Industrial old factory building foundation reinforcing mechanism
By setting up an anchor connection between the new concrete support and the original foundation support in the old industrial factory buildings, the problems of insufficient bearing capacity and uneven settlement are solved, and efficient reinforcement effects and resource conservation are achieved.
Patent Information
- Application Number
- CN202422627145.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In the prior art, there are problems of insufficient foundation bearing capacity or uneven settlement in the renovation process of old industrial factories, and it is difficult to effectively solve the problem of reinforcement, renovation and construction.
By setting up a new concrete bearing on the original foundation bearing, the new concrete bearing is connected to the original structure column by anchoring the new concrete bearing on the original foundation bearing, and using the new anchor steel bars and through steel bars to connect the new concrete columns with the original structural columns to form a common bearing system and enhance the foundation bearing capacity.
The bearing capacity of the original foundation has been improved, uneven settlement has been avoided, resources have been saved and construction costs have been reduced, and stable reinforcement and transformation measures have been provided.
Smart Images
Figure CN223269291U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building reconstruction, in particular to a foundation reinforcement mechanism for old industrial plants. Background Art
[0002] Renovating old factories not only fully utilizes existing resources and saves energy, but also saves project costs and reduces investment, complying with national policies to improve land use efficiency. However, renovation will increase the load on the original superstructure, causing insufficient foundation bearing capacity or uneven settlement. The original factory foundation needs to be renovated and reinforced. Alternatively, a new factory structure can be added adjacent to the original factory foundation, sharing the foundation with the original factory structure. New concrete caps can be connected to the original foundation caps to share the load. This can achieve good reinforcement effects, make construction quality easier to control, and provide higher technical and economic benefits, effectively utilizing land resources. However, how to strengthen and renovate and how to construct the structure are not known in existing technologies and are urgent technical issues that need to be addressed. Utility Model Content
[0003] The purpose of the present utility model is to overcome the deficiencies of the above-mentioned background technology and to provide a foundation reinforcement mechanism for old industrial plants, which enables the newly added concrete pedestal to be connected to the original foundation pedestal with steel anchors, so that the newly added upper structure load of the original structure and the newly added plant structure load on the adjacent edge can be jointly borne, thereby substantially solving the technical problem of poor bearing capacity or uneven settlement of the original foundation in the renovation of old industrial plants.
[0004] The utility model provides a foundation reinforcement mechanism for an old industrial factory building, comprising an original foundation pedestal and an original structural column arranged on the original foundation pedestal, and also comprising a newly added concrete pedestal, a newly added concrete column, a newly added anchoring steel bar and a newly added through-steel bar; the newly added concrete pedestal and the newly added concrete column are arranged on the side where the original structural column and the original foundation pedestal are cut, the newly added concrete pedestal is anchored to the original foundation pedestal, half of the newly added concrete column is located on the original foundation pedestal and the other half is located on the newly added concrete pedestal, a horizontally arranged newly added anchoring steel bar is provided in the newly added concrete pedestal, the newly added anchoring steel bar is inserted into the original foundation pedestal and anchored to the original foundation pedestal, a horizontal hole is opened in the center of the original structural column and a horizontally arranged newly added through-steel bar is provided in the hole, the hole and the newly added through-steel bar in the hole are connected by a newly added cement slurry structure, newly added through-steel bars are respectively provided on both sides of the original structural column, and the newly added through-steel bars on both sides of the original structural column are welded to the original steel bars in the original structural column.
[0005] In the above technical solution, the anchor connection between the newly added anchor steel bars and the original foundation pedestal means that a hole with a depth of 15 times the diameter of the newly added anchor steel bars is horizontally opened in the original foundation pedestal, and the newly added anchor steel bars are implanted into the hole with a depth of 15 times the diameter of the newly added anchor steel bars and connected by a Class A structural adhesive layer.
[0006] In the above technical solution, a new through-steel bar is provided in the horizontal opening in the center of the original structural column, and a new through-steel bar is provided on each side of the original structural column. The three new through-steel bars are grade 4 steel bars with a diameter of 28 mm.
[0007] In the above technical solution, the newly added cement slurry structure is a 42.5R cement slurry structure.
[0008] In the above technical solution, the newly added concrete cap is a concrete cap with a grade of not less than C25.
[0009] The utility model of the foundation reinforcement mechanism for old industrial plants has the following beneficial effects:
[0010] First, the utility model makes up for the defects of insufficient bearing capacity and uneven settlement of the original foundation by adding a new concrete pedestal; secondly, the new concrete pedestal and the new concrete column jointly bear the load of the new factory building structure on the edge, making full use of the original resources and saving energy; at the same time, under the joint action of the new concrete pedestal and the original foundation pedestal (that is, the new pedestal after reinforcement and transformation), the bearing capacity requirements of the subsequent new structure of the upper factory building are guaranteed, providing good reinforcement and transformation measures and effects for further utilization of industrial factory building space.
