CN115256632A - Prestressed box girder concrete pouring and distributing method - Google Patents
Prestressed box girder concrete pouring and distributing method Download PDFInfo
- Publication number
- CN115256632A CN115256632A CN202210948176.4A CN202210948176A CN115256632A CN 115256632 A CN115256632 A CN 115256632A CN 202210948176 A CN202210948176 A CN 202210948176A CN 115256632 A CN115256632 A CN 115256632A
- Authority
- CN
- China
- Prior art keywords
- concrete
- pouring
- distributing
- vibrating
- vibration
- 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
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 44
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000006872 improvement Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
- B28B1/0935—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material using only elements wholly or partly immersed in the material, e.g. cores
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a prestressed box girder concrete pouring and distributing method, which belongs to the field of concrete pouring and distributing, and comprises the following concrete steps: the method comprises the following steps of (1) carrying out inspection preparation before pouring of a beam plate; (2) installing a steel reinforcement framework, a corrugated pipe and a template; (3) determining the concrete vibrating mode and time; (4) carrying out concrete pouring and distributing; (5) removing the mold and carrying out spray maintenance; (6) Carrying out prestress, grouting and anchor sealing treatment on the concrete; according to the invention, the web concrete cloth is initially integrated when vibrated, so that the problem that an inserted vibrating rod is difficult to insert and vibrate insufficiently due to the fact that the position of a corrugated pipe at the end is higher is solved, the concrete at the vibration falling position is supplemented while auxiliary vibration is performed, and meanwhile, the web concrete cloth is pushed forwards, so that the appearance problems of a water ripple laitance layer or a sand line and the like are avoided, the attachment vibration time is scientifically adjusted according to the change of the concrete falling degree at the site, and the sand line and honeycomb cavities caused by over vibration or insufficient vibration are avoided.
Description
Technical Field
The invention relates to the field of concrete pouring and distributing, in particular to a prestressed box girder concrete pouring and distributing method.
Background
As Yunnan is in the dominant position of the economic center of southeast Asia of south Asia, yunnan enters the highway to construct the tide, the newly constructed high-speed bridge and tunnel has high proportion, and bridge erection is prefabricated beam plates except the interchange area and the special overpass structure, the number of the beam plates is quite large, and the attention of the C50 high-grade concrete is also high. Therefore, the appearance quality is the most basic index in quality engineering construction but the highest examination weight proportion, and the common precast box girder concrete pouring and distributing method at the present stage comprises the steps of longitudinal segmentation and horizontal layering, bottom web chamfering, web plate chamfering, top web plate chamfering and top plate chamfering, and the top plate from one end to the other end. Symmetrically distributing and continuously pouring by using webs on two sides of a distributing machine, and symmetrically performing a horizontal layering process, wherein the thickness of the horizontal layering is not more than 30cm, and adopting an inserted vibrating rod to be matched with a high-frequency vibrator to vibrate. And the vibrating time is the fixed time of setting, does not carry out scientific adjustment according to the concrete state, and this kind of traditional cloth pouring mode leads to the web water ripple to become the general and appearance problem that is difficult to the radical cure of prefabricated box girder. In order to meet the engineering requirements and create quality engineering, a scientific and reasonable cloth pouring method is important;
through retrieval, chinese patent No. CN103643641A discloses a pouring construction method for a prestressed continuous beam bridge girder, which can realize uninterrupted pouring, avoid repeated disassembly and assembly of a conveying pipeline, improve the construction quality, shorten the operation time and reduce the engineering risk, but is easy to cause that an inserted vibrating bar is difficult to insert and insufficiently vibrate due to the higher position of a corrugated pipe at the end, and simultaneously, appearance problems such as a water ripple laitance layer or a sand line and the like occur, and the sand line and honeycomb cavities caused by over-vibration or insufficient vibration exist; therefore, a prestressed box girder concrete pouring and distributing method is provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a prestressed box girder concrete pouring and distributing method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a concrete pouring and distributing method for a prestressed box girder comprises the following concrete steps:
(1) Carrying out inspection preparation before pouring the beam slab;
(2) Installing a steel bar framework, a corrugated pipe and a template;
(3) Determining a concrete vibrating mode and time;
(4) Carrying out concrete pouring and distributing;
(5) Removing the mold and carrying out spray maintenance;
(6) And carrying out prestress, grouting and anchor sealing treatment on the concrete.
