A method for later reinforcement of basement slab using deformation joints
By drilling holes and installing semi-circular arc reinforcement ribs on both sides of the deformation joint of the basement floor, the problem of the inability to reinforce the basement floor in the existing technology is solved, and the rapid reinforcement of the basement and structural strength are achieved, which is suitable for emergency repair and economical Sexual needs.
Patent Information
- Application Number
- CN202211693073.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2042-12-28
AI Technical Summary
The deformed joint structure of the existing basement floor needs to be preset during construction, and it cannot be strengthened in the middle and late stages of the existing base plate, and the tensile and compressive effects are limited, making it difficult to meet the urgent repair needs of poor structural strength.
By drilling inverted cylindrical oblique holes on both sides of the deformed joint, and passing through the gravel cushion layer under the joint with semicircular arc reinforcement ribs, the reinforcement ribs are fixed with concrete to enhance the tensile and compressive resistance of the bottom plate and avoid damage Original deformed joint structure.
It achieves rapid and effective reinforcement of the existing basement floor, improves the tensile and compressive resistance of the structure, is suitable for emergency restoration, and is economical and has a wide range of applications.
Smart Images
Figure CN116145985B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of basement construction, in particular to a late reinforcement method for a basement floor using a deformation joint. Background Art
[0002] At present, expansion joints are generally reserved in the construction process of basement slabs to alleviate the deformation of the slab caused by external factors such as settlement and temperature difference of concrete. At present, most of the expansion joints exist in the main layer of the slab, that is, the concrete pouring layer. The existence of expansion joints is equivalent to hollowing out part of the slab. While the slab has the advantage of relieving deformation, it will inevitably weaken its own structural strength.
[0003] The expansion joint on the conventional floor is just a hollow groove, which has no tensile or compressive effect. This is also the structure of most basement floors at present. The latest basement floors will have a special design for the expansion joint structure. For details, please refer to patent CN114016551B, which is used for the water seepage warning expansion joint of the basement floor and its construction method. The expansion joint structure in this patent itself has certain tensile and compressive effects, but its implementation cost is too high, and its tensile and compressive effects are also limited. More importantly, the expansion joint structure needs to be laid out when the basement floor is first constructed. The expansion joint structure cannot be added to the already built basement floor at a later stage. Therefore, its application scenario is limited and cannot be used to strengthen and repair the existing floor with expansion joints.
[0004] Based on the above situation, it is urgent to develop a method for strengthening and repairing existing basement floors with deformation joints, so as to carry out emergency repairs on basement floors with poor structural strength in the later stage. Summary of the invention
[0005] The purpose of the present invention is to provide a method for later reinforcement of basement floors using deformation joints. The present invention can strengthen and repair existing basement floors with deformation joints, and the original deformation joint structure is not destroyed during the strengthening and repair process. The method of the present invention can quickly and effectively reinforce the basement floor, and has high economy and applicability.
