DE202023103542U1 - An injected composite foundation for building reinforcement and deflection correction - Google Patents

Abstract

An injected composite foundation for building reinforcement and deflection correction, characterized in that it comprises:
a bedding reinforcement layer (10), the bedding reinforcement layer (10) being formed by the original bedding and the solidification of the paste, the injection hole of the bedding reinforcement layer (50) extending from the ground surface hole to the lower surface of the original bedding layer, the paste being injected into the original Bedding layer is injected through the injection hole of the bedding reinforcement layer (50);
a foundation reinforcement platform (20), the foundation reinforcement platform (20) being formed by the original foundation and the solidification of the paste, the foundation reinforcement injection hole (60) extending from the ground surface to the lower surface of the original foundation, the paste passing through the injection hole for foundation reinforcement (60) is injected into the original foundation, the foundation reinforcement platform (20) being located below the bedding reinforcement layer (10);
a sub-column pile foundation (30), wherein on the underside of the foundation reinforcement platform (20) a plurality of the sub-column pile foundations (30) are provided at intervals, the sub-column pile foundation (30) being formed by solidification of paste which is injected or solidifies into the injection hole for the foundation reinforcement becomes.

Description

Technical part

The utility model relates to the technical field of foundation raising and deflection correction techniques, in particular an injected composite foundation for building reinforcement and deflection correction.

State of the art

In order to prevent the building from settling, tipping or even collapsing after completion, the subsoil of the structure is first compacted and reinforced to form a load-bearing foundation before construction of the upper house structure begins. For example, in the current frame-built high-rise buildings, the basic structure of the load-bearing foundation is as follows: the original foundation is first made by pile driving, then a sand and gravel bedding layer is laid on top of the original foundation, and finally a concrete valve plate is placed on the sand and gravel bedding layer laid. However, in some cases, after the heavy ramming, the soil layer is still weak and the soil is floating, the strength of the weak soil layer is insufficient and the bearing capacity of the foundation is low, resulting in uneven settlement of the foundation. In this case, the supporting foundation needs to be reinforced with paste to improve the bearing capacity of the foundation so that the settlement difference reaches the allowable range.

• 1. Es besteht die Gefahr, dass das Gebäudefundament während des Hochdruckeinspritz-und Hebevorgangs durch Stöße beschädigt wird, was zu lokalen Ausbeulungen und sogar zu Rissen im Fundamentboden führt.
• 2. Der Stand der Technik hat den Nachteil eines kleinen Einspritzungslochabstands, vieler Öffnungen und eines großen Lochdurchmessers: Der kleine Einspritzungslochabstand, die vielen Öffnungen und der große Lochdurchmesser verursachen mehr Schäden am Gebäudefundament und können zu einer verkürzten Nutzungsdauer des Gebäudefundaments führen.
• 3. Der Stand der Technik hat eine geringe Einspritzungstiefe, die für die Einspritzungsbewehrung von schwachen Fundamenten mit großer Tiefe nicht geeignet ist.

The state of the art is to directly grout and lift the soil layer beneath the building foundation (i.e. the original rammed earth foundation). This leads to secondary settlement and damage to the original foundations. The prior art has the following problems in particular:

• 1. There is a risk that the building foundation will be damaged by impact during the high-pressure injection and lifting process, resulting in local buckling and even cracks in the foundation floor.
• 2. The prior art has the disadvantage of small injection hole pitch, many openings and large hole diameter: The small injection hole pitch, many openings and large hole diameter cause more damage to the building foundation and may lead to a shortened service life of the building foundation.
• 3. The prior art has a shallow injection depth, which is not suitable for the injection reinforcement of weak foundations with a large depth.

Content of the utility model

The primary purpose of the utility model is to provide an injected composite foundation for building reinforcement and deflection correction to solve the problem that prior art foundation lifting and deflection correction techniques tend to cause secondary settlement damage to the original foundation

In order to achieve the above purpose, the utility model provides an injected composite foundation for building reinforcement and deflection correction, which includes a bedding reinforcement layer, a foundation reinforcement platform and a sub-column pile foundation, the bedding reinforcement layer being formed by the original bedding and the solidification of the paste, the injection hole being the Bedding reinforcement layer extends from the ground surface hole to the lower surface of the original bedding layer, the paste being injected into the original bedding layer through the injection hole of the bedding reinforcement layer; wherein the foundation reinforcement platform is formed by the original foundation and the solidification of the paste, the foundation reinforcement injection hole extending from the ground surface to the lower surface of the original foundation, the paste being injected into the original foundation through the foundation reinforcement injection hole, the Foundation reinforcement platform is located below the bedding reinforcement layer; wherein at the bottom of the foundation reinforcement platform, a plurality of the sub-column pile foundations are provided at intervals, the sub-column pile foundations being formed by solidifying paste injected into the foundation reinforcement injection hole.