[0011] The foundation reinforcement mechanism for old industrial buildings described in the utility model is convenient to construct, requires little work and has a short period of time, has a wide range of applications, does not destroy the integrity of the original structure, and does not affect the use function of the original structure during construction, thereby achieving greater economic and social benefits at a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the foundation reinforcement mechanism for old industrial plants of this utility model;
[0013] Figure 2 for Figure 1 Schematic diagram of the structure of the AA section;
[0014] Figure 3 for Figure 1 Schematic diagram of the results of the middle BB section;
[0015] Figure 4 This is a schematic diagram of the construction and renovation process of the foundation reinforcement mechanism of an old industrial factory building according to the utility model. DETAILED DESCRIPTION
[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.
[0017] See also Figures 1 to 3 , the utility model is a foundation reinforcement mechanism for an old industrial factory building, comprising an original foundation cap 2 and an original structural column 1 arranged on the original foundation cap 2, and also comprising a newly added concrete cap 3, a newly added concrete column 4, a newly added anchoring steel bar 5 and a newly added through steel bar 6; the newly added concrete cap 3 and the newly added concrete column 4 are arranged on the side where the original structural column 1 and the original foundation cap 2 are cut. In one or more embodiments, the newly added concrete cap 3 is a concrete cap with a grade of not less than C25; the newly added concrete cap 3 is anchored to the original foundation cap 1, half of the newly added concrete column 4 is located on the original foundation cap 1 and the other half is located on the newly added concrete cap 3, and a horizontally arranged newly added anchoring steel bar 5 is provided in the newly added concrete cap 3, and the newly added anchoring steel bar 5 is inserted into the original foundation cap 2 and anchored to the original foundation cap 2. In one or more embodiments, the original foundation cap 2, a hole with a depth of 15 times the diameter of the newly added anchoring steel bar 5 is horizontally opened, and the newly added anchoring steel bar 5 is implanted in the hole with a depth of 15 times the diameter of the newly added anchoring steel bar 5 and connected by a Class A structural adhesive layer; the original structural column 1 has a horizontal hole in the center and a horizontally arranged new through-steel bar 6 is provided in the hole. In one or more embodiments, a new through-steel bar 6 with a diameter of 28 mm is provided in the center horizontal hole of the original structural column 1; the hole and the new through-steel bar 6 in the hole are connected by a new cement slurry structure. In one or more embodiments, the new cement slurry structure is a 42.5R cement slurry structure; new through-steel bars 6 are respectively provided on both sides of the original structural column 1. In one or more embodiments, a new through-steel bar 6 with a diameter of 28 mm is respectively provided on both sides of the original structural column 1; the new through-steel bars 6 on both sides of the original structural column 1 are welded to the original steel bars in the original structural column 1.
[0018] See also Figure 4 A method for transforming the foundation reinforcement mechanism of an old industrial plant of the utility model, the transformation steps are as follows:
[0019] Step 1: Based on the original industrial plant foundation layout and the relative position relationship between the original and newly added industrial plants, determine the location where the original structural foundation of the industrial plant needs to be reinforced and renovated, and draw a reinforcement drawing;
[0020] Step 2: Accurately measure the dimensions and determine the specific location of the new concrete cap 3 based on the large-scale drawing, manually clear the earth around the original cap, and statically cut away the original concrete structure along the vertical direction of the column and the horizontal direction of the cap from the central axis. In one or more embodiments, the original concrete structure refers to the second-stage cap 21 of the original foundation cap 2.
[0021] Step 3: When dismantling the original concrete structure, the exposed steel bars of the original structural column 1 and the original foundation pedestal 2 must be protected. It is forbidden to damage the original column bars and stirrups.