[0006] The technical solution of the present invention is a late reinforcement method for a basement floor using a deformation joint. The basement floor comprises a crushed stone cushion layer, a floor main layer and an outer decorative layer arranged in sequence from bottom to top. The floor main layer is provided with a deformation joint. The reinforcement method comprises the following steps:
[0007] Step A, partially peeling off the outer decorative layer on both sides of the deformation joint, exposing the complete deformation joint and the upper surface of the bottom plate main layer on both sides of the deformation joint;
[0008] Step B: drilling a pair of cylindrical inclined holes in an inverted eight-shaped shape from top to bottom on the upper surface of the main layer of the bottom plate on both sides of the deformation joint, respectively recorded as a first cylindrical inclined hole and a second cylindrical inclined hole, and the bottoms of the two cylindrical inclined holes extend into the gravel cushion layer;
[0009] Step C, take a semicircular arc-shaped reinforcement rib, insert one end of the reinforcement rib into the first cylindrical inclined hole, and make the end abut against the inner side wall of the bottom of the first cylindrical inclined hole close to the deformation joint, and at the same time, the inner side wall of the first cylindrical inclined hole away from the deformation joint is tangent to the outer side of the arc of the reinforcement rib, so as to provide support force to the reinforcement rib;
[0010] Step D, taking the circumference of the reinforcing rib after step C as the trajectory circle, hammering one end of the reinforcing rib located outside the first cylindrical inclined hole, and moving one end of the reinforcing rib located inside the first cylindrical inclined hole along the trajectory circle through the gravel cushion layer below the deformation joint into the second cylindrical inclined hole, until the end extends upward from the second cylindrical inclined hole, and keeping both ends of the reinforcing rib lower than the upper surface of the outer decorative layer;
[0011] Step E, pouring concrete into the first cylindrical inclined hole and the second cylindrical inclined hole;
[0012] Step F: refilling the missing part of the outer decorative layer where it is partially peeled off in step A.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses semicircular arc-shaped reinforcement ribs to reinforce the basement floor structure in the later stage. In order to install reinforcement ribs on both sides of the deformation joint, the present invention first provides space for the installation of reinforcement ribs by peeling off the outer decorative layers on both sides of the deformation joint, and models are modeled according to the depth size of the deformation joint before the reinforcement ribs are installed to obtain suitable reinforcement rib size and cylindrical inclined hole position and size, etc.; the first cylindrical inclined hole and the second cylindrical inclined hole are processed by drilling to ensure that the depths of the two inclined holes extend to the gravel cushion layer, so that the reinforcement ribs can be directly implanted across the deformation joint when the reinforcement ribs are installed later.
[0014] In order to facilitate the implantation of the reinforcement bar, the present invention designs a virtual trajectory circle. When one end of the reinforcement bar is against the inner wall of the bottom of the first cylindrical inclined hole close to the deformation joint, and the inner wall of the first cylindrical inclined hole away from the deformation joint is tangent to the outer side of the arc of the reinforcement bar, the circumference of the reinforcement bar is the trajectory circle. Thanks to the support (tangent point) of the inner wall of the first cylindrical inclined hole to the reinforcement bar, after determining the insertion point of the reinforcement bar in the gravel cushion layer, the entire trajectory circle is unique and constant. It is only necessary to hammer the other end of the reinforcement bar to make the reinforcement bar move along the trajectory circle, thereby passing through the gravel cushion layer and entering the second cylindrical inclined hole. When the end of the reinforcement bar extends upward from the second cylindrical inclined hole, the implantation is completed. After pouring with concrete, the reinforcement bar is fixed, and the two side bottom plates separated by the deformation joint can be reconnected. The semicircular arc structure of the reinforcement bar itself can make the bottom plate have better tensile and compressive effects, thereby strengthening the basement bottom plate.
[0015] In addition, since the reinforcing ribs are implanted directly across the deformation joint, the original structure of the deformation joint is not damaged, and the deformation joint can still maintain its function, so that the base plate has better anti-deformation ability.
[0016] The invention generally has a simple and convenient construction process, causes little damage to the original structure of the basement floor, can quickly and effectively reinforce the existing basement floor with deformation joints, and can also perform emergency reinforcement and repair on the basement floor. It has a wide range of applications and high economic value.
[0017] In the aforementioned method for later reinforcement of the basement floor using deformation joints, in step C, the size of the semicircular arc reinforcement rib is selected according to the depth of the deformation joint. Specifically, a point is first selected as the first reference point at a position directly above the deformation joint and lower than the upper surface of the outer decorative layer, and then a point is selected in the gravel cushion layer directly below the deformation joint as the second reference point. The outer diameter of the semicircular arc reinforcement rib is twice the distance between the first reference point and the second reference point. The first reference point is also used as the center of the trajectory circle in step D.
[0018] In the aforementioned method for later reinforcement of a basement floor using a deformation joint, in step B, the drilling positions and inclination degrees of the first cylindrical inclined hole and the second cylindrical inclined hole are selected according to the depth of the deformation joint to ensure that when the reinforcing bar moves along the trajectory circle in step D, the reinforcing bar moves in a circle with the inner side wall of the first cylindrical inclined hole away from the side of the deformation joint as the fulcrum; at the same time, when the reinforcing bar enters the second cylindrical inclined hole, no contact is generated between the reinforcing bar and the inner side wall of the second cylindrical inclined hole.