Further, the injected composite foundation for building reinforcement and deflection correction includes an original concrete valve plate, wherein the bedding reinforcement layer is located on the underside of the original concrete valve plate and is held together with it by paste.

Further, the sub-column pile foundation penetrates laterally into the soft soil layer below the foundation reinforcement platform by means of the paste to form a tree root shape.

Furthermore, the sub-column pile foundation forms by controlling the grouting and injection pressure an apron ladder shape that gradually rises from top to bottom.

Furthermore, the sub-column pile foundation is distributed around the supporting columns of the building.

By applying the technical solution of the utility model, the original bedding layer and the original foundation are first reinforced by grouting from top to bottom and layer by layer to form a bedding reinforcement layer and a foundation reinforcement platform, so that the original building foundation is connected into a whole and its structural Strength is improved. Then the soft soil layer below the foundation reinforcement platform is perforated and injected with paste to form a sub-column pile foundation, and the building foundation is raised by the supporting force of the sub-column pile foundation to achieve the purpose of deflection correction. During construction work, the bedding reinforcement layer, the foundation reinforcement platform and the sub-column pile foundation form a three-dimensional support system through the layered reinforcement. The building foundation is reinforced first, and then the building foundation is raised, thereby realizing the integration of building reinforcement and deflection correction. The aim is to successfully solve the uneven settlement of the building and raise and correct the deviation of the foundation, so that the building foundation achieves the bearing capacity requirements and the range of allowable deviation and avoids secondary settlement damage.

Description of the drawings

• 1 zeigt eine schematische Darstellung des Gesamtaufbaus des eingespritzten Verbundfundaments zur Gebäudebewehrung und Durchbiegungskorrektur;
• 2 zeigt eine schematische Darstellung des vergrößerten Aufbaus der Bettungsbewehrungsschicht, Fundamentbewehrungsplattform, Untersäulenpfahlgründung und ursprünglichen Betonventilplatte.

The attached drawings, which are part of this application, serve to further understand the utility model. The schematic embodiments of the utility model and their descriptions serve to explain the utility model and do not represent an inadmissible restriction of the utility model. In the figures:

• 1 shows a schematic representation of the overall structure of the injected composite foundation for building reinforcement and deflection correction;
• 2 shows a schematic representation of the enlarged structure of the bedding reinforcement layer, foundation reinforcement platform, sub-column pile foundation and original concrete valve plate.

• 10. Bettungsbewehrungsschicht, 20. Fundamentbewehrungsplattform, 30. Untersäulenpfahlgründung; 40. ursprüngliche Betonventilplatte; 50. Einspritzungsloch der Bettungsbewehrungsschicht (50); 60. Einspritzloch zur Fundamentbewehrung. 11.

Wherein the drawings attached above contain the following markings attached:

• 10. Bedding reinforcement layer, 20. Foundation reinforcement platform, 30. Sub-column pile foundation; 40. original concrete valve plate; 50. Bedding reinforcement layer injection hole (50); 60. Injection hole for foundation reinforcement. 11.

Specific Embodiments

It should be noted that the embodiments and the features in the embodiments of the present application can be combined without conflict. The utility model is described in detail below with reference to the accompanying drawings and in connection with the embodiments.

It should be noted that the following detailed descriptions are for illustrative purposes only and are intended to further clarify the utility model. Unless otherwise specified, all technical and scientific terms used herein have the usual meaning as understood by those skilled in the art to which the utility model pertains.

In the present utility model, orientation terms such as "top, bottom, top, bottom" are commonly used, without specification to the contrary, in reference to the orientation shown in the accompanying drawings or to the component itself in the vertical, perpendicular or gravitational directions; Similarly, for ease of understanding and description, the terms "inside and outside" are used to refer to the inside and outside of the contours of the parts themselves, but the above orientation terms are not used to limit the utility model.

To solve the problem that prior art foundation raising and deflection correction techniques tend to cause secondary settlement damage to the original foundation, the utility model provides an injected composite foundation for building reinforcement and deflection correction.

