Raft plate upper iron fixing structure
By connecting the columns supporting the steel bars to the iron on the raft using a three-way extrusion sleeve, the problem that welding connections may reduce the strength of the main steel bars is solved, and the reduction of the amount of steel bars and the construction cost is achieved.
Patent Information
- Application Number
- CN202421985585.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the prior art, welding of the column supporting the steel bars with the main steel bars of iron on the raft may reduce the strength of the main steel bars, resulting in a decrease in overall load-bearing capacity. At the same time, in order to solve this problem, it is usually necessary to increase the amount of steel bars, resulting in an increase in construction costs.
A three-way extrusion sleeve is used to connect the columns supporting the steel bars to the iron on the raft without welding, avoiding the impact on the strength of the main steel bars and reducing the amount of steel bars used.
Through the design of the three-way extrusion sleeve, a stable connection between the supporting steel column and the iron on the raft is achieved, which avoids the impact on the strength of the main steel bar, and significantly reduces the amount of steel bars and reduces construction costs.
Smart Images
Figure CN222991021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction. More specifically, the utility model is a fixing structure for the upper steel bars of a raft foundation. Background Art
[0002] During the process of floor slab construction, the first step is to build the lower steel bars of the raft foundation, and then build the upper steel bars of the raft foundation. Between the lower steel bars and the upper steel bars of the raft foundation, support steel bars (such as stools) must be placed to ensure the structural stability and bearing capacity. Usually, the distance between adjacent support steel bars is set to 1 meter to meet the design specifications and construction requirements. When fixing the support steel bars to the upper steel bars of the raft foundation, welding is usually used to weld the columns of the support steel bars to the main steel bars of the upper steel bars of the raft foundation. However, this welding connection method may have an adverse effect on the strength of the main steel bars and reduce the overall bearing capacity of the steel bars.
[0003] To avoid the strength impact caused by welding the columns of the support steel bars to the main steel bars of the upper steel bars of the raft foundation, construction workers usually take some remedial measures. As Figure 1 shown, when using the support steel bar 1, a steel bar cross beam 2 is generally welded to the columns at the tops of multiple support steel bars. However, although this method solves the strength problem to a certain extent, it will increase the consumption of steel bars, thereby increasing the construction cost. Summary of the Utility Model
[0004] To solve the technical problem of the increase in the consumption of steel bars caused by welding the steel bar cross beam to the columns of the existing support steel bars, the utility model innovatively provides a fixing structure for the upper steel bars of a raft foundation, which can connect the columns of the support steel bars to the upper steel bars of the raft foundation through a three-way extrusion sleeve without affecting the strength of the main steel bars, without setting a steel bar cross beam, and reducing the consumption of steel bars.
[0005] To achieve the above technical purpose, the utility model discloses a fixing structure for the upper steel bars of a raft foundation, including a three-way extrusion sleeve, the upper steel bars of a raft foundation, and support steel bars. The three-way extrusion sleeve includes a first extrusion sleeve and a second extrusion sleeve. The second extrusion sleeve is vertically fixed in the middle of the outer peripheral wall of the first extrusion sleeve. The inner cavities of the first extrusion sleeve and the second extrusion sleeve are communicated. The first extrusion sleeve is sleeved on the upper steel bars of the raft foundation, and the first extrusion sleeve and the upper steel bars of the raft foundation are fixed by extruding the outer peripheral walls at both ends of the first extrusion sleeve. The second extrusion sleeve is sleeved on the column of the support steel bar, and the second extrusion sleeve and the column are fixed by extruding the outer peripheral wall of the second extrusion sleeve.
[0006] Furthermore, in the fixing structure for the upper steel bars of a raft foundation of the utility model, a first tapered counterbore communicated with its own inner cavity is provided on one end face of the first extrusion sleeve, and a second tapered counterbore communicated with its own inner cavity is provided on the other end face of the first extrusion sleeve.
[0007] Furthermore, for a fixing structure of the upper steel bars of a raft foundation in the present utility model, a third tapered counterbore communicating with its inner cavity is provided on the end face of the second extrusion sleeve.
[0008] Furthermore, for a fixing structure of the upper steel bars of a raft foundation in the present utility model, on the left half of the outer peripheral wall of the first extrusion sleeve, first extrusion indication scale lines are axially spaced at intervals, and on the right half of the outer peripheral wall of the first extrusion sleeve, second extrusion indication scale lines are axially spaced at intervals.
[0009] Furthermore, for a fixing structure of the upper steel bars of a raft foundation in the present utility model, third extrusion indication scale lines are axially spaced at intervals on the outer peripheral wall of the second extrusion sleeve.
[0010] Furthermore, for a fixing structure of the upper steel bars of a raft foundation in the present utility model, the first extrusion indication scale lines, the second extrusion indication scale lines, and the third extrusion indication scale lines all include a plurality of arrow-shaped scale lines arranged at intervals, and the indicating directions of the plurality of arrow-shaped scale lines are the same.