[0019] In the aforementioned method for later reinforcement of the basement floor using a deformation joint, after taking the semicircular arc-shaped reinforcement rib in step C, a punch is installed at one end of the reinforcement rib, and a pier head is installed at the other end of the reinforcement rib, and one end of the reinforcement rib with the punch installed is pressed against the inner wall of the bottom of the first cylindrical inclined hole close to the deformation joint.
[0020] In the aforementioned method for later reinforcement of basement floors using expansion joints, in step D, the pier head at the end of the reinforcement is hammered multiple times to make it move along a trajectory circle, and the direction of the hammering force is continuously adjusted during the movement of the reinforcement. Specifically, the direction of the hammering force is tangent to the trajectory circle at each hammering.
[0021] In the aforementioned method for later reinforcement of the basement floor using expansion joints, after one end of the punch for installing the reinforcement bar in step D extends upward from the second cylindrical inclined hole, the punches and pier heads at both ends of the reinforcement bar are removed, and then the position of the reinforcement bar is fine-tuned so that the two ends of the reinforcement bar are at the same horizontal height.
[0022] In the aforementioned method for later reinforcement of the basement floor using deformation joints, steps B to E are repeated to add multiple reinforcing ribs in the length direction of the deformation joints. When the reinforcing ribs are fastened by concrete, both ends of each reinforcing rib are at the same level and are lower than the upper surface of the outer decorative layer.
[0023] In the aforementioned method for later reinforcement of the basement floor using deformation joints, a plurality of reinforcing bars are paired in pairs, and each two adjacent reinforcing bars form a pair. A C-shaped auxiliary bar is welded between the ends on the same side of a pair of reinforcing bars, and a total of two C-shaped auxiliary bars are welded to the four ends of a pair of reinforcing bars. The C-shaped opening directions of the two C-shaped auxiliary bars are opposite, and the two C-shaped auxiliary bars are welded into one at the outside of their respective midpoints.
[0024] In the aforementioned method for later reinforcement of the basement floor using deformation joints, when filling the missing external decorative layer in step F, firstly, a decorative strip is installed above the deformation joint to seal it, and then concrete is poured at the location where the external decorative layer is partially peeled off. The pouring height of the concrete is just enough to cover all the C-shaped auxiliary reinforcements. Finally, after the concrete solidifies, a layer of flexible decorative gasket is adhered on top of it.
[0025] In the aforementioned method for later reinforcement of basement slabs using deformation joints, the length of the cylindrical inclined hole in the gravel cushion layer is 15% to 25% of the depth of the deformation joint. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic diagram of the first state during the implantation of reinforcing ribs of the present invention;
[0027] Figure 2 is a schematic diagram of the second state during the implantation of reinforcing ribs of the present invention;
[0028] Figure 3 is a schematic diagram of the third state during the implantation of reinforcing ribs of the present invention;
[0029] Figure 4 is a schematic diagram of a fourth state during the implantation of reinforcing ribs of the present invention;
[0030] Figure 5 It is a schematic diagram of the connection structure between the reinforcing ribs and the C-shaped auxiliary ribs;
[0031] Figure 6 is a schematic diagram of the basement floor structure after being reinforced by the method of the present invention;
[0032] Figure 7 It is a schematic diagram of the structure of the guide cork;
[0033] Figure 8 It is a schematic diagram of the state when the guide wooden plug is inserted into the first cylindrical inclined hole.
