CN215857296U - Cantilever pouring hangs basket both ends balance mode adjustment structure and system - Google Patents
Cantilever pouring hangs basket both ends balance mode adjustment structure and system Download PDFInfo
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- CN215857296U CN215857296U CN202121958515.4U CN202121958515U CN215857296U CN 215857296 U CN215857296 U CN 215857296U CN 202121958515 U CN202121958515 U CN 202121958515U CN 215857296 U CN215857296 U CN 215857296U
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Abstract
The utility model discloses a cantilever casting hanging basket two-end balance mould adjusting structure and a system, which are arranged at two ends of continuous beam cantilever casting and used for monitoring unbalanced load and vertical mould elevation in the cantilever casting in real time through the effective combination of the cantilever casting hanging basket two-end balance mould adjusting structure and the system, wherein the two parts are symmetrical at the two ends. The method effectively solves the problem that the elevation of the vertical mold at two ends of the continuous beam is accurately controlled to solve unbalanced load at two ends of the bridge in the construction process of bridge engineering in the prior art, ensures the reaction speed, precision and stability of unbalanced load information in the construction process, reduces construction errors, and improves the safety and construction quality of hanging basket cantilever pouring.
Description
Technical Field
The utility model relates to a cantilever casting hanging basket two-end balance mould adjusting structure and a cantilever casting hanging basket two-end balance mould adjusting system, and relates to the technical field of bridge construction of constructional engineering.
Background
At present, the construction technology of the prestressed concrete continuous beam bridge hanging basket is a more common technical means in bridge construction at present in China. The related regulations of the state on the construction of highway bridges and culverts are as follows: when the hanging basket is cast, unbalanced loads of concrete casting on the cantilevers at the two ends cannot exceed a design specified value, the elevation error of the vertical mold is not more than +/-5 mm, and the stress of the hanging strip does not exceed a calculated load. In the traditional construction process, the reaction speed, precision and stability of unbalanced load information cannot be better guaranteed by depending on-site supervision of management personnel; in the construction process, the elevation of the vertical mold cannot be retested in time, so that the construction error is overlarge. Especially when the simultaneous casting is done at continuous beam both ends, because the both ends of continuous beam are the structure of encorbelmenting, the outer end pouring construction toward encorbelmenting more, the moment of continuous beam is bigger, the stress of the end of encorbelmenting is more arrived, only go to adjust the upright mould elevation at continuous beam both ends in order to control both ends weight this moment through the manual work, because the national standard has comparatively accurate control range to the upright mould elevation, manual regulation control is difficult to realize, and can consume a large amount of time cost and cost of labor at this in-process, there is great influence to the input of building engineering, and furtherly, can't effective control both ends upright mould elevation, the accumulated end weight of encorbelmenting combines together with the moment that the continuous beam lasts to increase, produce the concrete fission easily, influence the propulsion speed of whole engineering and bring hidden potential safety hazard.
The utility model patent application with the application number of CN201911065889.0 discloses a building stress balance monitoring system of a passive sensor network, which aims to solve the problem that a pressure sensor is easier to charge in building stress monitoring. This application can effectively detect the stress balance condition of each node of building, but to the unable effectual accurate realization in the balanced control in bridge both ends in the work progress, stride the pouring work progress on continuous beam both sides, need do accurate control to the upright mould elevation of both ends side span, need combine the accurate judgement of construction pouring component and control system this moment, be that this application can't realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a balanced die adjusting structure and a balanced die adjusting system at two ends of a cantilever casting hanging basket, which are effectively combined by the balanced die adjusting structure and the balanced die adjusting system at the two ends of the cantilever casting hanging basket and are composed of two parts with symmetrical two ends, and the balanced die adjusting structure and the balanced die adjusting system are arranged at the two ends of continuous beam cantilever casting, so that unbalanced load and vertical die elevation during cantilever casting are monitored in real time, and the safety and the construction quality of hanging basket cantilever casting are improved.
The technical scheme adopted by the utility model is as follows:
the utility model discloses a cantilever casting hanging basket two-end balance adjusting mold structure and a system, which comprises a continuous box girder cantilever bridge body, wherein the continuous box girder cantilever bridge body comprises an upper cross beam, a lower cross beam and a plurality of first support columns.
Furthermore, a plurality of second support columns are arranged above the upper cross beam of the continuous box girder cantilever bridge body, the number of the second support columns arranged above the first support columns is the same as that of the first support columns, a support plate is arranged at the upper end of each second support column, a single truss is erected on each support plate, and the single trusses are combined to form a continuous upper truss structure.
