Basement-free beam and slab foundation layered structure
Through layered casting and wooden formwork side-form support structure, the problem of brick membrane vulnerability in traditional beam and slab foundation construction is solved, and an efficient and environmentally friendly construction process is achieved, reducing costs and improving construction quality.
Patent Information
- Application Number
- CN202420859486.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-04-24
AI Technical Summary
In the construction of traditional basement beam and slab foundations, brick membranes are easily damaged, resulting in high construction costs, long removal time and difficult to control quality.
A layered cast basement beam slab foundation structure is adopted, and a beam side mold structure is formed by wooden formwork and side mold support keels. The wooden formwork can be turned around and used. The side mold support keels are fixed by pulling screws to prevent mold expansion and ensure construction quality.
The construction of flow is realized, the work efficiency is improved, the construction period is shortened, the construction cost is reduced, the brick slag pollution is avoided, and the construction quality is ensured.
Smart Images
Figure CN222500316U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building construction structures, and in particular to a layered structure of beam-slab foundation without a basement. Background Art
[0002] In certain buildings without basements that do not require floor waterproofing, we often come across buildings with beam-slab structures as their foundation. In traditional construction, this type of foundation structure often uses a brick membrane as a template. After the template is erected, the beam and slab reinforcement is tied, and finally the beam and slab are cast in one go. Since the brick membrane will be damaged after construction, it cannot be used any longer, resulting in high construction costs, a long time to dismantle, and difficult to control quality. Utility Model Content
[0003] Based on this, it is necessary to provide a layered structure of beam-slab foundation without a basement, including a foundation beam formed by layered casting and a bottom plate arranged on the top of the foundation beam; a beam side formwork structure is provided on the outer periphery of the foundation beam, the beam side formwork structure includes a wooden formwork and a side formwork supporting keel, the side formwork supporting keel structure is arranged on the outer side of the wooden formwork, and the side formwork supporting keel is fixed to the outer side of the wooden formwork by tension screws.
[0004] A construction joint is arranged on the foundation beam.
[0005] The side formwork supporting keel includes a plurality of wooden secondary keels and a double steel tube main keel. The double steel tube main keel is parallel to the wooden formwork. The two ends of the wooden secondary keel are respectively connected to the wooden formwork and the double steel tube main keel, and the plurality of wooden secondary keels are arranged at intervals along the height direction of the wooden formwork.
[0006] Along the height direction of the wooden formwork, a plurality of tension screws are arranged at intervals.
[0007] It also includes a steel pipe auxiliary support. Both sides of the foundation beam are provided with earth cushion layers arranged in a trapezoidal shape that is narrow at the top and wide at the bottom. One side of the earth cushion layer facing the foundation beam is an installation surface. One end of the steel pipe auxiliary support is fixed to the installation surface, and the other end abuts against the side formwork support keel structure.
[0008] A top mold rod is arranged inside the wooden template, and two ends of the top mold rod respectively abut against the inner wall of the wooden template.
[0009] The supporting height of the wooden formwork is the actual height of the foundation beam minus the thickness of the wooden formwork in the wooden formwork frame.
[0010] The foundation beam comprises steel bars, and the wooden formwork is fixedly tied to the steel bars.
[0011] Compared with the prior art, the advantages of the utility model are:
[0012] The utility model provides a layered structure of a beam-slab foundation without a basement, in which the foundation beam and the bottom plate are cast in layers. During construction, the beam side formwork structure is first supported, and then concrete is cast to construct the foundation beam, and then the bottom plate is constructed. This layered construction method can be used for flow construction when multiple beam-slab foundations are required, thereby improving work efficiency and shortening construction period. In the beam side formwork structure, wooden formwork is used to replace traditional brick membranes, and the wooden formwork can be used in a turnover manner, thereby reducing costs and avoiding brick slag generated by brick membrane construction, which is more environmentally friendly. The side formwork support keel is fixed to the outer side of the wooden formwork by tension screws to support the wooden formwork and prevent the formwork from expanding when casting the foundation beam, thereby ensuring construction quality. The beam side formwork structure is easy to disassemble and assemble, and the construction period can be shortened. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the foundation beam in the beam-slab foundation layered structure of an embodiment of the present application;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure after the construction of the beam-slab foundation layered structure of an embodiment of the present application is completed.