[0034] Figure numerals: 1- gravel cushion layer, 2- base plate main layer, 3- outer decorative layer, 4- deformation joint, 5- reinforcing rib, 6- first cylindrical inclined hole, 7- second cylindrical inclined hole, 8- track circle, 9- punch, 10- pier head, 11- C-shaped auxiliary rib, 12- decorative strip, 13- decorative gasket, 14- concrete filling layer, 15- guide wooden plug, 16- guide channel, 151- left half, 152- right half. DETAILED DESCRIPTION
[0035] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0036] Embodiment: A method for later reinforcement of a basement floor with deformation joints. The present invention is applied to an existing basement floor with deformation joints. The basement floor comprises a crushed stone cushion layer 1, a floor main body layer 2 and an outer decorative layer 3 arranged in sequence from bottom to top. The floor main body layer 2 is provided with a deformation joint 4. The reinforcement method comprises the following steps:
[0037] Step A: partially peel off the outer decorative layer 3 on both sides of the deformation joint 4 to expose the complete deformation joint 4 and the upper surface of the bottom plate main body layer 2 on both sides of the deformation joint 4.
[0038] Then the depth of the deformation joint 4, that is, the thickness of the main layer 2 of the bottom plate is measured, and modeling is performed according to the depth dimension of the deformation joint 4 to obtain the size of the reinforcing rib 5 and the position, size, and inclination of the cylindrical inclined hole suitable for the subsequent steps.
[0039] Step B: Drill a pair of inverted eight-shaped cylindrical inclined holes from top to bottom on the upper surface of the bottom plate main layer 2 on both sides of the deformation joint 4, which are respectively recorded as the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7. The bottoms of the two cylindrical inclined holes extend to the inside of the gravel cushion layer 1. The position, size, and inclination of the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 need to be adapted to the subsequent reinforcement ribs 5.
[0040] Step C, take a semicircular arc-shaped reinforcement rib 5, insert one end of the reinforcement rib 5 into the first cylindrical inclined hole 6, and make the end rest against the inner wall of the bottom of the first cylindrical inclined hole 6 close to the deformation joint 4. At the same time, the inner wall of the first cylindrical inclined hole 6 away from the deformation joint 4 is tangent to the outer side of the arc of the reinforcement rib 5, giving the reinforcement rib 5 a supporting force, so that the placement position of the reinforcement rib 5 in the first cylindrical inclined hole 6 is unique, that is, the position of the subsequent trajectory circle 8 is determined.
[0041] Preferably, the length of the cylindrical inclined hole in the gravel cushion layer 1 is 20% of the depth of the deformation joint 4. The design of this size can ensure that the position, size and inclination of the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 are adapted to the reinforcing rib 5. At the same time, the size of the reinforcing rib 5 is not too large, which will not affect its reinforcement and tensile and compressive effects.
[0042] Among them, in step C, the size of the semicircular arc reinforcement rib 5 is selected according to the depth of the deformation seam 4. The size of the reinforcement rib 5 here refers to the outer diameter of the semicircular arc. As for the diameter of the reinforcement rib 5 itself, it can be adaptively selected according to the strength requirements and the width of the deformation seam 4.
[0043] When selecting the size of the semicircular arc reinforcement 5, first select a point just above the deformation joint 4 and below the upper surface of the outer decorative layer 3 as the first reference point, and then select a point in the gravel cushion layer 1 just below the deformation joint 4 as the second reference point. The outer diameter of the semicircular arc reinforcement 5 is twice the distance between the first reference point and the second reference point. The first reference point is also used as the center of the trajectory circle 8 in step D.
[0044] Step D, taking the circle where the reinforcing rib 5 is located after the completion of step C as the trajectory circle 8, hammer the end of the reinforcing rib 5 located outside the first cylindrical inclined hole 6, and move the end of the reinforcing rib 5 located inside the first cylindrical inclined hole 6 along the trajectory circle 8 through the gravel cushion layer 1 under the deformation joint 4 into the second cylindrical inclined hole 7 until the end extends upward from the second cylindrical inclined hole 7, and keep both ends of the reinforcing rib 5 lower than the upper surface of the outer decorative layer 3, so as not to hinder the subsequent filling of the outer decorative layer 3.
