Simulation test method for steel strand loading of mold adjusting jack in hanging basket suspension casting construction

Abstract

The invention relates to the technical field of building bridges, and discloses a hanging basket suspension casting construction mold adjusting jack steel strand loading simulation test method, which comprises the following steps: installing a test structure, carrying out a balance loading test and an unbalance loading test, collecting data, respectively calculating a balance function and an unbalance function, and obtaining a displacement compensation value. The jack carries out tensioning adjustment according to the displacement compensation value, a suspension test is carried out in a balanced loading test and an unbalanced loading test, and actual operation and verification are carried out according to a calculation result; the small deformation of the front lower cross beam in the hanging basket due to load change in the concrete pouring process is monitored, the sinking amount is compensated in time through the jack, it is ensured that the front lower cross beam is always kept at the design elevation, and the problem of beam body linetype deviation caused by elastic deformation of a traditional rigid suspension system is solved; the geometric dimension of the poured beam body is highly matched with the design requirement, and a solid foundation is laid for follow-up bridge deck construction and standard reaching of the stress performance of the bridge.

Description

Technical Field

[0001] The invention relates to the technical field of building bridges, and more particularly to a simulation test method for loading steel strands of a formwork adjustment jack in a hanging basket suspended pouring construction. Background Art

[0002] As a mobile aerial work platform, the hanging basket undertakes key construction tasks such as concrete pouring, rebar tying, and formwork installation. The stability of the system directly determines the accuracy, safety, and efficiency of bridge construction. Traditional hanging basket suspension systems use steel slings. Steel slings are made of multiple sets of high-strength steel plates or steel sections as the main load-bearing components. They are usually made of low-alloy high-strength steel such as Q345 or Q355, and are connected by bolts or pins to form a suspension unit.

[0003] The two ends of the steel slings are connected to the main truss (upper part) of the hanging basket and the longitudinal beam (lower part) of the bottom basket respectively. Each set of slings corresponds to a suspension point and is evenly arranged along the longitudinal or transverse direction of the bottom basket to form a multi-point suspension system. The high rigidity of steel is utilized to directly transfer the bottom basket load to the main truss of the hanging basket, and then to the cast beam through the main truss. Before construction, the initial elevation positioning of the bottom basket is achieved by adjusting the length of the steel slings. During the casting process, the rigidity of the steel slings themselves is mainly relied on to resist deformation.

[0004] Although the steel slings are relatively rigid, they still deform elastically under load (especially the gradually increasing load during concrete pouring). This deformation increases with cumulative load, causing the basket system to inevitably sink. Furthermore, the fixed length of the steel slings makes it difficult to adjust them during pouring, making it difficult to compensate for deformation and limiting the ability to control construction precision.

[0005] As an important component of the hanging basket, the bottom basket system is the direct load-bearing structure for concrete pouring, and must withstand multiple loads including newly poured concrete, formwork, construction personnel, and equipment. Throughout the pouring process, the accuracy of the bottom basket's elevation control is crucial. If the bottom basket deforms excessively or sinks due to load changes, it will not only cause the beam's linear shape to deviate from design requirements, resulting in insufficient pre-camber and misaligned beam joints, affecting the bridge's mechanical performance and appearance. It may also cause secondary problems such as formwork deformation and uneven steel bar cover thickness, increasing subsequent repair costs and even posing safety hazards due to structural stress concentration.

[0006] The traditional hanging basket suspension system is difficult to effectively suppress the deformation and sinking of the bottom basket when dealing with the dynamic load during the concrete pouring process. With the continuous improvement of the construction accuracy requirements of highway bridges (such as millimeter-level linear control) and the increase in the single pouring volume of concrete for large-span bridges, the limitations of the existing suspension system are becoming increasingly prominent, and it is necessary to develop a bottom basket suspension technology with real-time adjustment and precise positioning capabilities to solve the bottom basket stability problem under dynamic load changes. For this purpose, a simulation test method for loading the steel strands of the formwork adjustment jack in hanging basket suspended pouring construction is invented. Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, the implementation regulations of the present invention provide a simulation test method for loading the steel strands of the mold adjustment jack in a hanging basket suspended pouring construction to solve the technical problems raised in the background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction, comprising the following steps:

[0009] Step S1, installing the test structure;

[0010] Step S2: performing a balanced loading test and collecting data;

[0011] Step S3: performing an unbalanced loading test and collecting data;

[0012] Step S4: Calculate a balance function and an unbalance function according to the balanced loading test and the unbalanced loading test, and obtain a displacement compensation value according to the balance function and the unbalance function;

[0013] Step S5: The jack is tensioned and adjusted according to the displacement compensation value, so that the front lower crossbeam is in a horizontal state and the height difference between the front lower crossbeam and the preset height is within 2 mm;

[0014] Step S6: performing a suspension test in the balanced loading test and the unbalanced loading test;

[0015] Step S7: During the suspension process, the jack is tensioned and adjusted before time t to ensure the balance state and position accuracy of the front lower crossbeam;

[0016] Step S8: Perform actual operations based on the calculation results to verify the test process.