As a further scheme of the invention, the specific steps of the examination preparation in the step (1) are as follows:
the method comprises the following steps: the constructor checks and confirms the quantity of raw materials, equipment machines and tools of the mixing plant and the equipment machines and tools used for construction, and the concrete pouring can be continuously and smoothly completed;
step two: strictly measuring the water content of the coarse and fine aggregates, accurately measuring the change of the water content of the coarse and fine aggregates caused by weather change, and checking the grading particle of the coarse aggregates and the fineness modulus of the fine aggregates to ensure the stable construction state of the concrete;
step three: checking the number, the size and the position of the die, the embedded parts, the concrete cushion blocks and the reinforcing steel bars, filling a pouring application form by a technician after the quality is ensured to be qualified, sending the pouring application form to a test room, and issuing a batching sheet to a stirring station by the test room;
step four: the contact surface of the template and the concrete is ensured to be polished completely without other sundries, the release agent is uniformly coated, and no slurry leakage gap exists in the template.
As a further scheme of the present invention, the concrete vibrating manner and time in step (3) are specifically determined as follows:
the first step is as follows: constructors add an attached vibrator to ensure that attached vibrators are uniformly distributed on the full beam length of the webs on the two sides at intervals of about two meters, the position of a diaphragm plate is arranged in a encrypted manner and is opened and pushed forwards section by section along with the pouring progress to ensure that the vibration is sufficient, and then a phi 50 inserted vibrator is equipped to ensure that one of the two webs is arranged at one side and simultaneously vibrates;
the second step is that: through the analysis and the improvement test of the appearance quality condition of the box girder after the early-stage mass pouring data are matched with the form removal, the vibration time of the attached vibrator corresponding to different slump in a certain variation range of the concrete is summarized, and a matching table of different slump and the attached vibration time is generated.
As a further scheme of the invention, concrete pouring and distributing in the step (4) specifically comprises the following steps:
s1.1: distributing materials to and fro within 4-6m from the end of the double-sided web plate, distributing the materials to a first hogging moment tensioning opening, pouring concrete to a lower layer of reinforcing steel bars of the top plate at one time, namely, the reinforcing steel bars exceed the chamfering positions of the web plate and the wing plate, distributing a first bucket material on the left-side web plate, distributing a second bucket material and a third bucket material on the right-side web plate, and stopping distributing the materials to the top plate;
s1.2: the fourth is fought the material and is prepared to the first fill material position of left side web, opens first attached vibrator 20s, the concrete of position is fought to roof lower floor reinforcing bar position to the while filling up that shakes during the period, it impels to fill 2-3m within ranges forward to one side after filling up, the fifth is fought the material and the third fill material position preparation to right side web second, open and attach and shake, the concrete of position is fought to roof lower floor reinforcing bar position to the while filling up that shakes, the sixth is fought and is traded to left side web position and alternately impeld forward in proper order and vertically pour.
