CN115596199A - Method for connecting steel pipe supporting rods in slip form construction - Google Patents
Method for connecting steel pipe supporting rods in slip form construction Download PDFInfo
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- CN115596199A CN115596199A CN202211497709.8A CN202211497709A CN115596199A CN 115596199 A CN115596199 A CN 115596199A CN 202211497709 A CN202211497709 A CN 202211497709A CN 115596199 A CN115596199 A CN 115596199A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/22—Sliding forms raised continuously or step-by-step and being in contact with the poured concrete during raising and which are not anchored in the hardened concrete; Arrangements of lifting means therefor
- E04G11/24—Construction of lifting jacks or climbing rods for sliding forms
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Abstract
The invention provides a method for connecting steel pipe supporting rods in slip form construction, and relates to the technical field of slip form construction. The method comprises the following steps: s1, manufacturing a bottom supporting rod, wherein the bottom supporting rod comprises a first steel pipe and a first socket short pipe, and the first socket short pipe is fixedly arranged at the end part of the first steel pipe in a penetrating mode. S2, manufacturing a support rod, wherein the support rod comprises a second steel pipe and a second socket short pipe, and the second socket short pipe is fixedly arranged at the end part of the second steel pipe in a penetrating mode. S3, installing a bottom support rod, wherein the first socket short pipe is arranged upwards. And S4, when the jack runs to the upper part of the first steel pipe, fixedly inserting a second steel pipe on the first socket short pipe. And S5, when the jack runs to the upper part of the second steel pipe, continuing to fixedly insert the next second steel pipe on the second socket short pipe, and repeating the S5 until the sliding form finishes climbing. The method saves the construction cost, obviously reduces the operation time of the connection of the supporting rods, reduces the workload of workers, and is an economic, simple, convenient and flexible supporting rod connection mode.
Description
Technical Field
The invention relates to the technical field of slip form construction, in particular to a method for connecting steel pipe supporting rods in slip form construction.
Background
At present, in slip form construction, the steel pipe support rod connection method mainly comprises the following three methods:
1. and (3) steel pipe butt welding connection: namely, the two support rods are connected together by adopting a butt welding mode, and the construction method is a more traditional construction method. The method has the defects that a groove needs to be machined at the joint part of the steel pipe in advance, welding is carried out on site during installation, the welding workload is large, the verticality is not easy to control, the site operation environment is poor, and the safety is poor. After welding, in order to ensure that the jack pore passage can pass through smoothly, the welding seam of the joint needs to be polished, so that the construction process is complicated, and the construction period is long.
2. And (4) screw thread connection: the method has the advantages of fast connection in construction sites and high efficiency, but the screw threads are required to be processed at the two ends of each steel pipe in advance, so the manufacturing cost is high. Through actual accounting, 25-30 yuan (2017 year data) is needed for processing a steel pipe support rod connector, the manpower and material resource consumption is large, and the construction cost is high.
3. The pressing joint of the pipe pressing machine is connected: the method also has the advantages of quick connection in construction sites and high construction efficiency, but the pressure pipe machinery needs to be purchased by investing capital, and the early investment is increased. Meanwhile, after the steel pipe is pressed by a pipe pressing machine, the structural form of the steel pipe at the variable cross section is changed, the structural strength of the steel pipe is greatly influenced, and the construction safety is finally influenced.
Therefore, the three construction methods have various defects, and the defects are the main factors for limiting the slip form construction progress and the construction cost. Therefore, the method for connecting the steel pipe supporting rods is urgent to seek for a method which is simple and convenient to construct, short in construction period and low in construction cost.
Disclosure of Invention
In view of the above, the present invention is directed to a method for connecting a steel pipe support rod in a slip form construction, so as to solve the above problems.
Based on the purpose, the invention provides a method for connecting a steel pipe supporting rod in slip form construction, which comprises the following steps:
s1, manufacturing a bottom supporting rod, wherein the bottom supporting rod comprises a first steel pipe and a first socket short pipe, and the first socket short pipe is fixedly arranged at the end part of the first steel pipe in a penetrating mode.
And S2, manufacturing a support rod, wherein the support rod comprises a second steel pipe and a second socket short pipe, and the second socket short pipe is fixedly arranged at the end part of the second steel pipe in a penetrating manner.