[0045] Preferably, after taking the semicircular arc-shaped reinforcement rib 5 in step C, a punch 9 is installed at one end of the reinforcement rib 5, and a pier head 10 is installed at the other end of the reinforcement rib 5. One end of the reinforcement rib 5 with the punch 9 installed is pressed against the inner wall of the bottom of the first cylindrical inclined hole 6 close to the deformation joint 4. The arrangement of the punch 9 and the pier head 10 facilitates the reinforcement rib 5 to pass through the gravel cushion layer 1 under hammering. The punch 9 and the pier head 10 can be sleeved on the end of the reinforcement rib 5 or welded to the end of the reinforcement rib 5.
[0046] Generally speaking, the material of the gravel cushion layer 1 is gravel and foundation soil, which can be used for the end of the reinforcement 5 to pass through. The position, size, and inclination of the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 only need to ensure that when the reinforcement 5 moves along the trajectory circle 8 in step D, the reinforcement 5 moves in a circle with the inner wall of the first cylindrical inclined hole 6 away from the side of the deformation joint 4 as the fulcrum; at the same time, when the reinforcement 5 enters the second cylindrical inclined hole 7, there is no contact between the reinforcement 5 and the inner wall of the second cylindrical inclined hole 7. However, when the material of the gravel cushion layer 1 is relatively hard and the end of the reinforcement 5 cannot pass through easily under hammering, it is necessary to widen the aperture of the first cylindrical inclined hole 6 so that a third-party tool such as a drill bit can enter the first cylindrical inclined hole 6 and loosen the gravel cushion layer 1 below the deformation joint 4 so that the end of the reinforcement 5 can pass through and enter the second cylindrical inclined hole 7.
[0047] Preferably, in step D, the pier head 10 at the end of the reinforcing rib 5 is hammered multiple times to make it move along the trajectory circle 8, and the direction of the hammering force is continuously adjusted during the movement of the reinforcing rib 5. Specifically, the direction of the hammering force is tangent to the trajectory circle 8 at each hammering, ensuring that the reinforcing rib 5 is tangent to the inner wall of the first cylindrical inclined hole 6 away from the deformation joint 4 before each hammering.
[0048] For ease of understanding, Figure 1-Figure 4 The following figure shows the implantation process of the reinforcement rib 5:
[0049] Figure 1 Schematic diagram of the first state of the reinforcing rib 5 during implantation of the present invention, at which the reinforcing rib 5 is just placed in the first cylindrical inclined hole 6, wherein the end of the punch 9 abuts against the inner side wall of the bottom of the first cylindrical inclined hole 6 close to the deformation seam 4, and the reinforcing rib 5 is tangent to the inner side wall of the first cylindrical inclined hole 6 away from the deformation seam 4;
[0050] Figure 2 This is a schematic diagram of the second state of the reinforcing rib 5 during the implantation process of the present invention, at which the end of the reinforcing rib 5 penetrates into the gravel cushion layer 1 from the first cylindrical inclined hole 6 and does not penetrate into the second cylindrical inclined hole 7;
[0051] Figure 3Schematic diagram of the third state of the reinforcing rib 5 during the implantation process of the present invention, at which the reinforcing rib 5 passes through the gravel cushion layer 1 into the second cylindrical inclined hole 7, and at which the reinforcing rib 5 does not contact the inner wall of the second cylindrical inclined hole 7 (except for the passing point);
[0052] Figure 4 This is a schematic diagram of the fourth state during the implantation process of the reinforcing rib 5 of the present invention, that is, the final state of the implantation of the reinforcing rib 5. At this time, the two ends of the reinforcing rib 5 are flush and both are lower than the upper surface of the outer decorative layer 3. It can be seen that at this time, the reinforcing rib 5 still does not contact the inner wall of the second cylindrical inclined hole 7 (except for the penetration point), which means that the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 are not symmetrically arranged relative to the deformation joint 4, but at the same height, the first cylindrical inclined hole 6 is closer to the deformation joint 4 than the second cylindrical inclined hole 7.
[0053] Preferably, after one end of the punch 9 for installing the rib 5 extends upward from the second cylindrical inclined hole 7 in step D, the punches 9 and pier heads 10 at both ends of the rib 5 are removed, and then the position of the rib 5 is fine-tuned so that the two ends of the rib 5 are at the same horizontal height.