An injected composite foundation for building reinforcement and deflection correction includes as in 1 and 2 Bedding reinforcement layer 10, foundation reinforcement platform 20 and sub-column pile foundation 30; wherein the bedding reinforcement layer 10 is formed by the original bedding and the solidification of the paste, with the injection hole of the bedding reinforcement layer 50 being away from the ground surface hole extending to the lower surface of the original bedding layer, the paste being injected into the original bedding layer through the injection hole of the bedding reinforcement layer 50;
wherein the foundation reinforcement platform 20 is formed by the original foundation and the solidification of the paste, the foundation reinforcement injection hole 60 extending from the ground surface to the lower surface of the original foundation, the paste being injected into the original foundation through the foundation reinforcement injection hole 60, wherein the foundation reinforcement platform 20 is located below the bedding reinforcement layer 10; wherein at the bottom of the foundation reinforcement platform 20, a plurality of the sub-column pile foundations 30 are provided at intervals, the sub-column pile foundations 30 being formed by solidifying paste injected into the foundation reinforcement injection hole.

By applying the technical solution of the utility model, the original bedding layer and the original foundation are first reinforced by grouting from top to bottom and layer by layer to form a bedding reinforcement layer 10 and a foundation reinforcement platform 20, so that the original building foundation is connected and their structural strength is improved. Then, the soft soil layer below the foundation reinforcement platform is perforated and injected with paste to form a sub-column pile foundation 30, and the building foundation is raised by the supporting force of the sub-column pile foundation 30 to achieve the purpose of deflection correction. During construction work, the bedding reinforcement layer 10, the foundation reinforcement platform 20 and the sub-column pile foundation 30 form a three-dimensional support system through the layered reinforcement. The building foundation is reinforced first, and then the building foundation is raised, thereby realizing the integration of building reinforcement and deflection correction. The aim is to successfully solve the uneven settlement of the building and raise and correct the deviation of the foundation, so that the building foundation achieves the bearing capacity requirements and the range of allowable deviation and avoids secondary settlement damage.

An injected composite foundation for building reinforcement and deflection correction includes as in 2 furthermore an original concrete valve plate 40, the bedding reinforcement layer 10 being located on the underside of the original concrete valve plate 40 and being held together with it by paste. In the prior art, the building bearing capacity mainly relies on the concrete valve plate, but the thickness of the concrete valve plate is small, and the foundation structure at the bottom of the concrete valve plate has a small and uneven bearing capacity, and the concrete valve plate is prone to settlement or fracture. The utility model combines the bedding reinforcement layer 10 and the original concrete valve plate 40 into one unit using paste, which actually effectively increases the overall thickness of the concrete valve plate as well as its load-bearing capacity.

When producing the bedding reinforcement layer 10 and the foundation reinforcement platform 20, the “one-hole-two-pipes” injection method is preferably carried out, i.e. two cast steel pipes, or one short and one long pipe, are installed in a single injection hole, with the short pipe is extended to the lower surface of the original bedding layer for grouting and reinforcement, and the long pipe is extended to a certain depth of the original foundation below the original bedding layer for grouting and reinforcement. The order of construction is: injection first through the short pipe, then through the long pipe, i.e. first the original bedding layer is reinforced, then the original foundation is reinforced layer by layer. This design allows the use of small hole diameters and large hole spacing, which is less destructive to the foundation of the building/structure and saves costs.

As in 1 The sub-column pile foundation 30 penetrates laterally into the soft soil layer below the foundation reinforcement platform 20 by means of the paste to form a tree root shape. The paste laterally penetrated into the soft soil layer below the foundation reinforcement platform 20 forms many “roots” of the sub-column pile foundation 30 in the horizontal direction, which connect with the “vertical main root” of the sub-column pile foundation 30 to form an entirety, thereby reducing the friction between the sub-column pile foundation 30 and the soft soil layer is increased and the load-bearing capacity of the sub-column pile foundation 30 is effectively improved.

As in 1 It is characterized in that the sub-column pile foundation 30 forms an apron ladder shape that gradually increases from top to bottom by controlling the grouting and injection pressure, that is, the sub-column pile foundation 30 is small at the top and large at the bottom, which effectively increases the load-bearing capacity of the sub-column pile foundation 30 improve and prevent the settlement of the sub-column pile foundation 30.

Preferably, sub-column pile foundation 30 is distributed around the supporting columns of the building. Since the supporting column of the building exerts the greatest pressure on the building foundation and this position is the most susceptible to settlement, arranging the sub-column pile foundation 30 around the supporting column of the building increases the structural strength and bearing capacity of the building foundation under the supporting column of the building elevated, seemingly lifting the building's supporting column. Since the supporting column of the building exerts the greatest pressure on the building foundation and this position is the most susceptible to settlement, arranging the sub-column pile foundation 30 around the supporting column of the building increases the structural strength and bearing capacity of the building foundation under the supporting column of the building elevated, seemingly lifting the building's supporting column.

