No.0 block bracket pre-pressing reaction frame device for hanging basket construction
By designing the hanging basket construction No. 0 block bracket preload reaction frame device on the No. 0 block bracket of the T-shaped rigid frame bridge, and using the jacking device to apply force to the counter-pressure beam, it solves the problem that the stacked preload cannot achieve the preload effect and There is a problem of bias risk, which achieves uniform force bearing of the bracket device and shortens the preloading period.
Patent Information
- Application Number
- CN202420545260.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-03-20
AI Technical Summary
In the prior art, the pre-pressure of the T-shaped rigid frame bridge No. 0 block bracket mainly uses stacking pre-pressure, but because the space of the No. 0 block bracket is small, the stacking pre-pressure may not achieve the pre-pressure effect, and there is bias pressure. Risk, which may lead to instability of the frame.
A pre -pressure reaction rack device is designed with a type 0 bracket of the hanging basket, including the anti -tick screw steel bars embedded in the pier pillar and the bracket device set on the side of the pier column. Through the anti -pressure beam for the anti -pressure beam, the simulation beam body concrete pouring process is equivalent to the equivalent method of the bracket device.
This device can effectively measure the deformation and stress changes of various parts of the bracket device, reduce the preloading preparation time, avoid the risk of uneven stress on the bracket device, and greatly shorten the preloading cycle.
Smart Images
Figure CN222390259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a No. 0 block bracket pre-compression reaction frame device for hanging basket construction. Background Art
[0002] High-pier continuous rigid frame bridges are often used in areas where expressways cross gullies or rivers. The construction of bridges usually adopts the cantilever casting method. During the hanging basket casting and segment assembly, the entire bridge should be divided into several segments according to length or prestressed tendons or rods, and the construction should be carried out section by section. The section located at the top of the pier is called segment 0 or block 0. The continuous rigid frame block 0 is generally constructed with large-volume concrete cast-in-place. The stability and deformation of the bracket are the key to determining the success of the cast-in-place beam construction. After the bracket is assembled, the bracket must be pre-stressed to eliminate non-elastic deformation, and the elastic deformation value under the corresponding load must be measured to test the stress condition of the rods and the stability of the entire bracket. When erecting the formwork, the corresponding pre-arch should be considered according to the pre-stressing result.
[0003] At present, the preloading of the No. 0 block bracket of a T-type rigid frame bridge basically adopts the method of preloading with pile load, that is, using sandbags, water bags or prefabricated blocks for preloading with pile load. Due to the small space of the No. 0 block bracket, the preloading with pile load may not achieve the preloading effect, and there is a risk of bias in the preloading with pile load, which may cause the frame to become unstable. Utility Model Content
[0004] The purpose of the utility model is to provide a pre-compression reaction frame device for No. 0 block bracket of hanging basket construction, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A No. 0 bracket pre-compression reaction frame device for hanging basket construction, comprising a reverse tension threaded steel bar pre-buried in a pier column, one end of the reverse tension threaded steel bar extending to the outside of the top of the pier column, and a bracket device arranged on the side of the pier column, wherein the length direction of the bracket device is consistent with the length direction of the bridge;
[0007] A jacking device is provided on the top of the bracket device, and an adjusting module is provided on the pier. The tops of the jacking device and the adjusting module are abutted against a counter-pressure beam. One end of the counter-tension threaded steel bar located above the pier passes through the counter-pressure beam, and a nut for fixing the counter-pressure beam is provided.
[0008] Furthermore, the lifting device is a CNC hydraulic jack.
[0009] Furthermore, the bracket device includes a transverse main beam and an oblique support, the transverse main beam is fixedly connected to the pier, one end of the oblique support is connected to the bottom of the transverse main beam, and the other end of the oblique support is fixedly connected to the side wall of the pier.
[0010] Furthermore, the oblique support includes a support beam and a fixed seat. Both ends of the support beam are provided with mounting seats. The fixed seat is pre-buried in the pier, and one end of the fixed seat extends to the outside of the side wall of the pier. The support beam is fixedly connected to the fixed seat through one of the mounting seats, and the support beam is fixedly connected to the transverse main beam through the other mounting seat.
[0011] Furthermore, the counter-pressure beam includes an anchor distribution beam, a counter-pressure main beam and a jacking distribution beam which are sequentially connected from top to bottom, and the bottom of the jacking device is connected to the bottom of the jacking distribution beam.