[0011] Furthermore, for a fixing structure of the upper steel bars of a raft foundation in the present utility model, the first extrusion sleeve and the second extrusion sleeve are integrally formed.
[0012] The difference between the present utility model and the prior art lies in that: by providing a three-way extrusion sleeve, upper steel bars of a raft foundation, and supporting steel bars, the three-way extrusion sleeve includes a first extrusion sleeve and a second extrusion sleeve. The second extrusion sleeve is vertically fixed to the middle of the outer peripheral wall of the first extrusion sleeve, so that the inner cavities of the first extrusion sleeve and the second extrusion sleeve communicate. The first extrusion sleeve is sleeved on the upper steel bars of the raft foundation, and the first extrusion sleeve and the upper steel bars of the raft foundation are fixed by extruding the outer peripheral walls at both ends of the first extrusion sleeve. The second extrusion sleeve is sleeved on the column of the supporting steel bars, and the second extrusion sleeve and the column are fixed by extruding the outer peripheral wall of the second extrusion sleeve, thereby forming a fixing structure of the upper steel bars of a raft foundation that can save the usage amount of steel bars. During the actual application process, first lay the lower steel bars and set up a small amount of supporting steel bars, and then when laying the upper steel bars of the raft foundation, calculate the quantity of the three-way extrusion sleeves according to the spacing of the supporting steel bars and sleeve them on the upper steel bars of the raft foundation through the first extrusion sleeve as required. Adjust the distance between adjacent three-way extrusion sleeves according to the original spacing requirement of the supporting steel bars, and then sleeve the three-way extrusion tower on the column of the supporting steel bars through the second extrusion sleeve. Finally, use an electric hydraulic clamp for extrusion and clamping. Therefore, the column of the supporting steel bars can be connected to the upper steel bars of the raft foundation through the three-way extrusion sleeve without affecting the strength of the main bars, without the need to set up steel beam, and reducing the usage amount of steel bars. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of the setting method of the supporting steel bars for the existing upper steel bars of a raft foundation;
[0014] Figure 2 The sectional structural schematic diagram of a fixing structure for the upper steel bars of a raft slab according to the present utility model;
[0015] Figure 3 The sectional structural schematic diagram of a three-way extrusion sleeve in a fixing structure for the upper steel bars of a raft slab according to the present utility model;
[0016] Figure 4 The front view structural schematic diagram of a three-way extrusion sleeve in a fixing structure for the upper steel bars of a raft slab according to the present utility model. Specific embodiments
[0017] The following combines the specification drawings to explain and illustrate in detail a fixing structure for the upper steel bars of a raft slab according to the present utility model.
[0018] As Figure 2 shown, the present utility model provides a fixing structure for the upper steel bars of a raft slab by setting a three-way extrusion sleeve 3, the upper steel bars 4 of the raft slab, and the supporting steel bars 1. The three-way extrusion sleeve 3 includes a first extrusion sleeve 31 and a second extrusion sleeve 32. The second extrusion sleeve 32 is vertically and firmly fixed at the middle position of the outer peripheral wall of the first extrusion sleeve 31. In order to ensure the overall strength of the three-way extrusion sleeve 3, the first extrusion sleeve 31 and the second extrusion sleeve 32 are integrally formed. In this way, the inner cavities of the first extrusion sleeve 31 and the second extrusion sleeve 32 are connected. The first extrusion sleeve 31 is sleeved at an appropriate position on the upper steel bars 4 of the raft slab. By applying pressure, the outer peripheral walls at both ends of the first extrusion sleeve 31 are extruded, so that the first extrusion sleeve 31 and the upper steel bars 4 of the raft slab are fixed together. Similarly, the second extrusion sleeve 32 is sleeved on the column 11 of the supporting steel bar 1, and the second extrusion sleeve 32 and the column 11 are fixed together by extruding the outer peripheral wall of the second extrusion sleeve 32. In this way, a fixing structure for the upper steel bars 4 of the raft slab that saves the usage amount of steel bars and does not affect the structural strength is constructed.
[0019] In the actual construction process, first, it is necessary to lay the lower steel bars of the raft slab and build a small amount of supporting steel bars 1 as a foundation. Subsequently, when laying the upper steel bars 4 of the raft slab, accurately calculate the required number of three-way extrusion sleeves 3 according to the spacing of the supporting steel bars 1, and sleeve these three-way extrusion sleeves 3 on the upper steel bars 4 of the raft slab through the first extrusion sleeve 31. Next, according to the spacing requirements of the supporting steel bars 1, adjust the distance between adjacent three-way extrusion sleeves 3 to ensure their uniform distribution. Then, sleeve the three-way extrusion sleeves 3 on the column 11 of the supporting steel bar 1 through the second extrusion sleeve 32. Finally, use an electric hydraulic fixture for extrusion and clamping operations to ensure that all components are firmly connected together. Through this structure, the column 11 of the supporting steel bar 1 is connected to the upper steel bars 4 of the raft slab through the three-way extrusion sleeve 3, and there is no need to additionally set a steel bar cross beam 2, thus significantly reducing the usage amount of steel bars, saving the material cost, and ensuring the stability and safety of the structure.