[0016] Description of reference numerals:
[0017] 1. Foundation beam; 2. Bottom plate; 3. Wooden formwork; 4. Double steel pipe main keel; 5. Wooden secondary keel; 6. Tension screws; 7. Steel pipe auxiliary support; 8. Earth cushion layer; 9. Construction joint. DETAILED DESCRIPTION
[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0021] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0022] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0024] A layered structure of a beam-slab foundation without a basement, comprising a foundation beam 1 and a bottom plate 2 formed by layered pouring, wherein the bottom plate 2 is arranged on the top of the foundation beam 1; a beam side formwork structure is arranged on the periphery of the foundation beam 1, the beam side formwork structure comprises a wooden formwork 3 and a side formwork supporting keel, which is used to assist in the construction of the foundation beam 1, the side formwork supporting keel structure is arranged on the outer side surface of the wooden formwork 3, and the side formwork supporting keel is fixed to the outer side surface of the wooden formwork 3 by a tension screw 6, which can prevent the formwork from expanding during pouring.
[0025] During construction, the trench of the ground beam is first dug out and then the cushion layer is laid. The foundation beam 1 includes steel bars. First, the beam side formwork structure is set up, the wooden formwork 3 is tied to the steel bars of the foundation beam 1, and the foundation beam 1 is cast to the bottom elevation of the slab at one time. After the concrete has initially set, the side formwork is removed and the center of the room is backfilled. Then the cushion layer of the bottom plate 2 is laid, the plate steel bars are tied, and the bottom plate 2 is cast for the second time. This process will set a horizontal construction joint 9 on the foundation beam 1. After the backfill is completed, the residual soil at the construction joint 9 on the upper part of the beam can be washed clean with a water gun, which can effectively improve the construction quality. Since the beam-slab structure here is the foundation structure, the force direction is vertically downward, perpendicular to the construction joint 9, and this construction joint 9 does not affect the structural performance.
[0026] The layered structure of the beam-slab foundation without a basement, the foundation beam 1 and the bottom plate 2 are cast in layers. During construction, the beam side formwork structure is first set up, and then concrete is poured to construct the foundation beam 1, and then the bottom plate 2 is constructed. This layered construction method can be used for continuous construction when multiple beam-slab foundations are required, thereby improving work efficiency and shortening construction period; in the beam side formwork structure, the traditional brick membrane is replaced by a wooden formwork 3, and the wooden formwork 3 can be used in a turnover manner, thereby reducing costs and avoiding brick slag generated by the construction of the brick membrane, which is more environmentally friendly. The side formwork support keel is fixed to the outer side of the wooden formwork 3 by the tension screw 6 to support the wooden formwork 3 and prevent the formwork from expanding when the foundation beam 1 is cast, thereby ensuring construction quality, and the beam side formwork structure is easy to disassemble and assemble, thereby shortening the construction period.
[0027] In the utility model, the side formwork supporting keel includes a plurality of wooden secondary keels 5 and a double steel tube main keel 4, the double steel tube main keel 4 is parallel to the wooden formwork 3, the wooden secondary keel 5 is located between the double steel tube main keel 4 and the wooden formwork 3, and the two ends of the wooden secondary keel 5 are respectively connected with the double steel tube main keel 4 and the wooden formwork 3, the plurality of wooden secondary keels 5 are arranged at intervals along the height direction of the wooden formwork 3, the connecting screws are passed through the two wooden formworks 3, and the two ends of the connecting screws are abutted against the outer side surfaces of the double steel tube main keels 4.
[0028] In the utility model, a plurality of tension screws 6 are arranged at intervals along the height direction of the wooden formwork 3 to provide large-area uniform support for the wooden formwork 3, thereby preventing the formwork from expanding and affecting the construction quality.