Furthermore, a lower truss is arranged below the lower cross beam, an assembled lower truss protection platform is connected to the lower truss, and the lower truss and the upper truss are symmetrically arranged on the upper side and the lower side of the continuous box girder cantilever bridge body.
Furthermore, a plurality of fixing devices are evenly arranged on the lower truss at intervals, fixing rods are vertically pulled into the upper box girder body by the fixing devices, the fixing rods are fixed in the box girder body in a riveting mode through rivets, and the positions of the fixing rods are in butt joint with the balance die adjusting structures arranged at the upper end, and the number of the fixing rods is equal.
Furthermore, the two ends of the upper surface of the supporting plate are pulled downwards through the pulling ropes to penetrate through the beam webs on the two sides of the first supporting column, and the pulling ropes penetrate through the supporting plate and the upper ends and the lower ends of the beam webs on the two sides of the first supporting column and are fixedly connected through riveting screws.
Furthermore, drawing devices are arranged on two sides of the upper end of the upper truss, and the drawing devices extend downwards through drawing rods to be connected with fixing devices at two ends of the lower truss.
The utility model has the following technical effects:
the utility model provides a cantilever casting hanging basket two-end balance adjusting mold structure and a system, which effectively solve the problem that the elevation of vertical molds at two ends of a continuous beam is accurately controlled in the bridge engineering construction process in the prior art so as to solve unbalanced load at two ends of a bridge, ensure the reaction speed, the precision and the stability of unbalanced load information in the construction process by stably connecting the hanging basket two-end balance adjusting mold structure with the continuous beam and matching the accurate control of a balance adjusting mold system, reduce construction errors and improve the safety and the construction quality of hanging basket cantilever casting.
The method comprises the following specific steps:
1. the utility model adopts the connection combination of the upper truss and the lower truss to match with the suspension structures at the two ends of the continuous beam suspension casting, and forms a stable stress structure through the structure combination, so as to meet the assembly stress requirements of the balance adjusting mold structure and the system, simultaneously meet the stress requirements of the continuous beam multi-span structure on fixed load and movable load, and avoid the influence on the unsafe deformation of the continuous beam caused by the stress change of the continuous beam due to the fact that the balance adjusting mold structure is arranged on the continuous beam span.
2. The utility model adopts the combination of the balanced die adjusting structure at the two ends of the hanging basket and the balanced die adjusting system, and the system can more timely and accurately judge the unbalanced load value during the cantilever pouring, so that the structure is safer during the unbalanced pouring
3. According to the utility model, the balance mould adjusting structure at two ends of the hanging basket and the balance mould adjusting system are combined, so that the system can more timely and accurately judge the stress of each hanging strip during cantilever pouring, and the damage of the hanging basket system caused by the overlarge stress of the individual hanging strip is avoided.
4. According to the utility model, the combination of the balanced die adjusting structure at two ends of the hanging basket and the balanced die adjusting system is adopted, the accuracy of the die elevation in the pouring process of the hanging basket can be monitored more effectively by the application of the system, and the bridge forming line type can be better ensured.
Drawings
FIG. 1 is a schematic diagram of a balanced formwork adjusting structure and a system structure at two ends of a cantilever casting hanging basket;
FIG. 2 is a flow chart of a balanced formwork adjustment structure at two ends of a cantilever casting hanging basket and unbalanced stress of a sling at one end of the system;
FIG. 3 is a flow chart of unbalanced load overrun of a balanced mode adjusting structure at two ends of a cantilever casting hanging basket and a hanging strip at two ends of a system;
FIG. 4 is a flow chart of the balance adjusting structure at two ends of the cantilever casting hanging basket and the over-limit elevation of the vertical mold of the system.
The labels in the figure are: 1-upper beam, 2-lower beam, 3-first support column, 4-balance mode-adjusting structure, 401-sling drawknot device, 402-sling, 403-sling force displacement sensor, 5-second support column, 6-support plate, 601-hauling rope, 7-upper truss, 8-lower truss, 801-fixing device, 802-fixing rod, 9-drawing device, 901-drawing rod, 10-lower truss protection platform, F1、F2、F3…Fn-tension value of straps of one end basket, F1’、F2’、F3’…Fn' -tension value of each sling of the basket at the other end, X1、X2、X3…Xn-tension value of each sling of the two end baskets, N1、N2、N3…NnDesign value of tension of each hanging strip of hanging basket, FIs provided withDesign value of the cast-in-place unbalance loading.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
In the embodiment, the adopted data is a preferred scheme, but is not used for limiting the utility model;
as shown in fig. 1, the embodiment provides a cantilever casting cradle two-end balance adjustment structure and system, which comprises a continuous box girder cantilever bridge body, wherein the continuous box girder cantilever bridge body comprises an upper cross beam, a lower cross beam and a plurality of first support columns, the continuous box girder cantilever bridge body is a symmetrical balance structure, a plurality of balance adjustment structures are arranged above the upper cross beam, the balance adjustment structures are symmetrically arranged on two side spans of the continuous box girder cantilever bridge body by using a bridge central line, each balance adjustment structure comprises a plurality of sling pulling devices, the sling pulling devices vertically pull slings downwards, sling force displacement sensors are arranged on the sling pulling devices, the sling force displacement sensors are connected with a central control system, and the central control system receives the sling force displacement sensors and transmits stress information of the two-side balance adjustment structures of the bridge to a system alarm device. Through the combination of the continuous beam two-end balance adjusting mold structure and the system, the reaction speed, the precision and the stability of unbalanced load information in the construction process are guaranteed, construction errors are reduced, and the safety and the construction quality of hanging basket cantilever pouring are improved.