Preferably, the sub-column pile foundation uses the integrated drilling and injection method for layer-by-layer injection and settlement-reinforced jacking, which is characterized by a small hole diameter and a large injection depth. It starts injecting in layers from the upper part to avoid secondary settlement damage, and the paste penetrates more evenly and gently lifts the building foundation through high pressure injection to bring it within the deviation of the design requirements.

• Durch die schichtweise Bewehrung bilden sich die Bettungsbewehrungsschicht 10, die Fundamentbewehrungsplattform 20 und die Untersäulenpfahlgründung 30 ein dreidimensionales Stützsystem. Das Gebäudefundament wird zuerst bewehrt, und dann wird das Gebäudefundament angehoben, wodurch die Integration der Gebäudebewehrung und Durchbiegungskorrektur realisiert wird. Ziel ist es, die ungleichmäßige Setzung des Gebäudes erfolgreich zu lösen und die Abweichung des Fundaments anzuheben und zu korrigieren, so dass das Gebäudefundament die Anforderungen an die Tragfähigkeit und den Bereich der zulässigen Abweichung erreicht.

From the above description, it can be seen that the above embodiment of the utility model achieves the following technical effects:

• Due to the layered reinforcement, the bedding reinforcement layer 10, the foundation reinforcement platform 20 and the sub-column pile foundation 30 form a three-dimensional support system. The building foundation is reinforced first, and then the building foundation is raised, thereby realizing the integration of building reinforcement and deflection correction. The aim is to successfully solve the uneven settlement of the building and raise and correct the deviation of the foundation so that the building foundation achieves the bearing capacity requirements and the range of allowable deviation.

It should be noted that the terms used herein are intended only to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. Unless the context clearly indicates otherwise, the singular form also includes the plural form, and it is further understood that the terms "comprising" and/or "including" used in this description mean the presence of features, steps, steps, devices , components and/or combinations thereof.

In addition, the terms "comprise" and "provided" and all variations in the description and claims of this application are intended to include non-exclusive things, for example, a process, method, system, product or equipment that has a Contains a series of steps or units, is not limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent in those processes, procedures, products or equipment.

The above description is only a preferred embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modification, equivalent substitution, improvement, etc. that corresponds to the spirit and principles of the utility model falls within the scope of protection of the utility model.

Claims (5)

An injected composite foundation for building reinforcement and deflection correction, characterized in that it comprises: a bedding reinforcement layer (10), the bedding reinforcement layer (10) being formed by the original bedding and solidification of the paste, the injection hole of the bedding reinforcement layer (50) being located from the extending the bottom surface hole to the lower surface of the original bedding layer, the paste being injected into the original bedding layer through the injection hole of the bedding reinforcement layer (50); a foundation reinforcement platform (20), the foundation reinforcement platform (20) being formed by the original foundation and the solidification of the paste, the foundation reinforcement injection hole (60) extending from the ground surface to the lower surface of the original foundation, the paste passing through the injection hole for foundation reinforcement (60) is injected into the original foundation, the foundation reinforcement platform (20) being located below the bedding reinforcement layer (10); a sub-column pile foundation (30), whereby on the Underside of the foundation reinforcement platform (20), a plurality of the sub-column pile foundations (30) are provided at intervals, the sub-column pile foundations (30) being formed by solidification of paste which is injected or solidified into the injection hole for the foundation reinforcement. An injected composite foundation for building reinforcement and deflection correction Protection claim 1 , characterized in that the injected composite foundation for building reinforcement and deflection correction is still an original concrete valve plate (40), the bedding reinforcement layer (10) being located on the underside of the original concrete valve plate (40) and being held together with it by paste; An injected composite foundation for building reinforcement and deflection correction Protection claim 2 , characterized in that the sub-column pile foundation (30) penetrates laterally into the soft soil layer below the foundation reinforcement platform (20) by means of the paste to form a tree root shape. An injected composite foundation for building reinforcement and deflection correction Protection claim 3 , characterized in that the sub-column pile foundation (30) forms an apron ladder shape that gradually increases from top to bottom by controlling the grouting and injection pressure. An injected composite foundation for building reinforcement and deflection correction Protection claim 4 , characterized in that the sub-column pile foundation (30) is distributed around the supporting columns of the building.

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