CN111962910A - Building underpinning foundation rotating displacement rectification method - Google Patents
Building underpinning foundation rotating displacement rectification method Download PDFInfo
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- CN111962910A CN111962910A CN202010817990.3A CN202010817990A CN111962910A CN 111962910 A CN111962910 A CN 111962910A CN 202010817990 A CN202010817990 A CN 202010817990A CN 111962910 A CN111962910 A CN 111962910A
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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Abstract
The invention discloses a building underpinned foundation rotary displacement rectification method, which relates to the field of building rectification.A ring-shaped working pit is excavated around a building, a displacement track is laid by establishing a track foundation with a space curved surface, an underpinned beam is arranged on an inclined building to construct an underpinned foundation, and after an independent cut foundation is connected with a frame column, the underpinned foundation drives the building to rotate and displace along the displacement track, so that the effective rectification of a three-dimensional space track is realized; aiming at the integral inclination possibly generated in any direction of a building, the inclination correction is realized through the rotation and the displacement of the three-dimensional space curved surface orbit, the limitation that the inclination correction of the current two-dimensional path is difficult to perform on the inclination correction of the inclination direction and the arrangement direction of the main shaft is overcome, and a self-recovery structure for realizing the shock insulation of the earthquake acting force in any direction can be formed after the inclination correction.
Description
Technical Field
The disclosure relates to the field of building inclination correction, in particular to a building underpinned foundation rotation displacement inclination correction method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The building inclination correction refers to the measures of inclination correction, strengthening and stabilization, which are taken when the inclination degree of the building exceeds the national relevant regulation requirements and seriously affects the safety and normal use of the building so as to ensure the safety of the building and recover the normal use function of the building.
The building displacement is a process of arranging a underpinning chassis and a displacement track below an original building, cutting off an upper structure of the building from an original foundation, arranging a traction or pushing device at one side of the building and moving the building to a new site. Generally, most of the building displacement techniques are to move the building in a horizontal direction.
The inventor finds that currently, a circular arc track is arranged in the inclined direction of a building, and the rectification is realized by a method of sliding along the circular arc track. However, the rotational path of this method is two-dimensional, and its cross section is a part of a circular arc, and the applicable conditions are limited: the method can be adopted only if the inclination direction of the building is consistent with the arrangement direction of main shafts of vertical members (columns or walls) of the building; in the traditional shifting process, the stability between the underpinning beams is poor, and the bending damage of the frame columns is easily caused by the change of the distance between the adjacent frame columns; in addition, the formed shock insulation structure can play a shock insulation role when the earthquake acting force direction is consistent with the building rotation displacement direction; but the inclination direction of the building is related to the distribution of foundation soil, so that the randomness is high, and the inclination direction is rarely just consistent with the arrangement direction of the main shaft of the vertical member of the building; the generation of earthquake action also has randomness and cannot be exactly consistent with the arrangement direction of a seismic isolation structure of a building, so that the existing rectification method and the seismic isolation structure are difficult to meet the requirements for buildings with inclination in any direction and earthquakes generated in any direction.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a rotary displacement and inclination correction method for an underpinned foundation of a building.
A building underpinned foundation rotation displacement rectification method comprises the following steps:
excavating working pits around the building to expose all independent foundations;
pouring a track foundation above the independent foundation, forming a space curved surface in the shape of a partial sphere on one side of the track foundation facing the building, covering all the independent foundations with the space curved surface, and laying a displacement track along the space curved surface;
casting underpinning beams on two sides of the building frame column, wherein the underpinning beams clamp and fixedly connect the frame column from two sides;
pouring between the top surface of the underpinning beam and the shifting track, and reserving construction gaps around the frame columns to form an underpinning foundation with the bottom adaptive to the space curved surface;
the connection between the frame column and the independent foundation is cut off from the construction gap, and the load of the building is transferred from the frame column and the independent foundation to the underpinning beam, the underpinning foundation, the shifting track and the track foundation;
filling construction gaps to form a complete bowl-shaped underpinning foundation;
the underpinning foundation is driven to rotate and shift along the shifting track, and the underpinning foundation stops when the inclination rate of the upper building is gradually reduced to meet the standard;
and processing the working pit to finish rectification.
Furthermore, the working pits are annular working pits, the diameter of each working pit is larger than the length of a diagonal line of the building, all the independent foundations are in the range of the working pits, and the bottom surface position of the independent foundation reaching the maximum sedimentation in the deepest part of each working pit is taken as the elevation.