S3, installing a bottom support rod, wherein the first socket short pipe is arranged upwards.
And S4, when the jack runs to the upper part of the first steel pipe, fixedly inserting a second steel pipe on the first socket short pipe.
And S5, when the jack runs to the upper part of the second steel pipe, continuing to fixedly insert the next second steel pipe on the second socket short pipe, and repeating the S5 until the sliding form finishes climbing.
Compared with the prior art, the invention has the beneficial effects that: and inserting a short pipe which is smaller than the steel pipe by one size into the joint part of the steel pipe, welding and fixing the short pipe with the steel pipe to form a socket end, and directly inserting the upper section of the steel pipe into the socket end for welding and fixing during the sliding formwork construction. The method has the advantages of saving the construction cost, obviously reducing the operation time of connecting the support rods, reducing the workload of workers, having high safety, avoiding the capital pressure of purchasing the pipe pressing machine in the early stage, being an economic, simple, convenient and flexible support rod connecting mode and having good popularization prospect.
Furthermore, the bottom supporting rods comprise a plurality of groups, the length of each group of bottom supporting rods is different, and the joint ratio of the supporting rods on the same horizontal plane is less than or equal to 25%.
Further, the specific step of fixedly mounting the first socket pipe stub at the end of the first steel pipe in the S1 includes: the first socket short pipe is arranged at the end part of the first steel pipe in a penetrating way, and the length of the first socket short pipe penetrating into the end part of the first steel pipe is two fifths to three fifths of the length of the first socket short pipe; adjusting the center line of the first socket short pipe to coincide with the center line of the first steel pipe; and welding and fixing the first socket short pipe and the first steel pipe.
Further, the specific step of fixedly mounting the second socket pipe stub at the end of the second steel pipe in the step S2 includes: the second socket short pipe penetrates the end part of the second steel pipe, and the length of the second socket short pipe penetrating the end part of the second steel pipe is two fifths to three fifths of the length of the second socket short pipe; adjusting the center line of the second socket short pipe to coincide with the center line of the second steel pipe; and welding and fixing the second socket short pipe and the second steel pipe.
Further, the specific step of S4 includes: when the top surface of the jack is 350mm to 450mm away from the top end of the first steel pipe, hoisting the support rod to the operating platform; cleaning a first socket short pipe positioned outside a first steel pipe; sleeving a second steel pipe on the first socket short pipe; adjusting the straightness of the second steel pipe, wherein the straightness of the second steel pipe is less than or equal to 1.5 per thousand, so that the center line of the second steel pipe is superposed with the center line of the first socket short pipe; welding and fixing the second steel pipe and the first socket short pipe; and polishing the welding seam to ensure that the height of the welding seam does not exceed the surface of the second steel pipe.
Further, when the jack runs to the upper part of the second steel pipe in the step S5, the concrete step of continuously fixedly inserting the next second steel pipe on the second socket pipe stub includes: when the top surface of the jack is 350mm to 450mm away from the top end of the second steel pipe, hoisting the next support rod to the operating platform; cleaning a second socket short pipe positioned outside a second steel pipe; sleeving the next second steel pipe on the second socket short pipe; adjusting the straightness of the next second steel pipe, wherein the straightness of the next second steel pipe is less than or equal to 1.5 ‰, and the central line of the next second steel pipe is superposed with the central line of the second socket short pipe; welding and fixing the next second steel pipe and the second socket short pipe; and polishing the welding seam to ensure that the height of the welding seam does not exceed the surface of the next second steel pipe.
Drawings
Fig. 1 is a plan view of support rods at the bottom of a silo slip form according to a method for connecting steel tube support rods in slip form construction provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of a bottom support rod of the method for connecting steel pipe support rods in slip form construction according to an embodiment of the present invention;
fig. 3 is a supporting rod connection diagram illustrating a method for connecting supporting rods of a steel pipe in slip form construction according to an embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
Labeled in the figure as: 1. a bottom support bar; 2. a building wall column structure; 3. a first steel pipe; 4. a first socket stub; 5. a jack; 6. a lower section supporting rod; 7. an upper section of support rod; 8. and (7) welding meat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments.