In the embodiment, a plurality of second support columns are arranged above an upper cross beam of the continuous box girder cantilever bridge body, the number of the second support columns arranged above the first support columns is the same as that of the first support columns, a support plate is arranged at the upper end of each second support column, a single truss is erected on each support plate, and the single trusses are combined to form a continuous upper truss structure; the two ends of the upper surface of the supporting plate are downwards pulled to penetrate through the beam webs on the two sides of the first supporting column through the pulling rope, and the pulling rope penetrates through the supporting plate and the upper ends and the lower ends of the beam webs on the two sides of the first supporting column to be fixedly connected through riveting screws. Further, in the roof beam body bearing structure, the second support column sets up in the linear transmission of first support column top number in order to guarantee power, and the power transmission of going up the truss is the biggest to backup pad department in this structure, and the backup pad passes through the second support column and supports, so the second support column concentrates the power transmission to the entablature department with the top truss, in order to avoid the weak department atress of entablature structure, so first support column and second support column set up correspondingly.
In this embodiment, a lower truss is arranged below the lower cross beam, an assembled lower truss protection platform is connected to the lower truss, and the lower truss and the upper truss are symmetrically arranged on the upper side and the lower side of the continuous box girder cantilever bridge body. The upper end of the lower truss is provided with a plurality of fixing devices at intervals, the fixing devices vertically pull fixing rods towards the upper box girder body, the fixing rods are fixed in the box girder body in a riveting mode through rivets, and the positions of the fixing rods are in butt joint with the balance die adjusting structures arranged at the upper end, and the number of the fixing rods is equal. Furthermore, drawing devices are arranged on two sides of the upper end of the upper truss, and the drawing devices extend downwards through drawing rods to be connected with fixing devices at two ends of the lower truss. Preferably, the fixing device arranged on the lower truss and the balance mode adjusting structure arranged on the upper truss are mutually pulled, so that the connection and fixing relationship between the upper truss and the lower truss can be enhanced, and further, large errors generated in the balance mode adjusting process can be corrected through the structural combination. The sling of the balance adjusting mould structure generates larger force, the force of the drawknot sling can be adjusted temporarily through the fixing device at the lower part, and larger errors are avoided.
As shown in fig. 2 to 4, preferably, the balance adjusting mold structure and the balance adjusting mold system at two ends of the cantilever pouring hanging basket in the present embodiment can be realized by the following steps:
(1) as shown in FIG. 2, F1、F2、F3…FnStrap tension values for straps of one end cradle, N1、N2、N3…NnDesigning values for the tensile force of each hanging strip of the hanging basket. Detecting the sling tension value of each sling of the hanging basket at one end through the sling force displacement sensor, transmitting the stress information to the central control system, and judging F by the central control system1>N1Or F2>N2Or F3>N3Or F4>N4If the judgment is true, the central control system transmits a signal to the alarm device to send out an alarm that the stress of the hanging strip is unbalanced, and if the judgment is false, the central control system continues to monitor the stress condition of the hanging strip.
(2) As shown in FIG. 3, F1、F2、F3…FnStrap tension values for straps of one end basket, F1’、F2’、F3’…Fn' tension value of each sling of the other end of the hanging basket, FIs provided withDesign values for cantilever casting imbalance. Detecting and judging the difference value of the hanging baskets at the two ends and the design value of the unbalance of cantilever pouring; detecting the sling tension value of each sling of the hanging baskets at two ends through the sling force displacement sensor, transmitting the stress information to a central control system, and judging by the central control system (F)1+F2+F3+F4)-(F1’+F2’+F3’+F4’)>FIs provided withIf the judgment is true, the central control system transmits a signal to the alarm device to send out the alarm that the unbalanced load of the two ends of the hanging strip exceeds the limit, and if the judgment is false, the central control system continues to monitor the stress condition of the hanging strip.
