CN202925738U - Prefabricated concrete hollow component - Google Patents
Prefabricated concrete hollow component Download PDFInfo
- Publication number
- CN202925738U CN202925738U CN 201220441127 CN201220441127U CN202925738U CN 202925738 U CN202925738 U CN 202925738U CN 201220441127 CN201220441127 CN 201220441127 CN 201220441127 U CN201220441127 U CN 201220441127U CN 202925738 U CN202925738 U CN 202925738U
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- Prior art keywords
- hole
- concrete
- prefabricated concrete
- concrete hollow
- precast
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The utility model relates to a prefabricated concrete hollow component, belonging to the technical field of prefabricated concrete structures. A longitudinal through hole which is parallel to the surface of the prefabricated concrete is formed in the prefabricated concrete, wherein the hole surface is a coarse surface exposed out of aggregates. According to the prefabricated concrete hollow component disclosed by the utility model, the stress performances of the prefabricated concrete structure are improved.
Description
Technical field
The utility model belongs to the precast concrete technical field, and relating in particular to a kind of hole surperficial is the precast concrete hollow unit that exposes the matsurface of aggregate.
Background technology
The primary structure member of precast concrete is made in factory, and production efficiency is high, quality good, and saving resource is conducive to sustainable development.Adopting precast concrete is the industrialization of construction industry developing direction.Precast concrete hollow unit reserving hole in concrete is conducted oneself with dignity little, and easy transportation and installation are used very extensive.
In prior art, concreting in the hole of precast hollow member is used as the vertical applied force member, forms the assembled integral solid construction; The precast hollow member in the construction stage as template and support, combination stressed in operational phase and rear pouring concrete.
The general employing of the hole of existing precast concrete hollow unit is taken out the pipe method and is made, and namely is provided for making the steel pipe internal mold of hole in concrete, before concrete is not yet all tied firmly, extracts the steel pipe internal mold out and forms hollow.During due to the extraction steel pipe, concrete is through-hardening not yet, and the well table surface concrete is more smooth, the binding ability after impact between pouring concrete and precast concrete.
Summary of the invention
The purpose of this utility model is to improve the binding ability of new-old concrete between the interior rear pouring concrete of precast hollow member hole and precast hollow member, improves the stress performance of cast in place and precast construction.
Have several and surperficial parallel longitudinal direction in described precast concrete hollow unit and connect hole, the hole surface is for exposing the matsurface of aggregate.
Have the horizontal hole parallel with the surface in described precast concrete hollow unit.
The described hole cross section is circle, rectangle or polygon etc.
The precast concrete hollow unit that employing the utility model proposes, when rear pouring concrete in hole, the matsurface on hole surface can significantly improve the stress performance of new-old concrete bonding surface, improves the performance of the formed cast in place and precast construction of concreting in hole.Smear concrete surface retarders and delayed concrete final setting time, therefore the concrete in the concrete retarder influence basin of steel pipe internal mold surface is not yet during final set, other part concrete of prefabricated units have reached higher intensity, taking out Guan Buhui causes collapse hole, can not cause the damage of well table surface concrete, guaranteed the quality of precast hollow member hole, greatly convenient construction.
Described precast hollow member includes but not limited to the element types such as precast concrete flat board, T shape wall column, L shaped wall column, cross wall column, trough slab.
Description of drawings
Fig. 1 is precast hollow component template schematic diagram of the present utility model---connect the prefabricated flat board of hole as example to have rounded longitudinal.
In accompanying drawing, 1 is bed die, and 2 is side form, and 3 is backform, and the above has hole, and 4 for be used for to make connecting the steel pipe internal mold of hole, 5 concrete surface retarders of smearing for steel pipe internal mold surface.
The specific embodiment
Below in conjunction with accompanying drawing, as shown in Figure 1, the utility model is described in detail.
(1) on the precast plate production site, adopt bed die 1, side form 2, backform 3 and Duo Gen are used for the steel pipe internal mold 4 of making hole and make template, wherein have the hole identical with the steel pipe geomery on backform.
(2) smear one deck concrete surface retarders 5 on steel pipe internal mold 4 surfaces that be used for to make hole.
(3) bed die 1, side form 2 and backform 3 are combined, arranged the steel mesh reinforcement (not shown), arrange the steel pipe internal mold 4 that scribbles concrete surface retarders 5, the steel pipe internal mold passes the hole of both sides backform 3.
(4) concreting (not shown) in the space that bed die 1, side form 2 and backform 3 form.
(5) extract steel pipe internal mold 4 out after concrete reaches some strength and form holes, water washes away the hole surface and exposes aggregate.
(6) treat that concrete reaches expection intensity and removes bed die, backform, side form forms the precast concrete hollow unit.
Claims (5)
1. a precast concrete hollow unit, have the vertical perforation hole parallel with the surface in it, it is characterized in that, described hole is surperficial for exposing the matsurface of aggregate.
2. precast concrete hollow unit according to claim 1, is characterized in that, has the horizontal hole parallel with the surface in described precast concrete hollow unit.
3. precast concrete hollow unit according to claim 1 and 2, is characterized in that, the described hole cross section is circular.
4. precast concrete hollow unit according to claim 1 and 2, is characterized in that, the described hole cross section is rectangle.
5. precast concrete hollow unit according to claim 1 and 2, is characterized in that, the described hole cross section is polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220441127 CN202925738U (en) | 2012-09-02 | 2012-09-02 | Prefabricated concrete hollow component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220441127 CN202925738U (en) | 2012-09-02 | 2012-09-02 | Prefabricated concrete hollow component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202925738U true CN202925738U (en) | 2013-05-08 |
Family
ID=48215713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220441127 Expired - Fee Related CN202925738U (en) | 2012-09-02 | 2012-09-02 | Prefabricated concrete hollow component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202925738U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669696A (en) * | 2012-09-02 | 2014-03-26 | 初明进 | Hollow precast concrete member and manufacturing method thereof |
| CN112554376A (en) * | 2020-12-23 | 2021-03-26 | 三梁环境技术(山西)有限公司 | Novel lightweight aggregate concrete bearing slat building block and manufacturing method thereof |
-
2012
- 2012-09-02 CN CN 201220441127 patent/CN202925738U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669696A (en) * | 2012-09-02 | 2014-03-26 | 初明进 | Hollow precast concrete member and manufacturing method thereof |
| CN112554376A (en) * | 2020-12-23 | 2021-03-26 | 三梁环境技术(山西)有限公司 | Novel lightweight aggregate concrete bearing slat building block and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150902 |
|
| EXPY | Termination of patent right or utility model |