame to lift the static pressure pile until the inclination of the shallow foundation building meets the design requirement, and locking the pile pressing counter force frame to position the lifted height, wherein a gap is formed between the pile cap and the underground soil layer;
filling a filling layer into a gap between the pile cap and the underground soil layer until the filling layer fills the whole gap;
after the filling layer reaches the design strength, pile sealing treatment is carried out on a pile pressing hole of the static pile in the area which does not need to be lifted according to the design requirement, namely, the pile top is welded firmly by steel bars and the opposite angles of the pile pressing anchor rod in a crossing manner, and then concrete is poured at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing hole to form a pile sealing plate;
unloading a jack of a pile pressing reaction frame, sealing a pile pressing hole of a static pile in a region which needs to be lifted according to design requirements, namely, welding a pile top with a pile pressing anchor rod diagonally and cross, and casting concrete at the pile pressing hole to enable the pile pressing anchor rod to be sealed in the pile pressing hole to form a pile sealing plate.
2. The construction method according to claim 1, wherein: in the step, pile extension is carried out when the pile length of the static pile is insufficient according to design requirements in the pile pressing process, and the static pile is a precast pile.
3. The construction method according to claim 2, wherein: the pile length of each precast pile is 2.0-2.5 m.
4. A construction method according to claim 3, wherein: in the step, in the lifting process, lifting and grading are performed synchronously according to the design requirement, and after each stage of lifting is completed, the inclination amount of the area which does not need to be lifted is coordinated with the lifting amount of the area which needs to be lifted, and then the next stage of lifting of each area is performed.
5. The construction method according to claim 4, wherein: in the step II, pile pressing holes positioned on the additional foundation part adopt a reserved mode, and the pile pressing holes positioned on the shallow foundation of the original building are formed by cutting or core pulling holes; the pile pressing anchor rod positioned on the additional foundation part adopts a pre-buried mode, and the pile pressing anchor rod positioned on the shallow foundation of the original building adopts a post-implantation mode.
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| CN201710324097.5A CN107090860B (en) | 2017-05-09 | 2017-05-09 | Deviation rectifying and reinforcing structure of shallow foundation building and construction method thereof |
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| CN201710324097.5A CN107090860B (en) | 2017-05-09 | 2017-05-09 | Deviation rectifying and reinforcing structure of shallow foundation building and construction method thereof |
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| CN113073689B (en) * | 2021-04-08 | 2022-08-09 | 深圳市中南建筑加固技术有限公司 | Shallow foundation building deviation rectifying and reinforcing structure and construction method |
| CN114108678B (en) * | 2021-11-19 | 2023-08-22 | 浙江省送变电工程有限公司 | Anchor rod static pressure pile construction method for reinforcing transformer substation foundation |
| CN114922171B (en) * | 2022-04-28 | 2023-12-29 | 浙江宏日泰耐克新材料科技有限公司 | Foundation reinforcing structure of multi-layer masonry building and construction method |
| CN116815837B (en) * | 2023-08-29 | 2023-11-17 | 上海建工一建集团有限公司 | Pre-lifting construction method for soft soil geological super-high-rise piled raft foundation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007182741A (en) * | 2006-01-04 | 2007-07-19 | Mitsuru Honda | Differentially settled foundation correcting and reinforcing method by underpinning |
| CN102605783A (en) * | 2012-01-10 | 2012-07-25 | 葛培中 | Construction method for applying prestress to anchor jacked piles |
| CN102966128A (en) * | 2012-11-28 | 2013-03-13 | 三峡大学 | Water and air jetting correction method with anchor rod static steel casing |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009263907A (en) * | 2008-04-23 | 2009-11-12 | Sumitomo Forestry Co Ltd | Foundation structure for correcting settlement of building |
| RU2382146C1 (en) * | 2008-08-04 | 2010-02-20 | Владимир Николаевич Бронин | Method for straightening of slant in building erected on pile foundation |
| CN104975622B (en) * | 2015-07-18 | 2017-01-11 | 兰州理工大学 | Correction and reinforcement method for precast pile foundation of high-rise building |
| CN206873517U (en) * | 2017-05-09 | 2018-01-12 | 广东省建筑科学研究院集团股份有限公司 | A kind of shallow foundation rectifying of leaned building ruggedized construction |
-
2017
- 2017-05-09 CN CN201710324097.5A patent/CN107090860B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007182741A (en) * | 2006-01-04 | 2007-07-19 | Mitsuru Honda | Differentially settled foundation correcting and reinforcing method by underpinning |
| CN102605783A (en) * | 2012-01-10 | 2012-07-25 | 葛培中 | Construction method for applying prestress to anchor jacked piles |
| CN102966128A (en) * | 2012-11-28 | 2013-03-13 | 三峡大学 | Water and air jetting correction method with anchor rod static steel casing |
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