Furthermore, the spherical center of the track foundation corresponding to the space curved surface is positioned right above the plane centroid of the building, and the independent foundations are poured in the track foundation.
Furthermore, the track foundation corresponds to one side with small settlement of the building, and extends to the outer edge of the independent foundation; and corresponding to the side with large settlement of the building, the track foundation extends to the outside of the independent foundation and the arc length distance of the rotary displacement is increased.
Furthermore, underpinning beams are poured on two sides of a longitudinal frame column or a transverse frame column of the building, the underpinning beams are connected with the frame column through reinforcing steel bars which are pre-implanted into the frame column, and the frame column is clamped from two sides.
Furthermore, the underpinning beam is perpendicular to the frame columns, and the elevation of the bottom of the underpinning beam is larger than the elevation of the intersection point of the outermost frame column and the rotary displacement track.
Furthermore, the underpinning foundation is poured in a segmented mode along the arrangement direction of the underpinning beams, a plate matched with the curved surface displacement track is adopted as a bottom template for the underpinning foundation to form a bowl-shaped underpinning foundation, and the bowl-shaped underpinning foundation is connected with the frame column through the underpinning beams.
Further, after the connection between the frame column and the independent foundation is cut off, the track foundation and the displacement track at the position of the frame column are constructed to form a complete rotary displacement track with a three-dimensional space curved surface structure, and the construction gap is filled to form a complete bowl-shaped underpinning foundation.
Further, in the process that the underpinning foundation drives the building to move along the displacement track, the highest point of the underpinning foundation gradually descends while rotating in the annular direction, the lowest point of the underpinning foundation gradually ascends while rotating in the annular direction, so that the top surface of the underpinning foundation tends to be horizontal, and the inclination rate of the building is gradually reduced to meet the requirement.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) the displacement track is laid by establishing a track foundation with a space curved surface, the underpinning beam is arranged on an inclined building to construct an underpinning foundation, after the cut-off independent foundation is connected with the frame column, the underpinning foundation drives the building to rotate and displace along the displacement track, the effective rectification of a three-dimensional space track is realized, the rectification is realized by rotating and displacing the three-dimensional space curved surface track aiming at the integral inclination which is possibly generated in any direction of the building, the limitation that the rectification of the inclination direction is difficult to be inconsistent with the arrangement direction of the main shaft in the current two-dimensional path is overcome, and a self-recovery structure for realizing shock insulation on the earthquake acting force in any direction can be formed after the rectification;
(2) the inclination correction is carried out by adopting a rotary displacement method, and compared with a forced landing method, the inclination correction is simpler, safer and controllable, the settlement amount, the soil digging amount and the water irrigation amount are not required to be estimated in advance, the inclination correction is directly completed by adopting a conventional measuring means, the integral rotary inclination correction of the building can be smoothly and stably realized, the reliability in the inclination correction process is improved, and the stability of the integral structure of the frame type building is ensured;
(3) the constructed track surface is a spherical part structure of a three-dimensional space curved surface, can be suitable for foundation settlement rectification in any direction and can generate a shock insulation effect on earthquakes in any direction, and the limitation of two-dimensional path rectification mentioned in the background technology is overcome;
(4) between the underpinning roof beam that the frame post of adjacent row corresponds, the pouring forms the underpinning foundation and connects, has maintained the interval between the adjacent frame post to increased the intensity of underpinning the roof beam, overcome traditional aversion in-process, the stability between the underpinning roof beam is not good, the interval of adjacent frame post changes the problem that leads to the bending damage of frame post easily, has improved the protectiveness to building overall frame structure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
FIG. 1 is a plan view of an independent foundation prior to rectification of a building in an embodiment of the present disclosure;
FIG. 2 is an elevation view of a building prior to longitudinal (X-axis) rectification in an embodiment of the disclosure;
FIG. 3 is an elevation view of a building prior to lateral (Y-axis) rectification in an embodiment of the present disclosure;
FIG. 4 is a plan view of an annular excavation of the perimeter of a building exposing an isolated foundation according to an embodiment of the disclosure;
FIG. 5 is a plan view of a curved displacement track for a hollow surface under construction in an embodiment of the present disclosure;
FIG. 6 is an elevation view of a construction hollow curved displacement track in the longitudinal direction (X-axis direction) of a building in an embodiment of the disclosure;
FIG. 7 is an elevation view of a construction hollow curved surface displacement track in the lateral direction (Y-axis direction) of a building in an embodiment of the disclosure;
FIG. 8 is a plan view of a clamped beam on both sides of a construction in an embodiment of the present disclosure;