(3) As shown in FIG. 4, X1、X2、X3…XnThe pulling force value of each hanging strip of the hanging basket at the two ends is obtained. At the moment, the tensile force values of the hanging straps of the hanging baskets at the two ends and the pre-lifting value added to the height error of the vertical mould with the height of 5mm specified by the national standard are detected and judged; the sling force displacement sensor is used for detecting the sling tension value of each sling of the hanging baskets at two ends and transmitting the stress information to the central control system, and the central control system judges X1>5mm + Pre-Lift value or X2>5mm + Pre-Lift value or X3>5mm + Pre-Lift value or X4>And 5mm + pre-lifting value, if the judgment is established, the central control system transmits a signal to the alarm device to send out a vertical mold elevation overrun alarm, if the judgment is not established, the central control system continues to monitor the stress condition of the lifting belt.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (6)
1. The utility model provides a cantilever casting hangs basket both ends balance mode adjustment structure and system, includes continuous box girder cantilever bridge body, and continuous box girder cantilever bridge body includes entablature (1), bottom end rail (2) and a plurality of first support column (3), its characterized in that, continuous box girder cantilever bridge body is the balanced structure of mutual symmetry, entablature (1) top is provided with a plurality of balance mode adjustment structures (4), and balance mode adjustment structure (4) are set up in continuous box girder cantilever bridge body both sides stride with bridge central line mutual symmetry, and balance mode adjustment structure (4) include a plurality of suspender drawknot devices (401), and suspender drawknot device (401) draw suspender (402) downwards vertically, be provided with suspender power displacement sensor (403) on suspender drawknot device (402), suspender power displacement sensor (403) connection center control system, center control system receipt suspender power displacement sensor (403) transmits bridge both sides balance mode adjustment structure (4) and then transmits the atress information to system alarm device .
2. The cast-in-place-in-cantilever hanging basket two-end balance die adjusting structure and system according to claim 1, wherein a plurality of second supporting columns (5) are arranged above the upper cross beam (1) of the continuous box girder cantilever bridge body, the number of the second supporting columns (5) above the first supporting columns (3) is the same as that of the first supporting columns (3), a supporting plate (6) is arranged at the upper end of each second supporting column (5), a single truss is erected on each supporting plate (6), and the single trusses are combined to form a continuous upper truss (7) structure.
3. The cast-in-place-in-cantilever hanging basket two-end balance die adjusting structure and system according to claim 2, wherein a lower truss (8) is arranged below the lower cross beam (2), an assembled lower truss protection platform (10) is connected to the lower truss (8), and the lower truss (8) and an upper truss (7) are symmetrically arranged on the upper side and the lower side of the continuous box girder cantilever bridge body.
4. The structure and the system for balancing and adjusting the mold at two ends of the cast-in-cantilever hanging basket according to claim 2 or 3 are characterized in that a plurality of fixing devices (801) are uniformly arranged on the lower truss (8) at intervals, the fixing devices (801) vertically pull fixing rods (802) into the upper box girder body, the fixing rods (802) are fixed in the box girder body through riveting rivets, and the positions of the fixing rods (802) are butted with the balance and mold adjusting structures (4) arranged at the upper ends and are equal in number.
5. The cast-in-cantilever hanging basket two-end balance die adjusting structure and system as claimed in claim 1, wherein two ends of the upper surface of the supporting plate (6) are pulled downwards through two side webs of the first supporting column (3) by a pulling rope (601), and the pulling rope (601) passes through the supporting plate (6) and the upper and lower ends of the two side webs of the first supporting column (3) and is fixedly connected through riveting screws.
6. The cast-in-place cantilever hanging basket two-end balance die adjusting structure and system according to claim 1 are characterized in that two sides of the upper end of the upper truss (7) are provided with pulling devices (9), and the pulling devices (9) are connected with fixing devices (801) at two ends of the lower truss (8) in a downward extending mode through pulling rods (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958515.4U CN215857296U (en) | 2021-08-19 | 2021-08-19 | Cantilever pouring hangs basket both ends balance mode adjustment structure and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121958515.4U CN215857296U (en) | 2021-08-19 | 2021-08-19 | Cantilever pouring hangs basket both ends balance mode adjustment structure and system |
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| CN215857296U true CN215857296U (en) | 2022-02-18 |
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| CN202121958515.4U Active CN215857296U (en) | 2021-08-19 | 2021-08-19 | Cantilever pouring hangs basket both ends balance mode adjustment structure and system |
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