[0012] Preferably, it also includes an operating base, which is installed on the top of the transverse main beam, and the top of the jacking device is connected to the top of the operating base.
[0013] Furthermore, the adjustment module includes an adjustment base and a support base, and the top of the adjustment base and the bottom of the support base are fixedly connected.
[0014] The utility model has at least the following advantages or beneficial effects:
[0015] The utility model provides a No. 0 bracket preloading reaction frame device for hanging basket construction, which applies force to the reaction beam through a jacking device, thereby simulating the equivalent preloading of the bracket device during the pouring of beam concrete, which can not only measure the deformation and stress changes of various parts of the bracket device, but also reduce the preparation time for preloading; in addition, the jacking device replaces the traditional pile load preloading, so that the bracket device can be loaded and stressed at the same time, avoiding the risk of uneven force on the bracket device. The device has a simple structure and a simple construction plan, which greatly shortens the preloading cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A structural schematic diagram of a No. 0 block bracket pre-compression reaction frame device for hanging basket construction provided by the utility model;
[0018] Figure 2 A schematic diagram of the structure of the bracket device provided by the utility model installed on a pier column;
[0019] Figure 3 It is a left view of a No. 0 block bracket pre-compression reaction frame device for hanging basket construction provided by the utility model.
[0020] Icons: 100- pier; 101- counter-tensioned threaded steel bar; 103- nut; 110- bracket device; 111- transverse main beam; 113- inclined support; 115- support beam; 119- mounting seat; 130- jacking device; 131- operating base; 150- adjustment module; 151- adjustment base; 153- support base; 170- counter-pressure beam; 171- anchoring distribution beam; 173- counter-pressure main beam; 175- jacking distribution beam. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Please refer to Figures 1 to 3 As shown, a pre-stressed reaction frame device for the No. 0 bracket of the hanging basket construction includes a reverse tension threaded steel bar 101 pre-buried in the pier 100, one end of the reverse tension threaded steel bar 101 extends to the top outer side of the pier 100, and the end is screwed with a nut 103. It also includes a bracket device 110 arranged on the side of the pier 100, and the length direction of the bracket device 110 is consistent with the length direction of the bridge. A jacking device 130 is arranged on the top of the bracket device 110, and an adjustment module 150 is arranged on the top of the pier 100. The tops of the jacking device 130 and the adjustment module 150 are abutted with a reverse pressure beam 170, and the adjustment module 150 is the support point of the reverse pressure beam 170, which can adjust the height of the reverse pressure beam 170 to ensure the accurate position of the jacking device 130. In this embodiment, the jacking device 130 is an existing CNC hydraulic jack. The end of the anti-tension threaded steel bar 101 located above the pier 100 passes through the anti-pressure beam 170, and the anti-pressure beam 170 is fixed by the nut 103 set at the end. The device uses the anti-tension threaded steel bar 101 pre-buried in the pier 100 to pre-compress the force system of the reaction frame device, and uses the tension of the jacking device 130 to pre-compress the bracket device 110 with an equivalent load, thereby avoiding the risk of uneven force on the bracket device 110.
[0023] Specifically, the bracket device 110 includes a transverse main beam 111 and an oblique support 113. The transverse main beam 111 is formed by welding two I40 I-beams, and the length direction of the transverse main beam 111 is consistent with the length direction of the bridge. There are multiple transverse main beams 111, which are arranged at intervals on one opposite side of the pier 100. The transverse main beam 111 is fixedly connected to the pier 100. The transverse main beam 111 can pass through the pier 100 and extend to the other side of the pier 100. It can also be clamped in a way that a mounting ring is arranged on the pier 100, and one end of the transverse main beam 111 is hinged to the mounting ring. One end of the oblique support 113 is connected to the bottom of the end of the transverse main beam 111 away from the pier 100, and the other end of the oblique support 113 is fixedly connected to the side wall of the pier 100. The number of the oblique supports 113 is consistent with the number of the transverse main beams 111 . When the bracket device 110 is installed on the pier 100 , the transverse main beams 111 are in a horizontal state, and the oblique supports 113 are used to support the transverse main beams 111 .