[0054] If the punch 9 and the pier head 10 are detachably sleeved on the end of the reinforcing rib 5, they need to be removed. The advantage of the detachable sleeve is that the punch 9 and the pier head 10 can be reused.
[0055] If the punch 9 and the pier head 10 are welded to the end of the reinforcement 5, they need to be cut and filed. The advantage of welding is that the connection stability is high, which facilitates the reinforcement 5 to pass through the gravel cushion layer 1 under hammering.
[0056] Step E: pour concrete into the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7, and tighten the reinforcing bar 5 after the concrete solidifies.
[0057] Repeat steps B to E to add multiple reinforcing ribs 5 in the length direction of the deformation joint 4. When the reinforcing ribs 5 are fastened by concrete, both ends of each reinforcing rib 5 are at the same level and are lower than the upper surface of the outer decorative layer 3, which does not hinder the subsequent filling of the outer decorative layer 3.
[0058] Generally speaking, the depth of the deformation joint 4 of the same basement is constant. When constructing multiple reinforcement ribs 5, the position, size, and inclination of the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 at each position are the same. The size of each reinforcement rib 5 is also the same. Considering that there is a certain error in drilling the first cylindrical inclined hole 6, in order to ensure the accuracy of the reinforcement rib 5 when hammering, a guide plug 15 is usually installed at the hole of the first cylindrical inclined hole 6. The structure of the guide plug 15 can be referred to Figure 7The guide plug 15 is stuck in the opening of the first cylindrical inclined hole 6 and partially inserted into the first cylindrical inclined hole 6. The state of the guide plug when inserted into the first cylindrical inclined hole can be referred to Figure 8 A through arc-shaped guide channel 16 is provided inside the guide plug 15, and the trajectory circle 8 coincides with the center line of the guide channel 16 to ensure the uniqueness of the trajectory circle 8. The inner diameter of the guide channel 16 is slightly larger than the outer diameter of the reinforcement rib 5, while ensuring that the guide channel 16 can be passed by the punch 9.
[0059] In practical applications, when the reinforcing rib 5 enters the second cylindrical inclined hole 7, the guide plug 15 has no substantial effect, and the pier head 10 is too large to pass through the guide channel 16 of the guide plug 15. Therefore, the guide plug 15 needs to be designed as a split structure, which is a structure composed of a left half 151 and a right half 152. The left half 151 and the right half 152 are divided at the guide channel 16, dividing the guide channel 16 into two. Figure 7 When the reinforcing rib 5 enters the second cylindrical inclined hole 7, the guide wooden plug 15 can be pulled out upward, and the left half 151 and the right half 152 can be removed respectively. The removed guide wooden plug 15 can also be reused in the subsequent reinforcing rib 5 implantation process.
[0060] Preferably, the plurality of reinforcing ribs 5 are paired in pairs, and each adjacent two reinforcing ribs 5 form a pair, and a C-shaped auxiliary rib 11 is welded between the ends of the same side of a pair of reinforcing ribs 5, and a total of two C-shaped auxiliary ribs 11 are welded at the four ends of a pair of reinforcing ribs 5, and the C-shaped opening directions of the two C-shaped auxiliary ribs 11 are opposite, and the two C-shaped auxiliary ribs 11 are welded into one at the outside of their respective midpoints. For details, please refer to Figure 5 This structure makes the reinforcement effect of the bottom plate better, and the bottom plate also has good tensile and compressive resistance.
[0061] Step F: refilling the missing part of the outer decorative layer 3 that was partially peeled off in step A.
[0062] First, a decorative strip 12 is installed above the deformation joint 4 to seal it, and then concrete is poured at the partially peeled-off part of the outer decorative layer 3. The pouring height of the concrete is just enough to cover all the C-shaped auxiliary reinforcements 11. Finally, after the concrete solidifies, a layer of flexible decorative gasket 13 is adhered on it. Even if the base plate is deformed again later, the setting of the flexible decorative gasket 13 can ensure that it will not crack.