As a further scheme of the invention, the longitudinal casting in S1.2 comprises the following specific steps:
s2.1: the beam top is matched with a bilateral inserted vibrating spear, the vibrating spear is inserted into the position of the corrugated pipe for vibrating, but the vibrating spear is not always pushed onto the corrugated pipe for vibrating, and the vibrating spear continuously moves up and down during vibrating until concrete does not obviously sink and the surface slurry is flat any more, and the vibrating spear stops immediately without bubble;
s2.2: and reversely folding the two ends 4-6m away from the other end by the same method, vibrating the concrete of the web plate to the state and position required by constructors, and then stopping vibrating, and finally pouring and forming the top plate longitudinally at one time.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional pouring and distributing method, the pouring and distributing method for the prestressed box girder concrete determines the concrete vibrating mode and time through continuous tests of constructors, then the constructors start to distribute the material to the first hogging moment tensioning opening position in a range of 4-6m from the end of the double-sided web, then pour the concrete to the lower layer reinforcing steel bar of the top plate at one time, namely, the position exceeds the chamfering positions of the web and the wing plate, the left-sided web is firstly distributed with a first bucket material, the right-sided web is distributed with a second bucket material and a third bucket material, the material distribution is stopped after the material is distributed to the position of the top plate, the fourth bucket material is prepared to the position of the first bucket material of the left-sided web, the first attached vibrator is started for 20s, the concrete at the vibration falling position is filled to the position of the lower layer reinforcing steel bar of the top plate during the period, the material is obliquely pushed forward in a range of 2-3m after being distributed, the fifth bucket material is prepared to the position of the second bucket material and the third bucket material of the right-sided web, opening the auxiliary vibration, filling the concrete at the vibration falling position to the lower layer steel bar position of the top plate while vibrating, changing the sixth hopper to the left web plate position, sequentially and alternately advancing, matching the beam top with the double-side inserted vibrating rods, inserting the vibrating rods to the corrugated pipe position for vibrating, not always pushing the corrugated pipe for vibrating, continuously moving the vibrating rods up and down during vibration until the concrete does not obviously sink, the surface slurry is flat, no air bubbles are generated, immediately stopping the vibration, reversely folding the vibrating rods in the same way when the distance from the other end is 4-6m, stopping the vibrating when the web plate concrete is vibrated to the state and position required by a constructor, finally longitudinally pouring and forming the top plate at one time, solving the problem that the inserted vibrating rods are difficult to insert and vibrate insufficiently due to the high position of the corrugated pipe at the end by making the web plate concrete cloth into a whole in the initial state when vibrating, filling the concrete at the vibration falling position while opening the auxiliary vibration, meanwhile, the concrete is pushed forward, the appearance problems of a water ripple floating slurry layer or a sand line and the like are avoided, the attachment type vibration time is scientifically adjusted according to the change of the slump of the concrete on site, and the sand line and the honeycomb holes caused by over-vibration or insufficient vibration are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flow chart of a prestressed box girder concrete pouring and distributing method provided by the invention;
FIG. 2 is a process flow diagram of a prestressed box girder concrete pouring and distributing method provided by the invention;
fig. 3 is a pouring schematic diagram of a prestressed box girder concrete pouring and distributing method provided by the invention.
Detailed Description
Referring to fig. 1-3, the concrete pouring and distributing method for the prestressed box girder comprises the following specific steps:
carrying out inspection preparation before pouring the beam slab;
specifically, constructors check and confirm the quantity of raw materials, equipment machines and tools of a mixing station and equipment machines and tools used for construction, ensure that concrete pouring can be continuously and smoothly completed, strictly measure the water content of coarse and fine aggregates, accurately measure the change of the water content of the coarse and fine aggregates caused by weather change, check the coarse aggregate gradation grain composition and the fine aggregate fineness modulus, ensure that the concrete construction state is stable, check the quantity, the size and the position of a mould, an embedded part, a concrete cushion block and a reinforcing steel bar, fill a pouring application form by technicians after the quality is qualified, send the pouring application form to a test room, issue a batching list to the mixing station by the test room, and then ensure that the contact surface of a template and the concrete is completely polished, the release agent is uniformly coated without other impurities, and no slurry leakage gap exists in the template.
Installing a steel bar framework, a corrugated pipe and a template, and determining the concrete vibrating mode and time;
specifically, constructor adds the attached vibrator, guarantee evenly to lay the attached vibrator on the full roof beam length of two side webs, lay about two meters at the interval, the setting is encrypted to diaphragm position department, open along with pouring the progress and impel forward section by section, guarantee to vibrate fully, later be equipped with phi 50 bayonet vibrating spear and guarantee two webs one on one side, vibrate simultaneously, through pour the analysis of box girder appearance quality condition and the improvement experiment behind the data cooperation form removal in a large number in earlier stage, summarize the attached vibrator vibration time that different slump degrees correspond in the concrete certain range of variation, and generate different slump degrees and attach the time matching table that shakes.
