CN103628616A - Prefabricated concrete hollow member and preparation method thereof - Google Patents
Prefabricated concrete hollow member and preparation method thereof Download PDFInfo
- Publication number
- CN103628616A CN103628616A CN201210304661.4A CN201210304661A CN103628616A CN 103628616 A CN103628616 A CN 103628616A CN 201210304661 A CN201210304661 A CN 201210304661A CN 103628616 A CN103628616 A CN 103628616A
- Authority
- CN
- China
- Prior art keywords
- hole
- steel pipe
- plate face
- longitudinal
- precast
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Panels For Use In Building Construction (AREA)
Abstract
The invention relates to a prefabricated concrete hollow member and a preparation method thereof, and belongs to the technical field of prefabricated reinforced concrete structure members. The prefabricated concrete hollow member comprises a prefabricated panel member, a floorslab member, a T-shaped wall column member, an L-shaped wall column member, a cross-shaped wall column member and a wall member with holes. The wall member with the holes comprises the holes, a coupling beam at the upper portion of the holes and walls on two sides of each hole. Multiple communicated and longitudinal holes are arranged in the prefabricated concrete hollow member along the length direction and are parallel to each other, and multiple non-through horizontal holes are arranged in the prefabricated concrete hollow member along the width direction. Board holes are arranged at the joints of the longitudinal holes and the horizontal holes. The prefabricated concrete hollow member can be applied in a multi-storey and high-rise shear wall building structure and a framework-shear wall construction wall, and therefore industrialization level of a building structure can be improved, stress property is improved, and resource is saved.
Description
Technical field
The present invention relates to a kind of precast concrete hollow unit and preparation method, belong to prefabricated reinforced concrete structure component technology field.
Background technology
In monolithic reinforced concrete structure work progress, field fabrication is many, and wet trade is many, has the intermediate links such as a large amount of form work engineerings, scaffolding work, waste resource, contaminated environment; Practitioner's quality, job site environment etc. are very large on workmanship impact, bring the problems such as building performance, quality and durability.
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, and adopting precast concrete is industrialization of construction industry developing direction.The deadweight of precast concrete hollow unit is little, and easy transportation and installation, apply very extensive.
Concreting in the hole of precast hollow member, as vertical applied force member, is formed to cast in place and precast construction and can build highrise building.In prefabricated assembled concrete structure, between prefabricated units, have horizontal joint, vertical abutment joint etc., the stress performance of seam has determined integrality performance of the structure.Existing precast concrete seam crossing new-old concrete bonding surface is weak link, has affected stress performance, and is easy to cracking, and impact is normally used.
Summary of the invention
The object of the invention is to improve the industrialized level of building structure, solve the deficiency of cast-in-place concrete structure and prefabricated assembling type reinforced concrete structure, a kind of precast concrete hollow unit and preparation method are provided.
The precast concrete hollow unit that the present invention proposes, comprise prefabricated panel member, floor member, T shape wall column component, L wall column component, cross wall column component and band hole wall body construction, described band hole wall body construction comprises hole, top, hole coupling beam, both sides, hole body of wall; It is characterized in that, in described precast hollow member, have along its length longitudinal perforation hole that several are parallel to each other, broad ways have several be communicated with longitudinal hole be parallel to each other laterally do not connect hole, described longitudinal hole and laterally hole intersection arrange plate face hole, and described plate face hole is arranged on a side or the biside plate face of prefabricated units.
Longitudinal hole end of described precast concrete hollow unit arranges plate face hole.
The horizontal hole lengths of described prefabricated units both sides is identical, meets the anchoring requirement of stretching into reinforcing bar wherein; Or the horizontal hole lengths of described prefabricated units one side is to stretch into the twice that the anchoring of reinforcing bar wherein requires, and the horizontal hole lengths of opposite side is to stretch into the anchoring requirement of reinforcing bar wherein; Or the horizontal hole of each side of described prefabricated units is alternately arranged according to above-mentioned two kinds of length length, the length that is the horizontal hole of each side is divided two kinds, a kind of for meeting the anchoring requirement of stretching into reinforcing bar wherein, for the twice that the satisfied anchoring of stretching into reinforcing bar wherein requires, the horizontal hole of two kinds of length is alternately arranged.