FIG. 9 is an elevation view (perpendicular to the direction of the underpinning beam) of the two side clamping columns constructed in the embodiment of the present disclosure;
FIG. 10 is a plan view of a segmented cast bowl underpinning foundation in accordance with an embodiment of the present disclosure;
FIG. 11 is an elevation view of a segmented cast bowl underpinning foundation (perpendicular to the underpinning beam direction) in an embodiment of the present disclosure;
FIG. 12 is an elevational view (parallel to the direction of the underpinning beam) of a segmented cast bowl underpinning foundation according to an embodiment of the present disclosure;
FIG. 13 is an elevation view (perpendicular to the underpinning beam direction) of the connection between the truncated frame column and the free-standing foundation in an embodiment of the present disclosure;
FIG. 14 is a plan view of a one-piece bowl-shaped foundation joined by pouring voids between the segmented bowl-shaped foundations according to an embodiment of the present disclosure;
FIG. 15 is an elevation view (perpendicular to the direction of the underpinning beam) of a cast segmented bowl-shaped foundation connected as a unitary bowl-shaped foundation in an embodiment of the present disclosure;
FIG. 16 is a plan view of the embodiment of the present disclosure after rotational shift rectification;
FIG. 17 is an elevation view (perpendicular to the direction of the underpinning beam) after rotational displacement rectification in an embodiment of the present disclosure;
FIG. 18 is an elevational view (parallel to the direction of the underpinning beam) after rotational displacement rectification in an embodiment of the present disclosure.
Wherein: 1. along building vertical (X-axis) coordinate axis, 2 along building horizontal (Y-axis) coordinate axis, 3, building whole slope sinking direction, 4, independent foundation, 5, frame post, 6, foundation soil, 7, frame beam slab, 8, working pit slope top edge line, 9, rotation displacement track edge line, 10, underpinning beam, 11, bowl-shaped underpinning foundation.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.
As described in the background art, in the prior art, a circular arc track is arranged in the building inclination direction, and the inclination correction is realized by a rotary displacement method; but the rotating path of the method is two-dimensional, and the applicable conditions are limited; in order to solve the problems, the present disclosure provides a building underpinning foundation rotation displacement rectification method.
Example 1
In an exemplary embodiment of the present disclosure, as shown in fig. 1 to 18, a building underpinning foundation rotation displacement rectification method is provided.
The method for realizing the rectification by the rotation and the displacement of the three-dimensional space curved surface orbit can be used for the integral inclination possibly generated in any direction of the building, is not limited by the settlement direction, and can form a self-recovery structure for realizing the shock insulation of the earthquake acting force in any direction after the rectification.
The method comprises the following steps:
a building underpinned foundation rotation displacement rectification method comprises the following steps:
excavating working pits around the building to expose all the independent foundations 4, wherein the working pits are annular working pits, the diameter of each working pit is larger than the length of a diagonal line of the building, so that all the independent foundations are in the range of the working pits, and the bottom surface of each working pit, reaching the maximum sedimentation, is an elevation;
pouring a track foundation above the independent foundation, wherein a space curved surface in the shape of a partial spherical inner surface is formed on one side, facing the building, of the track foundation, the space curved surface covers all the independent foundations, the spherical center, corresponding to the space curved surface, of the track foundation is located right above the plane centroid of the building, the independent foundations are poured into the track foundation, and a displacement track is laid along the space curved surface;
casting underpinning beams on two sides of the building frame column, wherein the underpinning beams clamp and fixedly connect the frame column from two sides;
pouring between the top surface of the underpinning beam and the shifting track, and reserving construction gaps around the frame columns to form an underpinning foundation with the bottom adaptive to the space curved surface;
the connection between the frame column and the independent foundation is cut off from the construction gap, and the load of the building is transferred from the frame column and the independent foundation to the underpinning beam, the underpinning foundation, the shifting track and the track foundation;
filling construction gaps to form a complete bowl-shaped underpinning foundation;
after the connection between the frame column and the independent foundation is cut off, constructing a track foundation and a displacement track at the position of the frame column to form a complete rotary displacement track with a three-dimensional space curved surface structure, and filling construction gaps to form a complete bowl-shaped underpinning foundation;
the underpinning foundation is driven to rotate and shift along the shifting track, the highest point of the underpinning foundation gradually descends while rotating in the circumferential direction in the process that the underpinning foundation drives the foundation to move along the shifting track, the lowest point of the underpinning foundation gradually ascends while rotating in the circumferential direction, so that the top surface of the underpinning foundation tends to be horizontal, the inclination rate of the building is gradually reduced, and the underpinning foundation stops when the inclination rate of the upper building is gradually reduced to meet the standard;
processing the working pit to finish rectification; and (4) constructing the floor on the top surface of the corrected underpinned foundation, backfilling the earthwork of the working pit, and recovering the use function of the building.