[0024] In this embodiment, the oblique support 113 includes a support beam 115 and a fixing seat. The support beam 115 is an I20 I-beam, and mounting seats 119 are provided at both ends thereof. The mounting seats 119 are provided with through holes. The fixing seats are embedded in the pier 100, and the fixing seats include a fixing plate, and a plurality of bolts are provided at intervals on one side of the fixing plate. The ends of the bolts away from the fixing plate extend to the outside of the side wall of the pier 100. The support beam 115 is bolted to the fixing seat through one of the mounting seats 119, and the support beam 115 is bolted to the transverse main beam 111 through the other mounting seat 119.
[0025] Furthermore, the counter-pressure beam 170 includes an anchor distribution beam 171, a counter-pressure main beam 173 and a jacking distribution beam 175 connected in sequence from top to bottom. The upper end of the counter-tension threaded steel bar 101 passes through the jacking distribution beam 175 and the anchor distribution beam 171, and cooperates with the nut 103 to fix the counter-pressure beam 170.
[0026] The top of the jacking device 130 is connected to the bottom of the jacking distribution beam 175. Preferably, an operating base 131 is also provided at the bottom of the jacking device 130, and the operating base 131 is also an I-beam. The operating base 131 is horizontally installed on the top of the transverse main beam 111 and is perpendicular to the transverse main beam 111. The bottom of the jacking device 130 is fixedly connected to the top of the operating base 131.
[0027] Furthermore, the adjustment module 150 includes an adjustment base 151 and a support base 153. Both the adjustment base 151 and the support base 153 are I-beams. The top of the adjustment base 151 and the bottom of the support base 153 are connected by welding or screwing. Construction personnel can choose adjustment bases 151 and support bases 153 of different heights according to construction requirements to adjust the height of the back-pressure beam 170.
[0028] In this embodiment, the installation steps of the bracket pre-compression reaction frame device are as follows:
[0029] S100: pre-embedded reverse tension threaded steel bars;
[0030] During the construction of the main pier, anti-tension threaded steel bars are embedded in the pier top, and precision-rolled threaded steel bars are used as the main anti-tension load-bearing components.
[0031] S200: mounting bracket device;
[0032] S300: Install the adjustment module on the pier top, install the counter-pressure beam and fix it with counter-tension threaded steel bars, then install the CNC hydraulic jack operating base and jacking distribution beam at the top of the inclined support, and apply pre-tightening force to the CNC hydraulic jack to ensure that the CNC hydraulic jack is installed firmly and will not overturn and fall before formal pressure is applied.
[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A No. 0 bracket preloading reaction frame device for hanging basket construction, characterized in that: It includes a reverse-tensioned threaded steel bar embedded in the pier column, one end of which extends to the outside of the top of the pier column, and a bracket device arranged on the side of the pier column, wherein the length direction of the bracket device is consistent with the length direction of the bridge; A jacking device is provided on the top of the bracket device, and an adjustment module is provided on the pier. The tops of the jacking device and the adjustment module are abutted with a counter-pressure beam. One end of the counter-tension threaded steel bar located above the pier passes through the counter-pressure beam and is provided with a nut for fixing the counter-pressure beam.
2. A No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 1, characterized in that: The jacking device is a numerically controlled hydraulic jack.
3. The No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 1 is characterized in that: The bracket device includes a transverse main beam and an oblique support, wherein the transverse main beam is fixedly connected to the pier, one end of the oblique support is connected to the bottom of the transverse main beam, and the other end of the oblique support is fixedly connected to the side wall of the pier.
4. A No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 3, characterized in that: The oblique support includes a support beam and a fixed seat, both ends of the support beam are provided with mounting seats, the fixed seat is pre-buried in the pier, and one end of the fixed seat extends to the outside of the side wall of the pier, the support beam is fixedly connected to the fixed seat through one of the mounting seats, and the support beam is fixedly connected to the transverse main beam through the other mounting seat.
5. The No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 1 is characterized in that: The counter-pressure beam comprises an anchor distribution beam, a counter-pressure main beam and a jacking distribution beam which are sequentially connected from top to bottom, and the top of the jacking device is connected to the bottom of the jacking distribution beam.
6. The No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 3 is characterized in that: It also includes an operating base, which is installed on the top of the transverse main beam, and the bottom of the jacking device is connected to the top of the operating base.
7. The No. 0 bracket preloading reaction frame device for hanging basket construction according to claim 1 is characterized in that: The adjustment module comprises an adjustment base and a support base, and the top of the adjustment base is fixedly connected to the bottom of the support base.