Reinforcing bar in described precast hollow member adopts reinforcing cage, and described reinforcing cage comprises a plurality of lateral ties.
Described longitudinal hole cross section is circle or rectangle; Described horizontal hole, plate face hole cross section are circle or rectangle, are preferably square.
Described prefabricated units both sides respectively arrange that longitudinally connects a hole, and each longitudinal hole is connected with several horizontal holes.
Horizontal or longitudinal side embedded bar of described prefabricated units, exposed portions serve is L shaped or U-shaped.
Longitudinal side of described prefabricated units and transverse side are matsurface; Longitudinally hole, horizontal hole, surface, plate face hole are matsurface.
The preparation method of described precast concrete hollow unit, is characterized in that, comprises the following steps: that (1) is on precast plate production site, adopts bed die, backform, and side form and Duo Gen make template for making the length of preformed hole to steel pipe internal mold and short steel pipe internal mold; Wherein backform with on side form, have and long to the steel pipe hole identical with short steel pipe geomery; Part is long has the perforated holes vertical with its axis on steel pipe, and void shape size is identical with short steel pipe.
(2) side form, backform and bed die are combined, arranged steel mesh reinforcement, by how, with the long hole that passes a side backform to steel pipe, pass the gap between two-layer steel mesh reinforcement, through the hole of opposite side backform; To follow short steel pipe through the hole of a side side form, through the gap between two-layer steel mesh reinforcement and long hole on steel pipe more.
(3) concreting in the space that side form, backform and bed die form is extracted short steel pipe out and is formed and laterally do not connect hole after concrete reaches some strength, extracts out longly to steel pipe, to form longitudinal perforation hole.
(4) treat that concrete reaches expection intensity and removes bed die, backform, side form, outputs the precast concrete hollow unit described in plate face hole formation at plate face with perforate machinery.
The present invention compared with prior art has following advantage.
(1) industrialized level is high: precast concrete hollow unit of the present invention is that batch production is produced, and production efficiency is high, quality good, saving resource, be conducive to sustainable development.
(2) standardization level is high: shear wall structure and other body of wall load-carrying members are by plane body of wall, the compositions such as L-type, T-shaped and cross node and hole, floor; Corresponding, according to precast unit preparation method of the present invention, in factory, according to unified specification, structure, make concrete plane wall body construction, plane floor member, band hole wall body construction, and L-type, T-shaped, cross wall column component etc.
(3) transportation, easy for installation.In the prefabricated units that the present invention adopts, have hole, lightweight, easy transportation and installation.
(4) prefabricated units seam is easy to connect, reliable.By arrange reinforcing bar in hole, concreting between hole and prefabricated units, making the rear pouring concrete between longitudinal hole, horizontal hole, plate face hole and prefabricated units is an integral body, improves the reliability connecting between prefabricated units, avoids the problems such as operational phase gaping of joints; The convenient reinforcing bar of arranging in plate face hole, facilitates concreting.
The precast unit that the present invention proposes can be used for floor, roof panel, pipeline top board or base plate, tunnel top board or base plate and other horizontal force members; Can be used for the vertical members such as body of wall, such as shear wall structure or frame shear wall structure body of wall, basement wall, material storage container sidewall, retaining wall, tunnel body of wall, pipeline body of wall etc.
Accompanying drawing explanation
Fig. 1 is the prefabricated planar plate members schematic diagram of the present invention, and 1 is precast concrete hollow unit, and 2 is longitudinally to connect hole, and 3 for laterally not connecting hole, and 4 is plate face hole, and 7 for installing suspension ring.
Fig. 2 is the schematic cross-section in Fig. 1, and prefabricated units side plate face is established plate face hole.
Fig. 3 is the schematic cross-section in Fig. 1, and prefabricated units biside plate face is established plate face hole.
Fig. 4 is the prefabricated planar plate members schematic diagram of the present invention, and member one side arranges two strake face holes.
Fig. 5 is the schematic cross-section in Fig. 4, and prefabricated units side plate face is established plate face hole.