[0029] The utility model also includes a steel pipe auxiliary support 7. Both sides of the beam groove are provided with a trapezoidal earth cushion layer 8 arranged in a narrow upper and wide lower shape. One side of the earth cushion layer 8 arranged toward the foundation beam 1 is the installation surface. One end of the steel pipe auxiliary support 7 is fixed on the installation surface, and the other end abuts against the side formwork support keel to further support the wooden formwork 3.
[0030] In the utility model, a top mold rod is arranged inside the wooden template 3, and both ends of the top mold rod abut against the inner wall of the wooden template 3 respectively, so as to prevent the wooden template 3 from tilting inwards.
[0031] In the utility model, the supporting height of the wooden template is the actual height of the foundation beam 1 minus the thickness of the wooden template 3.
[0032] In this embodiment, the construction steps are as follows:
[0033] 1) First, the foundation earthwork should be excavated. The excavation should follow the flow order, and the vehicle driving and excavation routes should be planned in advance. The elevation measurement should be carried out in advance to determine the excavation depth. After the foundation construction is completed, the beam trench excavation can be carried out. When excavating, attention should be paid to reserving space for workers to operate. After the beam trench excavation is completed, the construction of the beam side formwork structure will begin.
[0034] 2) The wooden formwork 3 is supported in the groove of the beam. The side formwork support keel is fixed to the outside of the wooden formwork 3 by the tension screw 6 to prevent the formwork from expanding. The inside of the wooden formwork 3 is supported by the top formwork rod to prevent the formwork from tilting inward. The two ends of the top formwork rod are respectively against the inner wall of the wooden formwork 3. If the beam is high, a steel pipe auxiliary support 7 is used on the outside to prevent the formwork from overturning. The specific spacing parameters of the keel are determined by material selection and calculation. The template support height is the actual height of the beam minus the plate thickness.
[0035] After the foundation beam 1 is poured, the concrete on the beam surface at the construction joint 9 should be chiseled out, and after the chiseling is completed, the backfilling process in the center of the room will begin.
[0036] 3) In areas close to roads, large excavators are used to directly backfill the center of the house.
[0037] First, use an excavator to backfill the outer core of the house into a soil platform. The height of the soil platform is about 100mm higher than the reserved steel bars of the beam. Then use steel plates to pad the space between the adjacent soil platforms as the driving route of the excavator. The excavator then backfills on both sides along this route.
[0038] During backfill construction, a commander should be appointed to be responsible for directing and supervising the construction to prevent the excavator from damaging the beam reinforcement and structure.
[0039] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A layered structure of beam-slab foundation without basement, characterized in that: It includes a foundation beam formed by layered casting and a bottom plate arranged on the top of the foundation beam; a beam side formwork structure is arranged on the outer periphery of the foundation beam, the beam side formwork structure includes a wooden formwork and a side formwork supporting keel, the side formwork supporting keel structure is arranged on the outer side of the wooden formwork, and the side formwork supporting keel is fixed to the outer side of the wooden formwork by tension screws.
2. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: A construction joint is arranged on the foundation beam.
3. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: The side formwork supporting keel includes a plurality of wooden secondary keels and a double steel tube main keel. The double steel tube main keel is parallel to the wooden formwork. The two ends of the wooden secondary keel are respectively connected to the wooden formwork and the double steel tube main keel, and the plurality of wooden secondary keels are arranged at intervals along the height direction of the wooden formwork.
4. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: A plurality of the tension screws are arranged at intervals along the height direction of the wooden formwork.
5. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: It also includes a steel pipe auxiliary support. Both sides of the foundation beam are provided with earth cushion layers arranged in a trapezoidal shape that is narrow at the top and wide at the bottom. One side of the earth cushion layer facing the foundation beam is an installation surface. One end of the steel pipe auxiliary support is fixed to the installation surface, and the other end abuts against the side formwork support keel structure.
6. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: A top mold rod is arranged inside the wooden template, and two ends of the top mold rod respectively abut against the inner wall of the wooden template.
7. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: The supporting height of the wooden formwork is the actual height of the foundation beam minus the thickness of the wooden formwork in the wooden formwork frame.
8. The basement-free beam-slab foundation layered structure according to claim 1, characterized in that: The foundation beam comprises steel bars, and the wooden formwork is fixedly tied to the steel bars.