Specifically, the inclination correction method in this embodiment is described in detail with reference to the accompanying drawings:
for the convenience of expression, setting the origin of a Cartesian coordinate system to coincide with the centroid of the building, defining the length direction of the building as the longitudinal direction, and expressing the length direction by the X-axis direction of the Cartesian coordinate system, wherein the coordinate axis is 1 along the longitudinal direction (X-axis) of the building; defining the width direction of the building as the transverse direction, and representing the width direction by the Y-axis direction, wherein the width direction is along the transverse (Y-axis) coordinate axis 2 of the building; defining the vertical direction of a building as the Z-axis direction; the overall inclination direction of the building is arbitrary, and generally does not coincide with the X, Y axis direction, and is shown as the overall inclination sinking direction 3 of the building.
The rectification method comprises the following steps:
1) digging an annular working pit in foundation soil 6 around the building with the inclination, wherein the diameter of the circular ring of the working pit is larger than the length of a diagonal line of the building so as to ensure that all the independent foundations 4 are in the range of the working pit;
the bottom surface position of the independent foundation which is required to reach the maximum sedimentation at the deepest part of the working pit is taken as elevation so as to ensure that all the independent foundations are exposed in the working pit, the upper part of each independent foundation corresponds to a frame column 5, and a frame beam plate 7 is arranged between the frame columns;
the circular side line of the slope top of the side slope of the annular working pit is the intersection line of the working pit and the natural ground, namely the upper side line 8 of the side slope of the working pit.
2) And pouring concrete on the independent foundation to form a rotary displacement track foundation with a three-dimensional space curved surface structure on the inner surface of the partial sphere.
It can be understood that since the frame columns are not disconnected from the independent foundation, the rotationally displaced track foundation here cannot be constructed for a while, the track foundation sphere center should be directly above the building plane centroid;
the radius of the sphere is usually set to 3 to 4 times the height of the building layer.
The bottommost vertex of the track should pass through the top surface of the plane centroid position independent foundation, and if no independent foundation exists at the centroid position, a higher point of the top surface of the adjacent independent foundation is taken; the rail elevation is ensured to be higher than the top surfaces of all the independent foundations;
the track setting range is arranged on the side with small building settlement and extends to the outer edge of the independent foundation; on the side of the building where the settlement is large, in addition to extending to the outer edge of the independent foundation, the arc length distance of the rotational displacement is increased, and the distance can be calculated according to the following formula:
L＝γR
wherein L is the distance of the rotation and displacement of the building; gamma is the inclination of the building; r is the radius of the rotationally displaced trajectory line.
3) And laying a rotary displacement track on the upper surface of the space curved surface track.
The rail can be a smooth steel plate or a tetrafluoroethylene plate. The curvature of the track is the same as the curvature of the foundation. The upper surface of the track is coated with grease to reduce the resistance during the rotation and the displacement;
the intersection line of the rotary displacement track corresponding to the track base top surface is a rotary displacement track boundary line 9.
4) The method comprises the steps of pouring reinforced concrete underpinning beams 10 on two sides of a longitudinal frame column of a building, connecting the underpinning beams with the frame column through reinforcing steel bars pre-implanted into the frame column, and clamping the frame column from two sides.
It can be understood that the concrete underpinning beams can also be poured from two sides of the transverse frame column of the building and fixedly connected with the frame column through the pre-poured steel bars;
it should be noted that, because the underpinning beams need to be matched with pouring to form the underpinning foundation, the underpinning beams do not need to be arranged in a staggered mode in the longitudinal and transverse directions, after the underpinning foundation is formed, stable connection can be formed between the adjacent underpinning beams, and the construction steps of the underpinning beams are reduced.
The underpinning beam is vertical to the frame column, and because the frame column is inclined before rectification, the included angle between the underpinning beam and the horizontal plane is the same as the inclined angle of the frame column.
In order to ensure that the underpinning beam is connected with the longitudinal (or transverse) frame column, the beam bottom elevation of the underpinning beam is greater than the elevation of the intersection point of the outermost frame column and the rotary displacement track.