Fig. 6 is the schematic cross-section in Fig. 4, and prefabricated units biside plate face is established plate face hole.
Fig. 7 is the prefabricated planar plate members schematic diagram of the present invention, and longitudinally hole end arranges plate face hole.
Fig. 8 is the prefabricated T shape of the present invention wall column component schematic diagram.
Fig. 9 is the schematic cross-section in Fig. 8.
Figure 10 is the prefabricated L shaped wall column component schematic diagram of the present invention.
Figure 11 is the schematic cross-section in Figure 10.
Figure 12 is the prefabricated cross wall column component schematic diagram of the present invention.
Figure 13 is the schematic cross-section in Figure 12.
Figure 14 is prefabricated band of the present invention hole wall body construction schematic diagram, and 5 is body of wall above hole does not connect hole, and 6 is the perforation hole of body of wall under hole.
Figure 15 is the schematic cross-section in Figure 14.
Figure 16 is the prefabricated units schematic diagram of band side column of the present invention.
Figure 17 is the template schematic diagram of prefabricated units of the present invention, take prefabricated planar plate members as example.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The preparation method of embodiment 1, as Figure 17, comprises the following steps: (1), on precast plate production site, adopts bed die 21, side form 22, and backform 23 and Duo Gen make template for making the length of preformed hole to steel pipe internal mold 24 and short steel pipe internal mold 25; Wherein backform 23 with on side form 22, have and long to steel pipe 24 hole identical with short steel pipe 25 geomeries; Part is long has the horizontal hole vertical with its axis on steel pipe, void shape size is identical with short steel pipe, long have three classes to steel pipe according to the situation of punching, one class has horizontal perforated holes, as having, 241, one classes in Figure 17 laterally do not connect hole, as 242 in Figure 17, one class does not have perforate, as 243 in Figure 17.
(2) bed die 21, side form 22 and backform 23 are combined, arranged steel mesh reinforcement (not shown), by how, with the long hole 26 that passes a side backform to steel pipe 24, pass the gap between two-layer steel mesh reinforcement, through the hole 26 of opposite side backform; By how with short steel pipe 25 through the hole 27 of a side side form, through the gap of two-layer steel mesh reinforcement and some length to the hole 28 on steel pipe.
(3) concreting (not shown) in the space forming at bed die 21, side form 22 and backform 23 is extracted 25 formation of short steel pipe out and is not laterally connected hole 3 after concrete reaches some strength, extracts length out and forms longitudinally perforation hole 2 to steel pipe 24.
(4) treat that concrete reaches expection intensity and removes bed die, backform, side form, outputs plate face hole at plate face with perforate machinery, forms described precast concrete hollow unit.
The preparation method of described precast concrete hollow unit, can be also with by being used for making plate face hole in the long steel pipe internal mold (not shown) arranging perpendicular to the two to steel pipe internal mold 24 and short steel pipe internal mold 25 intersections, form described precast concrete hollow unit.
According to above-mentioned similar method, can produce prefabricated reinforced concrete planar plate members, member one or both sides arrange two row and the two above plate face holes of row, as Fig. 4, Fig. 5, Fig. 6.
According to above-mentioned similar method, can produce prefabricated reinforced concrete planar plate members, longitudinally hole end arranges plate face hole, Fig. 7.
According to above-mentioned similar method, can produce prefabricated reinforced concrete T shape wall column component, L shaped wall column component and cross wall column component, as shown in Fig. 8 ~ Figure 13.In practical application, each limb of wall column component adopts that to adapt to the limb that building structure requires long, and the length of wall column component is generally got the floor height of building, and each limb thickness generally and body of wall uniform thickness.
According to above-mentioned similar method, can produce precast concrete band hole wall body construction, see Figure 14, Figure 15, band hole prefabricated units 1 both sides, hole body of wall has several and longitudinally connects hole 2, be attached thereto the logical hole 3 that laterally do not connect with several, laterally hole is at least connected with a longitudinal hole; Longitudinally hole 2 and horizontal hole 3 intersections arrange plate face hole 4.Top, hole coupling beam has some vertical holes 5 that do not connect, and at the bottom of hole, apart from external surface, is generally not less than 20mm; Bottom, hole body of wall (while having door opening on body of wall, there is no this part body of wall) has the vertical hole 6 of some perforations.On member, be provided with suspension ring 7 are installed.