As shown in fig. 1 to 4, the method for connecting a steel pipe support rod in a slip form construction according to the present invention comprises the following steps:
s1, manufacturing a bottom support rod 1, wherein the bottom support rod 1 is composed of a first steel pipe 3 and a first socket short pipe 4. And the first socket short pipe 4 is penetrated and arranged at the end part of the first steel pipe 3, and the length of the first socket short pipe 4 penetrating into the end part of the first steel pipe 3 is two fifths to three fifths of the length of the first socket short pipe 4. The center line of the first socket short pipe 4 is adjusted to coincide with the center line of the first steel pipe 3, so that the verticality of the bottom support rod 1 after extension is ensured not to deviate. And (3) welding and fixing the first socket short pipe 4 and the first steel pipe 3, wherein the height of the welding seam 8 is not more than the surface of the first steel pipe 3.
And S2, manufacturing a support rod, wherein the support rod consists of a second steel pipe and a second socket short pipe. And the second socket short pipe is arranged at the end part of the second steel pipe in a penetrating manner, and the length of the second socket short pipe penetrating into the end part of the second steel pipe is two fifths to three fifths of the length of the second socket short pipe. And the center line of the second socket short pipe is adjusted to coincide with the center line of the second steel pipe, so that the verticality of the support rod after extension is ensured not to deviate. And welding and fixing the second socket short pipe and the second steel pipe, wherein the height of the welding meat 8 is not more than the surface of the second steel pipe.
And S3, installing the bottom support rod 1, and arranging the first socket short pipe 4 upwards. The bottom support rods 1 comprise a plurality of groups, the length of each group of bottom support rods 1 is different, and the joint rate of the support rods on the same horizontal plane is less than or equal to 25%.
S4, when the top surface of the jack 5 is 350mm to 450mm away from the top end of the first steel pipe 3, the supporting rod is hoisted to the operating platform. The first socket short pipe 4 positioned outside the first steel pipe 3 is cleaned, and the second steel pipe can be smoothly inserted. And sleeving the second steel pipe on the first socket short pipe 4. And adjusting the straightness of the second steel pipe, wherein the straightness of the second steel pipe is less than or equal to 1.5 per thousand, so that the center line of the second steel pipe is superposed with the center line of the first socket short pipe 4. And (3) welding and fixing the second steel pipe and the first socket short pipe 4, and polishing the welding seam to ensure that the height of the welding seam 8 is not more than the surface of the second steel pipe.
S5, when the distance between the top surface of the jack 5 and the top end of the second steel pipe is 350mm to 450mm, the next supporting rod is hoisted to the operating platform. And cleaning the second socket short pipe positioned outside the second steel pipe. And sleeving the next second steel pipe on the second socket short pipe. And adjusting the straightness of the next second steel pipe, wherein the straightness of the next second steel pipe is less than or equal to 1.5 per thousand, so that the center line of the next second steel pipe is superposed with the center line of the second socket short pipe. And welding and fixing the next second steel pipe and the second socket short pipe, polishing the welding line, ensuring that the height of the welding meat 8 is not more than the surface of the next second steel pipe, and ensuring that the jack 5 can smoothly pass through the joint. And repeating S5 until the sliding mode climbing is finished.
The manufacturing process comprises the following steps: according to the traditional construction method, a phi 48 multiplied by 3.25mm welded steel pipe is selected to intercept the first steel pipe 3 and the second steel pipe, and a phi 38 multiplied by 3mm welded steel pipe with the length of 150mm is selected to serve as the first socket short pipe 4 and the second socket short pipe. The length of the first socket short pipe 4 inserted into the first steel pipe 3 and the length of the second socket short pipe inserted into the second steel pipe are both 70mm.
A certain number of bottom support rods 1 and jacks 5 are arranged according to the concrete structural form of the project, generally, each jack 5 is provided with one bottom support rod 1, and the bottom support rods 1 are uniformly distributed along the circumferential direction of a building wall column structure 2. In order to ensure the strength of the slip form supporting system, the joints of the adjacent supporting rods cannot be arranged on the same horizontal plane. Therefore, according to actual conditions in the field, when the slipform bottom support rods 1 are installed, the bottom support rods 1 are divided into four groups, the lengths of the four groups of bottom support rods 1 are divided into 3m, 4m, 5m and 6m, and the bottom support rods 1 in the four groups are arranged in a staggered manner, that is, the heights of the adjacent bottom support rods 1 are different. Afterwards, the length of each supporting rod is set to be 6m, so that the joint rate of the supporting rods on the same horizontal plane is 25%. Along with the climbing of the sliding mould, an upper section supporting rod 7 is fixedly inserted on the lower section supporting rod 6 with insufficient length for lengthening treatment until the climbing of the sliding mould is completed.