[0063] The top surface of the decorative strip 12 is flush with the top surface of the decorative gasket 13 , and both are flush with the upper surface of the outer decorative layer 3 .
[0064] The basement floor structure reinforced by the present invention can be referred to Figure 6The structure comprises a gravel cushion layer 1, a base plate main layer 2 and an outer decorative layer 3 which are arranged in sequence from bottom to top, a deformation joint 4 is provided on the base plate main layer 2, and a first cylindrical inclined hole 6 and a second cylindrical inclined hole 7 are provided on both sides of the deformation joint 4, wherein the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 are asymmetrically arranged, and the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7 are filled with concrete; a reinforcing rib 5 passes through the first cylindrical inclined hole 6 and the second cylindrical inclined hole 7, and passes through the gravel cushion layer 1 from below the deformation joint 4, wherein one end of the reinforcing rib 5 abuts against the inner side wall of the bottom of the first cylindrical inclined hole 6 close to the deformation joint 4, and the inner side wall of the first cylindrical inclined hole 6 away from the deformation joint 4 is tangent to the outer side of the arc of the reinforcing rib 5, and the reinforcing rib 5 does not contact the inner side wall of the second cylindrical inclined hole 7, and the two ends of the reinforcing rib 5 are flush, both higher than the base plate main layer 2 and lower than the outer decorative layer 3.
[0065] There are multiple reinforcing ribs 5 and they are evenly arranged along the length direction of the deformation joint 4. The arrangement of the C-shaped auxiliary ribs 11 is not described in detail here. A decorative strip 12 is first arranged at the place where the outer decorative layer 3 is partially peeled off to seal the deformation joint 4. The structures on both sides of the decorative strip 12 are the same, both of which are concrete filling layers 14 and decorative gaskets 13, and the setting height of the concrete filling layer 14 is just enough to cover all the C-shaped auxiliary ribs 11.
[0066] When the deformation joint 4 becomes wider, all the reinforcing ribs 5 cooperate with the C-shaped auxiliary ribs 11 to play a tensile role. When the deformation joint 4 becomes narrower, all the reinforcing ribs 5 cooperate with the C-shaped auxiliary ribs 11 to play a compressive role. No matter how the basement floor is deformed, the structural strength, tensile strength and compressive strength of the reinforced basement floor itself can be improved to a certain extent. The present invention is particularly suitable for the later reinforcement of the floor of an old basement with deformation joints.
[0067] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0068] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A method for later reinforcement of a basement floor using a deformation joint, wherein the basement floor comprises a crushed stone cushion layer, a basement main layer and an outer decorative layer arranged in sequence from bottom to top, and the basement main layer is provided with a deformation joint, characterized in that: The following steps are involved: Step A, partially peeling off the outer decorative layer on both sides of the deformation joint, exposing the complete deformation joint and the upper surface of the bottom plate main layer on both sides of the deformation joint; Step B: drilling a pair of cylindrical inclined holes in an inverted eight-shaped shape from top to bottom on the upper surface of the main layer of the bottom plate on both sides of the deformation joint, respectively recorded as a first cylindrical inclined hole and a second cylindrical inclined hole, and the bottoms of the two cylindrical inclined holes extend into the gravel cushion layer; Step C, take a semicircular arc-shaped reinforcement rib, insert one end of the reinforcement rib into the first cylindrical inclined hole, and make the end abut against the inner side wall of the bottom of the first cylindrical inclined hole close to the deformation joint, and at the same time, the inner side wall of the first cylindrical inclined hole away from the deformation joint is tangent to the outer side of the arc of the reinforcement rib, so as to provide support force to the reinforcement rib; Step D, taking the circumference of the reinforcing rib after step C as the trajectory circle, hammering one end of the reinforcing rib located outside the first cylindrical inclined hole, and moving one end of the reinforcing rib located inside the first cylindrical inclined hole along the trajectory circle through the gravel cushion layer below the deformation joint into the second cylindrical inclined hole, until the end extends upward from the second cylindrical inclined hole, and keeping both ends of the reinforcing rib lower than the upper surface of the outer decorative layer; Step E, pouring concrete into the first cylindrical inclined hole and the second cylindrical inclined hole; Step F: refilling the missing part of the outer decorative layer where it is partially peeled off in step A.