[0020] As Figure 3 shown, in an embodiment of the present utility model, on one end face of the first extrusion sleeve 31, a first tapered counterbore 33 communicating with its inner cavity is provided. Similarly, on the other end face of the first extrusion sleeve 31, a second tapered counterbore 34 communicating with the inner cavity is also provided. As for the second extrusion sleeve 32, a third tapered counterbore 35 communicating with its inner cavity is also provided on its end face. Such a setting forms a specific diameter-expanding structure at both ends of the first extrusion sleeve 31 and the end of the second extrusion sleeve 32. The advantage of this structure is that no matter from which end of the first extrusion sleeve 31 the upper iron 4 of the raft slab is inserted, the smoothness of the insertion process can be ensured. The settings of the first tapered counterbore 33 and the second tapered counterbore 34 effectively reduce the alignment difficulty during the insertion process, making the operation more convenient and efficient. In addition, the existence of the third tapered counterbore 35 further optimizes the process of inserting the upright post 11 of the support steel bar 1 into the second extrusion sleeve 32, so that the upright post 11 of the support steel bar 1 can more easily slide into the second extrusion sleeve 32. Through the tapered settings of the first tapered counterbore 33, the second tapered counterbore 34, and the third tapered counterbore 35, the convenience of installation and construction is greatly improved. Such a setting not only improves the work efficiency but also ensures the accuracy and reliability during the construction process.
[0021] As Figure 4 shown, in an embodiment of the present utility model, on the left half of the outer peripheral wall of the first extrusion sleeve 31, a plurality of first extrusion indicating lines 36 are evenly spaced along the axial direction. Similarly, on the right half of the outer peripheral wall of the first extrusion sleeve 31, a plurality of second extrusion indicating lines 37 are also evenly spaced along the axial direction. In addition, on the outer peripheral wall of the second extrusion sleeve 32, a plurality of third extrusion indicating lines 38 are also evenly spaced along the axial direction. The first extrusion indicating lines 36, the second extrusion indicating lines 37, and the third extrusion indicating lines 38 are all composed of a plurality of arrow-shaped lines arranged at intervals, and the directions of these arrow-shaped lines are the same, so as to facilitate users to clearly identify and judge the extrusion degree and direction of the extrusion sleeve, ensuring the accuracy and efficiency of the operation.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model.
[0023] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0024] In the description of this specification, the description with reference to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0026] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A raft iron fixing structure, characterized in that: It includes a three-way extrusion sleeve, a raft iron and supporting steel bars. The three-way extrusion sleeve includes a first extrusion sleeve and a second extrusion sleeve. The second extrusion sleeve is vertically fixed to the middle part of the outer peripheral wall of the first extrusion sleeve. The inner cavities of the first extrusion sleeve and the second extrusion sleeve are connected. The first extrusion sleeve is sleeved on the raft iron, and the first extrusion sleeve and the raft iron are fixed by squeezing the outer peripheral walls at both ends of the first extrusion sleeve. The second extrusion sleeve is sleeved on the column of the supporting steel bars, and the second extrusion sleeve and the column are fixed by squeezing the outer peripheral wall of the second extrusion sleeve.
2. The iron fixing structure on a raft according to claim 1, characterized in that: One end surface of the first extrusion sleeve is provided with a first conical countersunk hole communicating with its own inner cavity, and the other end surface of the first extrusion sleeve is provided with a second conical countersunk hole communicating with its own inner cavity.
3. The iron fixing structure on a raft according to claim 2, characterized in that: The end surface of the second extrusion sleeve is provided with a third conical countersunk hole communicating with the inner cavity thereof.
4. The iron fixing structure on a raft according to claim 3, characterized in that: First extrusion indicating scale lines are provided at intervals along the axial direction on the left half of the outer circumferential wall of the first extrusion sleeve, and second extrusion indicating scale lines are provided at intervals along the axial direction on the right half of the outer circumferential wall of the first extrusion sleeve.
5. The iron fixing structure on a raft according to claim 4, characterized in that: The outer peripheral wall of the second extrusion sleeve is provided with third extrusion indicating scale lines at intervals along the axial direction.
6. The iron fixing structure on a raft according to claim 5, characterized in that: The first extrusion indicating scale line, the second extrusion indicating scale line and the third extrusion indicating scale line all include a plurality of arrow-shaped scale lines arranged at intervals, and the directions indicated by the plurality of arrow-shaped scale lines are consistent.
7. The iron fixing structure on a raft according to claim 6, characterized in that: The first extrusion sleeve and the second extrusion sleeve are integrally formed.