It should be further explained that the matching table of different slump and the attached vibration time is as follows:
constructors can flexibly deal with the fluctuation of the concrete slump during pouring through the table, and scientifically carry out vibration operation according to the fluctuation.
And (6) carrying out concrete pouring and distributing.
Specifically, as shown in fig. 2-3, a constructor starts to distribute materials to and fro within a range of 4-6m from an end head, the materials are distributed to a first hogging moment tensioning opening position, then the concrete is poured to a lower layer reinforcing steel bar of a top plate at one time, namely, the chamfer positions of the web plate and a wing plate are exceeded, a left side web plate is firstly distributed with a first hopper material, a right side web plate is distributed with a second hopper material and a third hopper material, the materials are distributed to the top plate position and then stopped to avoid attaching a slurry water ripple layer at the bottom of the web plate, which is caused by vibration after each hopper is discharged in a layering mode, a fourth hopper material is prepared to the first hopper material position of the left side web plate, a first attached vibrator 20s is started, the concrete at the vibration position is filled to the lower layer reinforcing steel bar position of the top plate while vibrating, the concrete is pushed obliquely forward within a range of 2-3m after the hopper is filled, a fifth hopper material is prepared to the second hopper material and the third hopper material position, the hopper material is prepared, the vibration lines are pushed forward while the vibration is not enough to fill the concrete at the vibration position to fill the vibration position of the right side web plate, the vibration position to avoid the concrete to be filled with the concrete to be filled to the vibration position to the concrete at the vibration position to be filled to the lower layer while the vibration line, the vibration line is pushed forward, the vibration line, the concrete is adjusted forward, the concrete is adjusted, the vibration line is adjusted forward, the vibration line, the problem that the vibration line is solved, the problem that the vibration line is not enough, the vibration line is solved, the vibration line is not enough, the vibration line is solved, and the vibration line is solved.
It needs further to be explained that the beam top is matched with a bilateral insertion type vibrating rod, the vibrating rod is inserted into the position of the corrugated pipe for vibrating, but the vibrating rod is not always pushed to the corrugated pipe for vibrating, the vibrating rod continuously moves up and down during vibrating until concrete does not obviously sink and surface slurry is flat, bubbles do not spread, the vibrating rod is immediately stopped, then the vibrating rod is reversely folded in a method 4-6m away from the other end so as to avoid the concrete of the other end from lacking aggregate, the uniformity of the integral aggregate grading of the box girder is ensured, the vibrating is stopped after the web plate concrete is vibrated to the state and position required by constructors, and finally the top plate is longitudinally cast and formed at one time.
In addition, it needs to be further explained that concrete vibration at the hogging moment tensioning opening of the top plate needs to be noticed when the top plate is poured, so that a tensioning opening groove formwork is guaranteed not to move, and a notch is prevented from floating upwards or concrete is prevented from being poured into a groove.
Removing the mold and carrying out spray maintenance; and carrying out prestress, grouting and anchor sealing treatment on the concrete.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The concrete pouring and distributing method for the prestressed box girder is characterized by comprising the following concrete steps:
(1) Carrying out inspection preparation before pouring the beam slab;
(2) Installing a steel bar framework, a corrugated pipe and a template;
(3) Determining a concrete vibrating mode and time;
(4) Carrying out concrete pouring and distributing;
(5) Removing the mould and carrying out spray maintenance;
(6) And (3) carrying out prestress, grouting and anchor sealing treatment on the concrete.
2. The method for pouring and distributing the prestressed box girder concrete according to claim 1, wherein the concrete inspection preparation in step (1) comprises the following steps:
the method comprises the following steps: the constructor checks and confirms the quantity of raw materials, equipment machines and tools of the mixing plant and the equipment machines and tools used for construction, and the concrete pouring can be continuously and smoothly completed;
step two: strictly measuring the water content of the coarse and fine aggregates, accurately measuring the change of the water content of the coarse and fine aggregates caused by weather change, checking the grading particle composition of the coarse aggregates and the fineness modulus of the fine aggregates, and ensuring the stable construction state of the concrete;
step three: checking the number, the size and the position of the die, the embedded part, the concrete cushion block and the reinforcing steel bar, filling a pouring application form by a technician after the quality is qualified, sending the pouring application form to a test room, and issuing a batching list to a mixing station by the test room;
step four: the contact surface of the template and the concrete is ensured to be polished completely without other sundries, the release agent is uniformly coated, and no slurry leakage gap exists in the template.