5) The reinforced concrete bowl-shaped underpinning foundation 11 is sectionally poured along the longitudinal (or transverse) direction of the building.
According to the arrangement mode in the step 4), if the underpinning beams are arranged on two sides of the longitudinal frame column of the building, the underpinning foundation is poured along the longitudinal section, and similarly, if the underpinning beams are arranged transversely, the underpinning foundation is poured along the transverse section, so that the pouring operation is convenient to carry out.
The foundation is preferably made of a steel plate or tetrafluoroethylene plate with the same curvature as the curved surface track as a bottom template, and the top surface of the foundation is the same as the inclined angle of the underpinning beam.
And stopping pouring when the bowl-shaped underpinning foundation is poured to the position near the frame column, and reserving a vertical construction gap. Each section of bowl-shaped foundation is connected with the frame column by the underpinning beam.
It can be understood that the underpinning foundation connection is formed by pouring between the underpinning beams corresponding to the frame columns in the adjacent rows, the distance between the adjacent frame columns is maintained, the strength of the underpinning beams is increased, the problems that the stability between the underpinning beams is poor and the bending damage of the frame columns is caused by the easy change of the distance between the adjacent frame columns in the traditional shifting process are solved, and the protection on the whole frame structure of the building is improved.
6) In the gap of each section of the bowl-shaped underpinning foundation, the connection between the frame column and the independent foundation is cut off.
At this time, the load of the upper building is transferred from the frame column to the underpinning beam, the bowl-shaped underpinning foundation, the displacement track, the rotary displacement track foundation and finally transferred to the foundation soil.
7) And constructing a rotary displacement foundation and a track at the position of the frame column to form a complete rotary displacement track with a three-dimensional space curved surface structure.
And simultaneously, pouring gaps among all sections of the bowl-shaped underpinning foundations to form the complete bowl-shaped underpinning foundations.
8) And a traction device is arranged at the top of the side slope in the maximum settlement direction, the bowl-shaped underpinning foundation and a building supported by the bowl-shaped underpinning foundation are dragged to rotate and displace along a space curve track, and the inclination rate of the upper frame structure is gradually reduced. And when the inclination rate meets the specification requirement, stopping the rotation and the displacement.
Specifically, in this embodiment, in the process that the underpinning foundation drives the foundation to move along the displacement track, the highest point position of the underpinning foundation gradually descends while rotating in the circumferential direction, the lowest point position of the underpinning foundation gradually ascends while rotating in the circumferential direction, so that the top surface of the underpinning foundation tends to be horizontal, and the inclination rate of the building gradually decreases to meet the requirement.
9) And (5) removing the shifting traction device.
And (3) constructing the floor on the top surface of the bowl-shaped underpinned foundation, backfilling earthwork of the working pit, and recovering the use function of the building.
For the realization of multi-direction shock insulation, under the action of horizontal seismic force, a building can generate corresponding rotating moment and can slide along a space curved surface track;
when the building leaves the balance position for a certain inclination angle, the component force of the weight of the building along the tangent direction of the curved surface can be increased; generating an elastic force opposite to the moving direction;
in addition, the underpinning base bottom surface and the contact surface of the shifting track have friction force; the moment generated by the two forces can retard the building from further rotation and even return to the original equilibrium position. The energy consumption effect is generated in the reciprocating motion, and the shock damage of the building is prevented.
The energy consumption effect is generated in the reciprocating motion, and the shock damage of the building is prevented.
Laying a displacement track by establishing a track foundation with a space curved surface, arranging a underpinning beam on an inclined building to construct an underpinning foundation, and driving the building to rotate and displace along the displacement track through the underpinning foundation after the cutoff independent foundation is connected with the frame column to realize effective rectification of a three-dimensional track space track;
aiming at the integral inclination possibly generated in any direction of a building, the inclination correction is realized through the rotation and the displacement of the three-dimensional space curved surface orbit, the limitation that the inclination correction of the current two-dimensional path is difficult to perform on the inclination correction of the inclination direction and the arrangement direction of the main shaft is overcome, and a self-recovery structure for realizing the shock insulation of the earthquake acting force in any direction can be formed after the inclination correction.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A building underpinned foundation rotation displacement rectification method is characterized by comprising the following steps:
excavating working pits around the building to expose all independent foundations;
pouring a track foundation above the independent foundation, forming a space curved surface in the shape of a partial sphere on one side of the track foundation facing the building, covering all the independent foundations with the space curved surface, and laying a displacement track along the space curved surface;
casting underpinning beams on two sides of the building frame column, wherein the underpinning beams clamp and fixedly connect the frame column from two sides;
pouring between the top surface of the underpinning beam and the shifting track, and reserving construction gaps around the frame columns to form an underpinning foundation with the bottom adaptive to the space curved surface;
the connection between the frame column and the independent foundation is cut off from the construction gap, and the load of the building is transferred from the frame column and the independent foundation to the underpinning beam, the underpinning foundation, the shifting track and the track foundation;
filling construction gaps to form a complete bowl-shaped underpinning foundation;
the underpinning foundation is driven to rotate and shift along the shifting track, and the underpinning foundation stops when the inclination rate of the upper building is gradually reduced to meet the standard;
and processing the working pit to finish rectification.