Prefabricated reinforced concrete band side column wall body construction of the present invention is shown in Figure 16, comprise wallboard and side column, on wallboard, have along its length several and longitudinally connect hole 2, width has that several are parallel to each other does not laterally connect hole 3, and laterally hole at least interconnects with a longitudinal hole; Longitudinally hole 2 and horizontal hole 3 intersections arrange plate face hole 4.On prefabricated units, be provided with suspension ring 7 are installed.
Claims (9)
1. a precast concrete hollow unit, comprise prefabricated panel member, floor member, T shape wall column component, L wall column component, cross wall column component and band hole wall body construction, described band hole wall body construction comprises hole, top, hole coupling beam, both sides, hole body of wall; It is characterized in that, in described precast hollow member, have along its length longitudinal perforation hole that several are parallel to each other, broad ways have several be communicated with longitudinal hole be parallel to each other laterally do not connect hole, described longitudinal hole and laterally one or both sides, hole intersection plate face arrange plate face hole.
2. precast concrete hollow unit according to claim 1, is characterized in that, the one or both sides plate face of described longitudinal hole end arranges plate face hole.
3. precast concrete hollow unit according to claim 1, is characterized in that, the horizontal hole lengths of described prefabricated units both sides is identical, meets the anchoring requirement of stretching into reinforcing bar wherein; Or the horizontal hole lengths of described prefabricated units one side is to stretch into the twice that the anchoring of reinforcing bar wherein requires, and the horizontal hole lengths of opposite side is to stretch into the anchoring requirement of reinforcing bar wherein; Or the horizontal hole of each side of described prefabricated units is alternately arranged according to above-mentioned two kinds of length.
4. described precast concrete hollow unit according to claim 1, is characterized in that, the reinforcing bar in described precast hollow member adopts reinforcing cage, and described reinforcing cage comprises a plurality of lateral ties.
5. precast reinforced concrete structure according to claim 1, is characterized in that, described longitudinal hole cross section is circle or rectangle, and described horizontal hole, plate face hole cross section are circle or rectangle, are preferably square.
6. precast reinforced concrete structure according to claim 1, is characterized in that, described prefabricated units both sides respectively arrange that longitudinally connects a hole, and each longitudinal hole is connected with several horizontal holes.
7. precast reinforced concrete structure according to claim 1, is characterized in that, horizontal or longitudinal side embedded bar of described prefabricated units, and exposed portions serve is L shaped or U-shaped.
8. precast reinforced concrete structure according to claim 1, is characterized in that, longitudinal side of described prefabricated units, transverse side and longitudinal hole surface, horizontal hole surface, surface, plate face hole are matsurface.
9. a preparation method for precast concrete hollow unit, is characterized in that, comprises the following steps:
(1) on precast plate production site, adopt bed die, backform, side form and Duo Gen make template for making the length of preformed hole to steel pipe internal mold and short steel pipe internal mold; Wherein backform with on side form, have and long to the steel pipe hole identical with short steel pipe geomery; Part is long has the perforated holes vertical with its axis on steel pipe, and void shape size is identical with short steel pipe;
(2) side form, backform and bed die are combined, arranged steel mesh reinforcement, by how, with the long hole that passes a side backform to steel pipe, pass the gap between two-layer steel mesh reinforcement, through the hole of opposite side backform; To follow short steel pipe through the hole of a side side form, through the gap between two-layer steel mesh reinforcement and long hole on steel pipe more;