3. The method for pouring and distributing the concrete of the prestressed box girder according to claim 1, wherein concrete vibrating manner and time in the step (3) are specifically determined as follows:
the first step is as follows: constructors add an attached vibrator to ensure that attached vibrators are uniformly distributed on the whole beam length of the two side webs at intervals of about two meters, the position of a diaphragm plate is arranged in a encrypted manner, the diaphragm plate is opened and pushed forward section by section along with the pouring progress to ensure that the vibration is sufficient, and then a phi 50 insertion type vibrator is equipped to ensure that one web is arranged on one side of the two webs and the two webs are vibrated simultaneously;
the second step is that: through the analysis and the improvement test of the appearance quality condition of the box girder after the early-stage mass pouring data are matched with the form removal, the vibration time of the attached vibrator corresponding to different slump in a certain variation range of the concrete is summarized, and a matching table of different slump and the attached vibration time is generated.
4. The method for distributing the prestressed box girder through concrete pouring according to claim 1, wherein the concrete pouring and distributing in the step (4) comprises the following concrete steps:
s1.1: distributing materials to and fro within 4-6m from the end of the double-sided web plate, distributing the materials to a first hogging moment tensioning opening, pouring concrete to a lower layer of reinforcing steel bars of the top plate at one time, namely, the reinforcing steel bars exceed the chamfering positions of the web plate and the wing plate, distributing a first bucket material on the left-side web plate, distributing a second bucket material and a third bucket material on the right-side web plate, and stopping distributing the materials to the top plate;
s1.2: the fourth is fought the material and is prepared to the first fill material position of left side web, opens first attached vibrator 20s, the concrete of position is fought to roof lower floor reinforcing bar position to the while filling up that shakes during the period, it impels to fill 2-3m within ranges forward to one side after filling up, the fifth is fought the material and the third fill material position preparation to right side web second, open and attach and shake, the concrete of position is fought to roof lower floor reinforcing bar position to the while filling up that shakes, the sixth is fought and is traded to left side web position and alternately impeld forward in proper order and vertically pour.
5. The method for pouring and distributing the prestressed box girder concrete according to claim 4, wherein the longitudinal pouring in S1.2 comprises the following specific steps:
s2.1: the beam top is matched with a bilateral inserted vibrating spear, the vibrating spear is inserted into the position of the corrugated pipe for vibrating, but the vibrating spear is not always pushed onto the corrugated pipe for vibrating, and the vibrating spear continuously moves up and down during vibrating until concrete does not obviously sink and the surface slurry is flat any more, and the vibrating spear stops immediately without bubble;
s2.2: and the distance between the two ends is 4-6m, the two ends are reversely folded by the same method, the web concrete stops vibrating after being vibrated to the state and the position required by constructors, and finally the top plate is longitudinally cast and formed at one time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948176.4A CN115256632A (en) | 2022-08-09 | 2022-08-09 | Prestressed box girder concrete pouring and distributing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948176.4A CN115256632A (en) | 2022-08-09 | 2022-08-09 | Prestressed box girder concrete pouring and distributing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115256632A true CN115256632A (en) | 2022-11-01 |
Family
ID=83750041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210948176.4A Pending CN115256632A (en) | 2022-08-09 | 2022-08-09 | Prestressed box girder concrete pouring and distributing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115256632A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118288386A (en) * | 2024-06-06 | 2024-07-05 | 中铁四局集团有限公司 | Prefabricated box Liang Liangmian cloth vibration integrated intelligent integrated control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR33057E (en) * | 1926-12-08 | 1928-06-12 | Method of establishing pavements, rafts and other coverings | |