Taking Shanxi Liaoxin coking coal storage and distribution chamber 10 silos as an example, the Shanxi Liaoxin coking coal storage and distribution project is totally designed with 10 silos, the outer diameter of each silo is 21.4m, the height of each silo is 49.96m, 48 support rods are arranged, each support rod is provided with 8 joints, and therefore each silo is provided with 384 joints. After the actual application accounting of Shanxi Lian Xin coking coal storage and distribution project, the manufacturing and installation cost of 1 joint in the method only needs 3 yuan.
As described in the background art, the screw connection method requires 25 to 30 yuan for each connection joint, and the single-seat silo processing and manufacturing cost is 11520 yuan calculated according to 30 yuan for each screw joint by using the screw connection. The cost for manufacturing and installing the single-seat silo is 1152 yuan by using the connection of the opposite-inserting type steel pipes in the method. Therefore, the cost of a single-seat silo can be saved by 10368 yuan, and the cost of Shanxi Lian Xin coking coal storage and distribution chamber engineering is saved by 103680 yuan.
Compared with a steel pipe butt welding connection method and a pipe press pressing joint connection method, the method is not much different from the two methods in terms of economy. However, the butt welding method of the steel pipes adopts field welding, the welding workload is large, the verticality is not easy to control, the field operation environment is poor, and operators are unsafe. The pressing joint connection method of the pipe pressing machine requires capital investment to purchase the pipe pressing machine, the early investment is large, meanwhile, after the steel pipe is pressed by the pipe pressing machine, the structural form of the steel pipe at the variable cross section is changed, the structural strength of the steel pipe is greatly influenced, and the construction safety is finally influenced.
Therefore, compared with the three construction methods commonly used in the field of sliding formwork construction at present, the method has the advantages that the construction cost is saved, meanwhile, the operation time for connecting the supporting rods is obviously shortened, the workload of workers is reduced, the safety is high, the capital pressure of purchasing pressure pipe machinery in the early stage is avoided, the method is an economic, simple, convenient and flexible supporting rod connecting mode, and the popularization prospect is good.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A method for connecting a steel pipe supporting rod in slip form construction is characterized by comprising the following steps:
s1, manufacturing a bottom support rod, wherein the bottom support rod comprises a first steel pipe and a first socket short pipe, and the first socket short pipe is fixedly arranged at the end part of the first steel pipe in a penetrating manner;
s2, manufacturing a support rod, wherein the support rod comprises a second steel pipe and a second socket short pipe, and the second socket short pipe is fixedly arranged at the end part of the second steel pipe in a penetrating manner;
s3, installing a bottom support rod, wherein the first socket short pipe is arranged upwards;
s4, when the jack runs to the upper part of the first steel pipe, fixedly inserting a second steel pipe on the first socket short pipe;
and S5, when the jack runs to the upper part of the second steel pipe, continuing to fixedly insert the next second steel pipe on the second socket short pipe, and repeating the S5 until the sliding form finishes climbing.
2. The method for connecting steel pipe support rods in slipform construction according to claim 1, wherein the bottom support rods comprise a plurality of groups, the length of each group of bottom support rods is different, and the joint ratio of the support rods in the same horizontal plane is less than or equal to 25%.
3. The method for connecting the steel pipe support rods in the slipform construction according to claim 1, wherein the specific step of fixedly penetrating the first socket stub at the end of the first steel pipe in the step S1 comprises:
the first socket short pipe penetrates through the end part of the first steel pipe, and the length of the first socket short pipe penetrating through the end part of the first steel pipe is two fifths to three fifths of the length of the first socket short pipe;
adjusting the center line of the first socket short pipe to coincide with the center line of the first steel pipe;
and welding and fixing the first socket short pipe and the first steel pipe.