(3) concreting in the space that side form, backform and bed die form is extracted short steel pipe out and is formed and laterally do not connect hole after concrete reaches some strength, extracts out longly to steel pipe, to form longitudinal perforation hole;
(4) treat that concrete reaches expection intensity and removes bed die, backform, side form, outputs the precast concrete hollow unit described in plate face hole formation at plate face with perforate machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304661.4A CN103628616A (en) | 2012-08-24 | 2012-08-24 | Prefabricated concrete hollow member and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304661.4A CN103628616A (en) | 2012-08-24 | 2012-08-24 | Prefabricated concrete hollow member and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103628616A true CN103628616A (en) | 2014-03-12 |
Family
ID=50210038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210304661.4A Pending CN103628616A (en) | 2012-08-24 | 2012-08-24 | Prefabricated concrete hollow member and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628616A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223473A (en) * | 2016-07-29 | 2016-12-14 | 初明进 | A kind of precast reinforced concrete structure method of attachment |
| CN106499116A (en) * | 2016-12-20 | 2017-03-15 | 北京珠穆朗玛绿色建筑科技有限公司 | A kind of concrete prefabricated wallboard and its assembled architecture and method of construction of composition |
| CN106677411A (en) * | 2017-03-10 | 2017-05-17 | 赵东昕 | Long-line method produced prefabricated component and production mold and method for same |
| CN106869333A (en) * | 2017-02-16 | 2017-06-20 | 北京珠穆朗玛绿色建筑科技有限公司 | The shear wall structure and method of construction of prefabricated edge member and preparation method and composition |
| CN107060172A (en) * | 2017-06-12 | 2017-08-18 | 中国航天建设集团有限公司 | Two-way cavity armoured concrete slab with and preparation method thereof |
| CN107916748A (en) * | 2017-12-01 | 2018-04-17 | 沈阳建筑大学 | Hollow type precast concrete interior wall harden structure, making and assembly method |
| CN108532869A (en) * | 2018-03-08 | 2018-09-14 | 重庆卓果节能建材有限公司 | A kind of novel glass bead insulation plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH616194A5 (en) * | 1976-08-05 | 1980-03-14 | Igeco Pontello Prefab | Prefabricated panel intended for the construction of the walls of buildings |
| JPH094118A (en) * | 1995-06-15 | 1997-01-07 | Supankuriito Corp:Kk | Precast concrete plate |
| JPH09165861A (en) * | 1995-12-15 | 1997-06-24 | Penta Ocean Constr Co Ltd | Precast concrete plate and its joining method |
| JPH11286998A (en) * | 1998-04-01 | 1999-10-19 | Asahi Chem Ind Co Ltd | Precast concrete panel and mounting method of precast concrete panel |
| CN101435246A (en) * | 2007-11-12 | 2009-05-20 | 邱则有 | Prefabricated hollow slab |
| CN102061803A (en) * | 2010-11-26 | 2011-05-18 | 清华大学建筑设计研究院 | Shear wall structure building based on cross-hole prefabricated reinforced concrete template and construction method thereof |
| CN201883529U (en) * | 2010-11-26 | 2011-06-29 | 清华大学建筑设计研究院 | Shear wall structure building based on cross-hole prefabricated reinforced-concrete formwork |
| CN102635197A (en) * | 2012-04-27 | 2012-08-15 | 初明进 | Prefabricated reinforced concrete component with grooves and manufacturing method thereof |
| CN202850192U (en) * | 2012-08-24 | 2013-04-03 | 初明进 | Prefabricated concrete hollow member |
-
2012
- 2012-08-24 CN CN201210304661.4A patent/CN103628616A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH616194A5 (en) * | 1976-08-05 | 1980-03-14 | Igeco Pontello Prefab | Prefabricated panel intended for the construction of the walls of buildings |
| JPH094118A (en) * | 1995-06-15 | 1997-01-07 | Supankuriito Corp:Kk | Precast concrete plate |
| JPH09165861A (en) * | 1995-12-15 | 1997-06-24 | Penta Ocean Constr Co Ltd | Precast concrete plate and its joining method |
| JPH11286998A (en) * | 1998-04-01 | 1999-10-19 | Asahi Chem Ind Co Ltd | Precast concrete panel and mounting method of precast concrete panel |
| CN101435246A (en) * | 2007-11-12 | 2009-05-20 | 邱则有 | Prefabricated hollow slab |