[0017] In a preferred embodiment, in step S1, the test structure is composed of four groups of support frames forming a tensioning table, six channel steel beams are connected to the four groups of support frames into a whole by bolting, four I-beams are spot-welded to the contact position of the support frame on the top cross brace of the support frame, ten I-beam pads are placed on the top of the I-beams, the front upper crossbeam is installed on the I-beam pads, two channel steels are temporarily welded on the top of each group of support frames for limit fixation, seven 100t continuous jack bases and jacks are installed on the front upper crossbeam, temporary sleepers are used to support the front lower crossbeam, the front lower crossbeam is installed, the front upper crossbeam is connected to the front lower crossbeam by a sling and a steel strand, a support steel plate and a self-locking jack are placed on the top of the front lower crossbeam, a steel pipe is installed on the top of the self-locking jack, a group of double-piece I-beams are installed on the top of each steel pipe, and the double-piece I-beams and the I-beams at the top of the support frame are spot-welded.

[0018] In a preferred embodiment, the test structure also includes a laser rangefinder installed at the bottom of the jack and used to detect the height difference between the front upper beam and the front lower beam. The laser rangefinder detects the downward displacement value of the front lower beam, and the jack tensions the steel strand according to the downward displacement value to compensate for the downward displacement of the front lower beam.

[0019] In a preferred embodiment, in step S2, the balanced loading test is performed in a graded loading manner of 0→10%→30%→50%→80%→100%→110%. After loading, the load is held and observed for 3 to 5 minutes, and the balanced downward displacement PX of the front lower beam in the seven grades in the balanced loading test is collected. In step S4, a coordinate curve is established with the percentage of graded loading and the balanced downward displacement PX. According to the coordinate curve, the balance function between the balanced downward displacement PX and the loading percentage is obtained by interpolation method, the balanced downward displacement PX is used as the independent variable, the loading percentage is used as the dependent variable, and the balanced downward displacement PX is used as the displacement compensation value.

[0020] In a preferred embodiment, in step S3, during the unbalanced loading test, graded loading of 0→10%→30%→50%→80%→100%→110% is performed on one side of the test structure to be tested. After loading, the load is held and observed for 3 to 5 minutes, and the unbalanced downward displacement BX of the front lower beam directly below the seven jacks is collected. The seven jacks are arranged according to their distance from the loading position. In step S4, a coordinate curve is established using the percentage of graded loading and the unbalanced downward displacement BX. According to the coordinate curve, the unbalance function between the unbalanced downward displacement BX and the loading percentage is obtained by interpolation, and the unbalanced downward displacement BX is used as the displacement compensation value. The seven unbalanced downward displacements BX correspond to the seven jacks respectively.

[0021] In a preferred embodiment, the jack is tensioned and adjusted according to the displacement compensation value obtained from the balanced downward displacement PX and the unbalanced downward displacement BX to ensure that the front lower crossbeam is in a horizontal state while the height difference between the actual height position of the front lower crossbeam and the preset height position is within 2 mm.

[0022] In a preferred embodiment, in step S6, the time t required for the position of the front lower beam under each jack to exceed 2 mm in the balanced loading test and the unbalanced loading test is recorded during the suspension test. Before the front lower beam hovers for more than t time, the jack is tensioned and adjusted with 2 mm as the balanced downward displacement PX and the unbalanced downward displacement BX.

[0023] In a preferred embodiment, in step S8, when balanced loading is performed, the jack is tensioned and adjusted using a balance function according to the percentage of loading, and the height difference between the actual height position of the front lower crossbeam and the preset height position is collected. The height difference is the balance error value PW. The loading state is maintained, and the jack is adjusted at time t with 2 mm as the balance downward displacement PX, and adjustment is performed at each subsequent time t, and the balance height difference PG between the actual height position of the front lower crossbeam and the preset height position under the final balanced loading is collected.