2. The building underpinning foundation rotating displacement rectification method as claimed in claim 1, wherein the working pits are annular working pits, the diameter of each working pit is larger than the length of a diagonal line of the building, all the independent foundations are within the working pit range, and the bottom surface position of the independent foundation reaching the maximum sedimentation at the deepest part of each working pit is an elevation.
3. The building underpinning foundation rotating, shifting and correcting method as recited in claim 1, wherein the spherical center of the space curved surface corresponding to the track foundation is positioned right above the building plane centroid, and the independent foundations are all poured in the track foundation.
4. The building underpinned foundation rotating, shifting and rectifying method as recited in claim 3, wherein the rail foundation corresponds to the side with small settlement of the building, and the rail foundation extends to the outer edge of the independent foundation; and corresponding to the side with large settlement of the building, the track foundation extends to the outside of the independent foundation and the arc length distance of the rotary displacement is increased.
5. The building underpinned foundation rotating displacement inclination correcting method as claimed in claim 1, characterized in that underpinning beams are cast on both sides of the longitudinal frame columns or the transverse frame columns of the building, the underpinning beams are connected with the frame columns through reinforcing bars pre-implanted in the frame columns and clamp the frame columns from both sides.
6. The building underpinned foundation rotation displacement rectification method as claimed in claim 5, wherein the underpinned beam is arranged perpendicular to the frame columns, and the bottom elevation of the underpinned beam is greater than the elevation of the intersection point of the outermost frame column and the rotation displacement track.
7. The building underpinned foundation rotating displacement inclination correcting method according to claim 1, characterized in that the underpinned foundation is poured in sections along the arrangement direction of the underpinned beams, the underpinned foundation adopts a plate matched with the curved surface displacement track as a bottom template to form a bowl-shaped underpinned foundation, and the bowl-shaped underpinned foundation is connected with the frame column through the underpinned beams.
8. The building underpinning foundation rotating displacement rectification method as claimed in claim 1, characterized in that after the connection of the frame column and the independent foundation is cut off, the track foundation and the displacement track at the position of the frame column are constructed to form a complete rotating displacement track of a three-dimensional space curved surface structure, and the construction gap is filled to form a complete bowl-shaped underpinning foundation.
9. The building underpinning foundation rotating displacement inclination correcting method according to claim 1, characterized in that in the process that the underpinning foundation drives the building to move along the displacement track, the highest point position of the underpinning foundation gradually descends while rotating in the circumferential direction, and the lowest point position of the underpinning foundation gradually ascends while rotating in the circumferential direction, so that the top surface of the underpinning foundation tends to be horizontal, and the inclination of the building gradually decreases to meet the requirements.
10. The method for correcting the inclination of the underpinned foundation of the building by rotating and shifting the underpinned foundation as claimed in claim 1, wherein the ground of the building is constructed on the top surface of the corrected underpinned foundation, and the earthwork of the working pit is backfilled to restore the use function of the building.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817990.3A CN111962910B (en) | 2020-08-14 | 2020-08-14 | Building underpinning foundation rotating displacement rectification method |
| PCT/CN2021/074207 WO2022032994A1 (en) | 2020-08-14 | 2021-01-28 | Method for inclination rectification by rotational displacement of building underpinning foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010817990.3A CN111962910B (en) | 2020-08-14 | 2020-08-14 | Building underpinning foundation rotating displacement rectification method |
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| Publication Number | Publication Date |
|---|---|
| CN111962910A true CN111962910A (en) | 2020-11-20 |
| CN111962910B CN111962910B (en) | 2021-08-31 |
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| WO2022032994A1 (en) * | 2020-08-14 | 2022-02-17 | 山东建筑大学 | Method for inclination rectification by rotational displacement of building underpinning foundation |
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