| CN102061803A (en) * | 2010-11-26 | 2011-05-18 | 清华大学建筑设计研究院 | Shear wall structure building based on cross-hole prefabricated reinforced concrete template and construction method thereof |
| CN201883529U (en) * | 2010-11-26 | 2011-06-29 | 清华大学建筑设计研究院 | Shear wall structure building based on cross-hole prefabricated reinforced-concrete formwork |
| CN102635197A (en) * | 2012-04-27 | 2012-08-15 | 初明进 | Prefabricated reinforced concrete component with grooves and manufacturing method thereof |
| CN202850192U (en) * | 2012-08-24 | 2013-04-03 | 初明进 | Prefabricated concrete hollow member |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223473A (en) * | 2016-07-29 | 2016-12-14 | 初明进 | A kind of precast reinforced concrete structure method of attachment |
| CN106499116A (en) * | 2016-12-20 | 2017-03-15 | 北京珠穆朗玛绿色建筑科技有限公司 | A kind of concrete prefabricated wallboard and its assembled architecture and method of construction of composition |
| CN106869333A (en) * | 2017-02-16 | 2017-06-20 | 北京珠穆朗玛绿色建筑科技有限公司 | The shear wall structure and method of construction of prefabricated edge member and preparation method and composition |
| CN106869333B (en) * | 2017-02-16 | 2019-11-05 | 北京珠穆朗玛绿色建筑科技有限公司 | The shear wall structure and method of construction of prefabricated edge member and preparation method and composition |
| CN106677411A (en) * | 2017-03-10 | 2017-05-17 | 赵东昕 | Long-line method produced prefabricated component and production mold and method for same |
| CN107060172A (en) * | 2017-06-12 | 2017-08-18 | 中国航天建设集团有限公司 | Two-way cavity armoured concrete slab with and preparation method thereof |
| CN107060172B (en) * | 2017-06-12 | 2023-10-27 | 中国航天建设集团有限公司 | Bidirectional cavity reinforced concrete slab and manufacturing method thereof |
| CN107916748A (en) * | 2017-12-01 | 2018-04-17 | 沈阳建筑大学 | Hollow type precast concrete interior wall harden structure, making and assembly method |
| CN108532869A (en) * | 2018-03-08 | 2018-09-14 | 重庆卓果节能建材有限公司 | A kind of novel glass bead insulation plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202767230U (en) | Assembly integrated shear wall construction structure | |
| CN102635197B (en) | A kind of precast reinforced concrete structure with groove and preparation method thereof | |
| CN103628563B (en) | A kind of hollow precast concrete member and preparation method | |
| CN103669559B (en) | Assembled integral shear wall building structure and construction method | |
| CN102720272B (en) | Embedded column type prefabricated part connection node and manufacturing method thereof | |
| CN202865991U (en) | Assembled monolithic shear wall building structure | |
| CN103628618A (en) | Precast concrete hollow component, and manufacturing method thereof | |
| CN102808450A (en) | Assembled monolithic shear wall building structure and construction method thereof | |
| CN108331158B (en) | On-site connection method of prefabricated reinforced concrete beam column | |
| CN103628616A (en) | Prefabricated concrete hollow member and preparation method thereof | |
| CN101892710B (en) | Structure node for steel girder and reinforced column and construction method thereof | |
| CN103572873B (en) | Assembled integral floor and construction method thereof | |
| CN203452228U (en) | Frame-shear wall architectural structure | |
| CN103572840A (en) | Notch-key type prefabricated member connection node and connection method | |
| CN202866043U (en) | Connection structure of precast concrete walls | |
| CN202831249U (en) | Embedded column type connection joint of prefabricated part | |
| CN102864854A (en) | L-shaped precast concrete wall connection | |
| CN203096923U (en) | Precast concrete hollow member | |
| CN202850192U (en) | Prefabricated concrete hollow member | |
| CN103806593A (en) | Precast concrete member | |
| CN103061410A (en) | House building formed by splicing prefabricated space frame substructures and construction method thereof | |
| CN202672351U (en) | Sunk key type prefabricated component connected node | |
| CN103741809A (en) | Embedded column type prefabricated part connecting method | |
| CN112681612A (en) | High-strength steel concrete cross-shaped column partially prefabricated and assembled | |
| CN102864855B (en) | T-shaped precast concrete wall connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140312 |