4. The method for connecting the steel pipe support rods in the slipform construction according to claim 1, wherein the step of fixedly penetrating the second socket stub pipe at the end of the second steel pipe in S2 comprises the following steps:
the second socket short pipe penetrates the end part of the second steel pipe, and the length of the second socket short pipe penetrating the end part of the second steel pipe is two fifths to three fifths of the length of the second socket short pipe;
adjusting the center line of the second socket short pipe to coincide with the center line of the second steel pipe;
and welding and fixing the second socket short pipe and the second steel pipe.
5. The method for connecting a steel pipe support rod in slipform construction according to claim 1, wherein the concrete step of S4 comprises:
when the top surface of the jack is 350mm to 450mm away from the top end of the first steel pipe, hoisting the support rod to the operating platform;
cleaning a first socket short pipe positioned outside a first steel pipe;
sleeving a second steel pipe on the first socket short pipe;
adjusting the straightness of the second steel pipe, wherein the straightness of the second steel pipe is less than or equal to 1.5 per thousand, so that the center line of the second steel pipe is superposed with the center line of the first socket short pipe;
welding and fixing the second steel pipe and the first socket short pipe;
and polishing the welding seam to ensure that the height of the welding seam does not exceed the surface of the second steel pipe.
6. The method for connecting a steel pipe support rod in slipform construction according to claim 1, wherein the step of continuing to fixedly insert the next second steel pipe into the second socket stub when the jack is operated to the upper portion of the second steel pipe in S5 comprises:
when the top surface of the jack is 350mm to 450mm away from the top end of the second steel pipe, hoisting the next support rod to the operating platform;
cleaning a second socket short pipe positioned outside the second steel pipe;
sleeving the next second steel pipe on the second socket short pipe;
adjusting the straightness of the next second steel pipe, wherein the straightness of the next second steel pipe is less than or equal to 1.5 ‰, and the central line of the next second steel pipe is superposed with the central line of the second socket short pipe;
welding and fixing the next second steel pipe and the second socket short pipe;
and polishing the welding seam to ensure that the height of the welding seam does not exceed the surface of the next second steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211497709.8A CN115596199A (en) | 2022-11-28 | 2022-11-28 | Method for connecting steel pipe supporting rods in slip form construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211497709.8A CN115596199A (en) | 2022-11-28 | 2022-11-28 | Method for connecting steel pipe supporting rods in slip form construction |
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| CN202211497709.8A Pending CN115596199A (en) | 2022-11-28 | 2022-11-28 | Method for connecting steel pipe supporting rods in slip form construction |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205063331U (en) * | 2015-10-17 | 2016-03-02 | 神华大雁工程建设有限公司建筑安装分公司 | Slipform architecture |
| CN107687254A (en) * | 2017-09-30 | 2018-02-13 | 五冶集团上海有限公司 | A kind of concrete disjunctor group storehouse slip form construction device and construction method |
| CN212671170U (en) * | 2020-05-27 | 2021-03-09 | 镇江市光大建筑工程有限公司 | Slip form construction supporting rod connecting structure |
| CN112854757A (en) * | 2020-12-31 | 2021-05-28 | 中建七局安装工程有限公司 | Construction method for integrally towing conical truss support by slip form of large silo |
| CN213898108U (en) * | 2020-11-14 | 2021-08-06 | 中煤建筑安装工程集团有限公司 | Socket joint formula hydraulic pressure sliding formwork lift system bracing piece |
-
2022
- 2022-11-28 CN CN202211497709.8A patent/CN115596199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205063331U (en) * | 2015-10-17 | 2016-03-02 | 神华大雁工程建设有限公司建筑安装分公司 | Slipform architecture |
| CN107687254A (en) * | 2017-09-30 | 2018-02-13 | 五冶集团上海有限公司 | A kind of concrete disjunctor group storehouse slip form construction device and construction method |
| CN212671170U (en) * | 2020-05-27 | 2021-03-09 | 镇江市光大建筑工程有限公司 | Slip form construction supporting rod connecting structure |
| CN213898108U (en) * | 2020-11-14 | 2021-08-06 | 中煤建筑安装工程集团有限公司 | Socket joint formula hydraulic pressure sliding formwork lift system bracing piece |
| CN112854757A (en) * | 2020-12-31 | 2021-05-28 | 中建七局安装工程有限公司 | Construction method for integrally towing conical truss support by slip form of large silo |
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