2. The method for later reinforcement of basement floor using deformation joints according to claim 1 is characterized by: In step C, the size of the semicircular arc reinforcement rib is selected according to the depth of the deformation joint. Specifically, a point is first selected as the first reference point just above the deformation joint and below the upper surface of the outer decorative layer, and then a point is selected as the second reference point in the gravel cushion layer just below the deformation joint. The outer diameter of the semicircular arc reinforcement rib is twice the distance between the first reference point and the second reference point. The first reference point is also used as the center of the trajectory circle in step D.
3. The method for later reinforcement of basement floor using deformation joints according to claim 2 is characterized in that: In step B, the drilling positions and inclination degrees of the first cylindrical inclined hole and the second cylindrical inclined hole are selected according to the depth of the deformation joint to ensure that when the reinforcing rib moves along the trajectory circle in step D, the reinforcing rib moves in a circle with the inner side wall of the first cylindrical inclined hole away from the deformation joint as the fulcrum; at the same time, when the reinforcing rib enters the second cylindrical inclined hole, no contact is generated between the reinforcing rib and the inner side wall of the second cylindrical inclined hole.
4. A method for later reinforcement of basement floor using deformation joints according to claim 1, 2 or 3, characterized in that: After taking the semicircular arc-shaped reinforcement rib in step C, a punch is installed at one end of the reinforcement rib, and a pier head is installed at the other end of the reinforcement rib, and one end of the reinforcement rib with the punch installed is pressed against the inner wall of the bottom of the first cylindrical inclined hole close to the deformation seam.
5. The method for later reinforcement of basement floor using deformation joints according to claim 4 is characterized in that: In step D, the pier head at the end of the reinforcement is hammered multiple times to make it move along the trajectory circle. The direction of the hammering force is continuously adjusted during the movement of the reinforcement. Specifically, the direction of the hammering force is tangent to the trajectory circle at each hammering.
6. The method for later reinforcement of basement floor using deformation joints according to claim 5 is characterized in that: After one end of the reinforcement rib installation punch extends upward from the second cylindrical inclined hole in step D, the punches and pier heads at both ends of the reinforcement rib are removed, and the position of the reinforcement rib is fine-tuned so that the two ends of the reinforcement rib are at the same horizontal height.
7. The method for later reinforcement of basement floor using deformation joints according to claim 1 is characterized by: Repeat steps B to E to add multiple reinforcing ribs in the length direction of the deformation joint. When the reinforcing ribs are fastened by concrete, both ends of each reinforcing rib are at the same level and are lower than the upper surface of the outer decorative layer.
8. The method for later reinforcement of basement floor using deformation joints according to claim 7 is characterized in that: A plurality of reinforcing ribs are paired in pairs, and each two adjacent reinforcing ribs form a pair. A C-shaped auxiliary rib is welded between the ends of a pair of reinforcing ribs on the same side. A total of two C-shaped auxiliary ribs are welded to the four ends of a pair of reinforcing ribs. The C-shaped opening directions of the two C-shaped auxiliary ribs are opposite, and the two C-shaped auxiliary ribs are welded into one at the outside of their respective midpoints.
9. The method for later reinforcement of basement floor using deformation joints according to claim 8 is characterized in that: When filling the missing outer decorative layer in step F, first install a decorative strip to seal the deformation joint, then pour concrete at the partially peeled-off part of the outer decorative layer. The pouring height of the concrete is just enough to cover all the C-shaped auxiliary reinforcements. Finally, after the concrete solidifies, adhere a layer of flexible decorative gasket on top of it.
10. The method for later reinforcement of basement floor using deformation joints according to claim 1 is characterized in that: The length of the cylindrical inclined hole in the crushed stone cushion layer is 15% to 25% of the depth of the deformation joint.