[0022] Step 4: According to the double-layer bidirectional reinforcement arrangement elevation position at the height mark on the drawing, the concrete cover layer at the position where the upper and lower double-layer bidirectional reinforcement passes through the original structural column 1 is chiseled out. In one or more embodiments, the height of the chiseled concrete cover layer is controlled to be 50 mm, and the reinforcement arrangement position shown in the drawing is marked;
[0023] Step 5: As shown in the large-scale drawing, the newly added transverse through-steel bar 6 is intersected with the original steel bar of the original structural column 1, and a water drill is used to directional drill a hole in the original structural column 1 for the newly added through-steel bar 6 passing through the center of the original structural column 1. In one or more embodiments, the newly added through-steel bar 6 passing through the center of the original structural column 1 is a Grade 4 steel bar with a diameter of 28 mm, and the diameter of the water drill used for directional drilling is D = 50 mm; after cleaning the residue, the newly added through-steel bar 6 is placed, and additional cement slurry is injected. In one or more embodiments, the newly injected cement slurry is 42.5R cement slurry;
[0024] Step 6: The newly added through-steel bars 6 passing through both sides of the original structural column 1 are effectively welded to the steel bars of the original structural column 1. In one or more embodiments, the newly added through-steel bars 6 passing through the sides of the original structural column 1 are two fourth-grade steel bars with a diameter of 28 mm, and one side of the original structural column 1 corresponds to a newly added through-steel bar 6 with a diameter of 28 mm; the remaining newly added through-steel bars 6 are connected to the original structural column 1 by means of anchoring (the anchoring is a connection technology in which holes are drilled in a concrete foundation, and then anchoring glue and steel bars are added to the holes, and the steel bars are anchored to the concrete by the locking force of the anchoring glue). When the newly added through-steel bars 6 overlap with the original steel bar positions of the original structural column 1 and the original foundation cap 2, the original positions of the newly added through-steel bars 6 are adjusted to one side of the original steel bars;
[0025] Step 7: implanting the newly added anchoring steel bar 5 into the original structural column 1 and pouring structural adhesive. In one or more embodiments, the newly added anchoring steel bar 5 is implanted into the original structural column 1 to a depth of 15d, where d is the diameter of the newly added anchoring steel bar 5. The structural adhesive is a Class A structural adhesive, so that the newly added anchoring steel bar 5 is firmly anchored to the original structural column 1.
[0026] Step 8: Roughen the sidewalls of the contact surface between the original foundation cap 2 and the newly added concrete cap 3 and clean them;
[0027] Step 9: Tie steel bars at the designed position of the new concrete cap 3 on one side of the original foundation cap 2;
[0028] Step 10: Each pedestal is individually formworked and poured in sequence to form a new concrete pedestal 3 and a new concrete column 4. In one or more embodiments, the concrete grade of the new concrete pedestal 3 is not less than C25; the time interval for each pedestal to be individually formworked and poured in sequence is 48 hours.
[0029] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
[0030] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
Claims
1. A foundation reinforcement mechanism for an old industrial plant, comprising an original foundation pedestal (2) and an original structural column (1) arranged on the original foundation pedestal (2), characterized in that: It also includes a newly added concrete cap (3), a newly added concrete column (4), a newly added anchoring steel bar (5) and a newly added through steel bar (6); the newly added concrete cap (3) and the newly added concrete column (4) are arranged on the side where the original structural column (1) and the original foundation cap (2) are cut, the newly added concrete cap (3) is anchored and connected to the original foundation cap, half of the newly added concrete column (4) is located on the original foundation cap and the other half is located on the newly added concrete cap (3), and the newly added concrete cap (3) is provided with a horizontally arranged New anchoring steel bars (5) are added, and the new anchoring steel bars (5) are inserted into the original foundation pedestal (2) and anchored to the original foundation pedestal (2); a horizontal hole is opened in the center of the original structural column (1), and a horizontally arranged new through-steel bar (6) is provided in the hole; the hole and the new through-steel bar (6) in the hole are connected via a new cement slurry structure; new through-steel bars (6) are respectively provided on both sides of the original structural column (1); and the new through-steel bars (6) on both sides of the original structural column (1) are welded to the original steel bars in the original structural column (1).
2. The old industrial building foundation reinforcement mechanism according to claim 1 is characterized in that: The anchor connection between the newly added anchoring steel bar (5) and the original foundation pedestal (2) refers to a hole with a depth of 15 times the diameter of the newly added anchoring steel bar (5) being horizontally opened in the original foundation pedestal (2), and the newly added anchoring steel bar (5) being implanted in the hole with a depth of 15 times the diameter of the newly added anchoring steel bar (5) and connected via a Class A structural adhesive layer.
3. The old industrial building foundation reinforcement mechanism according to claim 2, characterized in that: A newly added through-steel bar (6) is provided in the central horizontal opening of the original structural column (1), and a newly added through-steel bar (6) is provided on each side of the original structural column (1). The three newly added through-steel bars (6) are grade 4 steel bars with a diameter of 28 mm.
4. The old industrial building foundation reinforcement mechanism according to claim 3 is characterized in that: The newly added cement slurry structure is a 42.5R cement slurry structure.
5. The old industrial building foundation reinforcement mechanism according to claim 4, characterized in that: The newly added concrete cap (3) is a concrete cap with a grade not less than C25.