| CN104859049A (en) * | 2011-08-12 | 2015-08-26 | 朱月琴 | Pre-stressed concrete solid square pile production device |
| CN105666687A (en) * | 2015-12-30 | 2016-06-15 | 中交一公局桥隧工程有限公司 | Construction process for pre-stress reactive powder concrete box girder |
| CN108951425A (en) * | 2018-07-12 | 2018-12-07 | 宁波市建设集团股份有限公司 | Cast-in-situ prestressed concrete continuous box girder primary concreting molding construction method |
| CN113601699A (en) * | 2021-09-06 | 2021-11-05 | 中铁二十二局集团第二工程有限公司 | Prefabrication method of 40m simply supported box girder |
-
2022
- 2022-08-09 CN CN202210948176.4A patent/CN115256632A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR33057E (en) * | 1926-12-08 | 1928-06-12 | Method of establishing pavements, rafts and other coverings | |
| CN104859049A (en) * | 2011-08-12 | 2015-08-26 | 朱月琴 | Pre-stressed concrete solid square pile production device |
| CN104924452A (en) * | 2011-08-12 | 2015-09-23 | 朱月琴 | Tension pile splicing device for prestressed concrete solid square pile |
| CN105666687A (en) * | 2015-12-30 | 2016-06-15 | 中交一公局桥隧工程有限公司 | Construction process for pre-stress reactive powder concrete box girder |
| CN108951425A (en) * | 2018-07-12 | 2018-12-07 | 宁波市建设集团股份有限公司 | Cast-in-situ prestressed concrete continuous box girder primary concreting molding construction method |
| CN113601699A (en) * | 2021-09-06 | 2021-11-05 | 中铁二十二局集团第二工程有限公司 | Prefabrication method of 40m simply supported box girder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118288386A (en) * | 2024-06-06 | 2024-07-05 | 中铁四局集团有限公司 | Prefabricated box Liang Liangmian cloth vibration integrated intelligent integrated control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106592426B (en) | The construction method of transverse prestress overall with reinforced concrete bridge deck plate prefab-form system | |
| CN105298020B (en) | Semi-precast circular steel pipe regenerated mixed concrete pillar and preparation method thereof | |
| CN100450964C (en) | Micro-slump concrete for roller compacted concrete dam and construction method thereof | |
| CN107988852B (en) | The III new structural construction method of plate-type non-fragment orbit of tunnel location CRTS | |
| CN111777385A (en) | Inclined plane self-compacting concrete and pouring construction method thereof | |
| CN107268878A (en) | The fabrication and installation method of prefabricated sandwich wallboard | |
| CN110230394A (en) | The construction method of constructional column | |
| CN104499498B (en) | A kind of construction method of mass concrete building | |
| CN115256632A (en) | Prestressed box girder concrete pouring and distributing method | |
| CN109208487A (en) | Railway ultra-high performance concrete box girder formwork and construction method | |
| CN110593063A (en) | Simple slip form paving device for cast-in-place concrete hard road shoulder and manufacturing and using method thereof | |
| CN104589494A (en) | Vibration method for pre-tensioning prefabricated track boards | |
| CN110306382A (en) | A kind of slding form operation method of underground railway track substrate large fluidity spread concrete | |
| CN108914734A (en) | High tensile pervious concrete sandwich structure and preparation method | |
| CN108867392A (en) | Precast beam adjustable type tire construction method | |
| CN112609986A (en) | Method for controlling pouring forming quality of concrete batter post | |
| EP3760404A1 (en) | Method for manufacturing layered concrete parts | |
| CN109083319A (en) | A kind of preparation method of no vibrated concrete laminated floor slab | |
| CN207376372U (en) | A kind of truss bars concrete folding plate and non-fragment orbit | |
| US20220234248A1 (en) | Solid waste large-mixing-amount concrete prefabricated laminated slab and preparation method thereof | |
| CN115324349A (en) | Construction method for mass concrete of linear accelerator | |
| CN212175851U (en) | Vertical wall pouring construction device | |
| JP7330797B2 (en) | Concrete construction method | |
| Suryanto et al. | Developments in Portland cement/GGBS binders for 3D printing applications: Material calibration and structural testing | |
| CN206477251U (en) | Transverse prestress overall with reinforced concrete bridge deck plate prefab-form system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |