A device foundation pre-reserved hole construction structure
By using pre-embedded iron boxes and steel mesh structures in the equipment foundation, the problem of precision control of reserved openings was solved, enabling rapid and efficient construction of the equipment foundation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 五矿二十三冶建设集团有限公司
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-26
AI Technical Summary
In the construction of existing equipment foundations, it is difficult to guarantee the precision control of reserved openings, resulting in slow construction progress, especially in large industrial plants with tight schedules.
Installation openings are set up on the steel mesh and pre-embedded iron boxes are installed. Temporary fixation is achieved through pre-embedded steel bars and connectors. After adjusting the plumbness, permanent fixation is achieved, and anchor steel bars are used to connect with the pre-embedded iron boxes to ensure stability.
This accelerated the construction speed of equipment foundations, improved the accuracy and stability of reserved openings, and ensured construction progress and quality.
Smart Images

Figure CN224413122U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of equipment foundation construction technology, specifically to a construction structure for reserved openings in equipment foundations. Background Technology
[0002] Building construction refers to the production activities during the implementation phase of an engineering project, encompassing the construction process of various types of buildings. The construction process involves the installation of a large amount of equipment. Since equipment foundation construction and equipment installation cannot be carried out simultaneously, holes for installing anchor bolts need to be reserved during equipment foundation construction. These anchor bolts are then used to fix the construction equipment to the equipment foundation.
[0003] In recent years, as industrial plant equipment foundations have become increasingly larger and more numerous, and construction periods have become increasingly tight, it is necessary to improve the existing construction of reserved openings for equipment foundations in order to ensure the accuracy of reserved openings and accelerate the construction progress. Utility Model Content
[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a construction structure for reserved openings in equipment foundations. This application provides the following technical solution:
[0005] The device includes a steel mesh with an installation opening. An embedded iron box is installed in the installation opening. Embedded steel bars are provided on both sides of the embedded iron box for fixing the embedded iron box. Connectors are provided on the embedded steel bars for detachably and fixedly connecting the embedded steel bars to the steel mesh.
[0006] The mounting opening is surrounded by reinforcing bars, which are fixedly connected to the steel mesh.
[0007] The embedded iron box is surrounded by anchors for fixing it.
[0008] The anchor includes anchoring steel bars, and several through holes are provided on the side wall of the pre-embedded iron box. The anchoring steel bars pass through the through holes and extend from both ends of the pre-embedded iron box.
[0009] The two ends of the anchoring steel bar extending from the pre-embedded iron box are of equal length.
[0010] The length of the anchoring steel bar is 4-5 times the width of the embedded iron box.
[0011] A locking element is fixedly installed on the anchoring steel bar, and the locking element is used to abut against the pre-embedded iron box to determine the position of the anchoring steel bar passing through the pre-embedded iron box.
[0012] The perforations are located at both ends of the side wall of the pre-embedded iron box.
[0013] The outer wall of the pre-embedded steel bar is provided with raised grooves to increase friction, so as to clamp and fix the pre-embedded iron box.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0015] By embedding pre-embedded iron boxes as reserved openings within the equipment foundation, the construction speed of the equipment foundation is greatly accelerated. Pre-embedded steel bars and connectors are provided to temporarily fix the pre-embedded iron boxes, facilitating the adjustment of their plumbness. After the pre-embedded iron boxes are adjusted, they can be permanently fixed to enhance their stability. Anchor steel bars are threaded through the pre-embedded iron boxes, allowing them to be anchored within the foundation equipment after the equipment foundation is poured, ensuring the stability of the pre-embedded iron boxes.
[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the construction structure for a reserved opening in the equipment foundation.
[0019] Figure 2 This is a partial enlarged view of the construction structure for a reserved opening in the equipment foundation.
[0020] Figure 3 This is a schematic diagram of reinforcing steel bars for the construction structure of a reserved opening in the equipment foundation.
[0021] Figure 4 This is a top-down view of the construction structure for the reserved opening in the equipment foundation.
[0022] Figure 5 This is a schematic diagram of the installation of anchoring steel bars in the construction structure of a reserved opening in the equipment foundation.
[0023] Attached reference numerals: 1. Reinforcing mesh; 11. Installation opening; 12. Reinforcing steel bar; 2. Embedded iron box; 21. Perforation; 3. Embedded steel bar; 4. Connector; 5. Anchor; 51. Anchoring steel bar; 52. Locking device. Detailed Implementation
[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0027] Please refer to Figure 1-5 As shown, this utility model provides a construction structure for a reserved opening in a foundation: it includes a steel mesh 1, an installation opening 11 on the steel mesh 1, an embedded iron box 2 installed in the installation opening 11, embedded steel bars 3 for fixing the embedded iron box 2 on both sides, and a connector 4 for detachably and fixedly connecting the embedded steel bars 3 to the steel mesh 1.
[0028] Specifically, the connector 4 uses thin steel wire, which is used to tie the pre-embedded steel bar 3 to the steel mesh 1 to achieve detachable fixing.
[0029] Reinforcing steel bars 12 are provided around the installation opening 11, and the reinforcing steel bars 12 are welded to the steel mesh 1. The reinforcing steel bars 12 and the welding method and requirements are reinforced according to the reinforcement measures for floor openings with reinforcing steel bars on pages 101 to 111 of the National Building Standard Design Atlas 16G101-1.
[0030] The embedded iron box 2 is connected around its perimeter by anchors 5 for fixing the embedded iron box 2.
[0031] The anchor 5 includes anchoring steel bars 51. Several through holes 21 are provided on the side wall of the pre-embedded iron box 2. The anchoring steel bars 51 pass through the through holes 21 and extend from both ends of the pre-embedded iron box 2.
[0032] The two ends of the anchoring steel bar 51 extending from the pre-embedded iron box 2 are of equal length.
[0033] The length of the anchoring steel bar 51 is 4-5 times the width of the pre-embedded iron box 2.
[0034] A locking element 52 is fixedly installed on the anchoring steel bar 51. The locking element 52 is used to abut against the pre-embedded iron box 2 to determine the position of the anchoring steel bar 51 passing through the pre-embedded iron box 2.
[0035] The locking element 52 can also be made of thin steel wire. Before the anchoring steel bar 51 is inserted into the through hole 21, the construction personnel should pre-wrap and tie it tightly to the anchoring steel bar 51. When the size of the anchoring steel bar 51 is preferably 4 times the width of the pre-embedded iron box 2, the locking element 52 is tied at 3 / 8 of the anchoring steel bar 51. The end of the anchoring steel bar 51 away from the locking element 52 is inserted into the pre-embedded iron box 2 until the locking element 52 abuts against the side wall of the pre-embedded iron box 2 to restrict the anchoring steel bar 51 from being inserted further. At this time, the length of both ends of the anchoring steel bar 51 extending out of the pre-embedded iron box 2 is 3 / 8, and 1 / 4 of the middle part is located inside the pre-embedded iron box 2.
[0036] The perforation 21 is located at both ends of the side wall of the pre-embedded iron box 2.
[0037] The outer wall of the embedded steel bar 3 is provided with raised grooves to increase friction. Specifically, the embedded steel bar 3 can be made of threaded steel, which has raised grooves on its surface.
[0038] In practice:
[0039] ① Determine the appropriate size and dimensions for pre-embedded iron boxes;
[0040] According to the design drawings and the dimensions of various reserved openings, select the corresponding size and length of the embedded iron box 2. After the statistics table is completed, it should be reviewed and confirmed to be correct before production and procurement can proceed. To ensure accuracy, the size and length of the embedded iron box 2 should be processed and manufactured in a professional workshop or machine repair shop.
[0041] ② Positioning of the embedded iron box axis;
[0042] After the upper layer of reinforcing bars in the reinforcing mesh 1 is tied, the surveyors, after familiarizing themselves with the drawings, measure and mark the installation positions of the embedded iron boxes 2 on the reinforcing mesh 1; and fix the reinforcing mesh 1 to prevent shaking.
[0043] ③ Open the installation port;
[0044] According to the markings of the installation position of the pre-embedded iron box 2, the steel mesh 1 is cut or burned to form the installation opening 11, and then the reinforcing steel bar 12 is used to weld the steel mesh 1 around the installation opening 11 to reinforce it.
[0045] ④ Install and fix the pre-embedded iron box;
[0046] The embedded iron box 2 is inserted into the steel mesh 1 through the installation port 11. Simultaneously, embedded steel bars 3 are installed on both sides of the embedded iron box 2 to clamp it. The embedded steel bars 3 are then fixed to the steel mesh 1 using connectors 4. The elevation and plumbness of the embedded iron box 2 are then measured. If they do not meet the standards, connectors 4 are released to adjust the embedded iron box 2. After adjustment, the embedded steel bars 3 are fixed to the steel mesh 1 again using connectors 4, thus fixing the embedded iron box 2. The elevation and plumbness of the embedded iron box 2 are measured again until they meet the standards. After verification, a professional welder spot welds the embedded iron box 2 to the embedded steel bars 3, ensuring at least two connections between the embedded iron box 2 and the embedded steel bars 3 in the middle. The embedded steel bars 3 are then welded to the steel mesh 1 to ensure that the embedded iron box 2, embedded steel bars 3, and steel mesh 1 are spatially invariant. After welding, the elevation and horizontal displacement are checked again.
[0047] ⑤ Installation of anchoring reinforcement bars;
[0048] The anchoring steel 3 is inserted one by one from the side of the pre-embedded iron box 2 into the through hole 21.
[0049] ⑥ Concrete pouring:
[0050] After installation and acceptance, and once all requirements are met, protective measures should be taken promptly for the openings above all embedded iron boxes 2 to prevent concrete from entering the embedded iron boxes due to improper handling during concrete pouring. In this construction, the protective measures that can be adopted are: wrap the top of the embedded iron box 2 with plastic film. After protection, concrete pouring can be carried out. During pouring, self-compacting pumped concrete should be used, mixed with high-efficiency water-reducing agent to form a fluid state, and the slump should be controlled at 10-14cm. Avoid vigorous vibration around the embedded iron box 2, and strictly prohibit the vibrator from hitting the embedded iron box 2. If necessary, manual vibration with steel bars should be used to ensure that the concrete is vibrated and compacted.
[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A construction structure for a reserved opening in an equipment foundation, characterized in that: The device includes a steel mesh (1), an installation opening (11) on the steel mesh (1), an embedded iron box (2) installed in the installation opening (11), embedded steel bars (3) for fixing the embedded iron box (2) on both sides, and a connector (4) for detachably fixing the embedded steel bars (3) to the steel mesh (1).
2. The construction structure for a reserved opening in a equipment foundation as described in claim 1, characterized in that: The mounting port (11) is surrounded by reinforcing steel bars (12), which are fixedly connected to the steel mesh (1).
3. A device foundation pre-cast pocket construction structure as claimed in claim 1, wherein: The embedded iron box (2) is surrounded by anchors (5) for fixing the embedded iron box (2).
4. A device foundation pre-cast pocket construction structure as claimed in claim 3, wherein: The anchor (5) includes anchoring steel bars (51), and several through holes (21) are provided on the side wall of the pre-embedded iron box (2). The anchoring steel bars (51) pass through the through holes (21) and extend from both ends of the pre-embedded iron box (2).
5. A device foundation pre-cast pocket construction structure as claimed in claim 4, wherein: The two ends of the anchoring steel bar (51) extending from the pre-embedded iron box (2) are of equal length.
6. A device foundation pre-cast pocket construction structure as claimed in claim 4, wherein: The length of the anchoring steel bar (51) is 4-5 times the width of the embedded iron box (2).
7. A device foundation pre-cast pocket construction structure as claimed in claim 4, wherein: A locking element (52) is fixedly installed on the anchoring steel bar (51). The locking element (52) is used to abut against the pre-embedded iron box (2) to determine the position of the anchoring steel bar (51) passing through the pre-embedded iron box (2).
8. A device foundation pre-cast pocket construction structure as claimed in claim 4, wherein: The perforation (21) is located at both ends of the side wall of the pre-embedded iron box (2).
9. A device foundation pre-cast pocket construction structure as claimed in claim 1, wherein: The outer wall of the pre-embedded steel bar (3) is provided with raised textures to increase friction.