[0024] In a preferred embodiment, in step S8, when unbalanced loading is performed, the seven jacks are tensioned and adjusted using an unbalanced function according to the loading percentage, and the height difference between the actual height position of the front lower crossbeam and the preset height position is collected. The height difference is the unbalanced error value BW. At time t, each jack is adjusted with 2 mm as the unbalanced downward displacement BX, and the adjustment is performed at each subsequent time t, and the unbalanced height difference BG between the actual height position of the front lower crossbeam and the preset height position under the final unbalanced loading is collected.

[0025] In a preferred embodiment, it is determined whether the balance error value PW, the balance height difference PG, the unbalance error value BW, and the unbalance height difference BG are within 2 mm respectively. Step S8 is performed more than ten times, and the error is within 2 mm more than 90% of the time. The test is successful. If the test is unsuccessful, steps S2-S7 are repeated until the test is successful.

[0026] Technical effects and advantages of the present invention:

[0027] 1. This invention monitors the slight deformation of the front lower crossbeam in the hanging basket due to load changes during concrete pouring, and uses jacks to promptly compensate for the sinking, ensuring that the front lower crossbeam always remains at the designed elevation. This fundamentally solves the problem of beam linear deviation caused by elastic deformation in traditional rigid suspension systems, avoids quality defects such as insufficient pre-camber and misaligned beam joints, and ensures that the geometric dimensions of the beam after pouring are highly consistent with design requirements, laying a solid foundation for subsequent bridge deck construction and ensuring that the bridge's mechanical performance meets standards.

[0028] 2. During the concrete pouring process, the present invention can prevent the bottom of the hanging basket from being locally overstressed due to uneven load distribution. By precisely controlling the position and adjusting the suspension force of each jack, it can avoid the breakage or deformation of individual components due to overload, and prevent safety accidents such as bottom basket tilting and formwork cracking. The adjusted hanging basket has a stable elevation, which can reduce problems such as uneven thickness of steel bar protective layer and offset of embedded parts, reduce the risk of cracks in the structure due to stress concentration in the later stage, and extend the service life of the bridge.

[0029] 3. During the construction of highway bridge hanging baskets, the concrete pouring load exhibits dynamic changes. By sensing the load changes in real time and rapidly responding and adjusting, the balance and stability of the bottom basket can be maintained at all times. Even in the construction of complex structures such as curved beams and variable-section beams, the spatial position of the bottom basket can be precisely controlled to ensure the consistency of the template with the designed line shape, breaking through the limitations of traditional systems with poor adaptability under complex working conditions.

[0030] 4. Through the synergistic effect of real-time adjustment and precise position control, the present invention comprehensively optimizes the hanging basket concrete pouring construction process from the dimensions of quality, safety, and efficiency, thereby improving the quality and efficiency of highway bridge construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the simulation test method of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1 The present invention provides a simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction, comprising the following steps:

[0034] Step S1, installing the test structure;

[0035] Step S2: performing a balanced loading test and collecting data;

[0036] Step S3: performing an unbalanced loading test and collecting data;

[0037] Step S4: Calculate a balance function and an unbalance function according to the balanced loading test and the unbalanced loading test, and obtain a displacement compensation value according to the balance function and the unbalance function;

[0038] Step S5: The jack is tensioned and adjusted according to the displacement compensation value, so that the front lower crossbeam is in a horizontal state and the height difference between the front lower crossbeam and the preset height is within 2 mm;

[0039] Step S6: performing a suspension test in the balanced loading test and the unbalanced loading test;

[0040] Step S7: During the suspension process, the jack is tensioned and adjusted before time t to ensure the balance state and position accuracy of the front lower crossbeam;

[0041] Step S8: Perform actual operations based on the calculation results to verify the test process.

[0042] In the embodiment of the present application, the present application adopts steel wire rope and jack to lift the hanging basket, and loads in a balanced manner and an unbalanced manner respectively, and performs graded records to record the loading changes, and automatically compensates according to the loading changes. Ultimately, the present application can perform displacement supplementation in different environments when the hanging basket is working, thereby ensuring that the hanging basket position is consistent with the preset position of the template. The present application can be dynamically adjusted, so different adjustment controls are performed under different load environments, and the accuracy of the control is guaranteed, thereby always maintaining the balance and stability of the bottom basket.

[0043] Reference Figure 1In step S1, the test structure is composed of four groups of support frames forming a tensioning table. Six channel steel beams are connected to the four groups of support frames by bolting. Four I-beams are spot-welded to the contact positions of the support frames on the top cross braces of the support frames. Ten I-beam pads are placed on the top of the I-beams. The front upper beam is installed on the I-beam pads. Two channel steels are temporarily welded on the top of each group of support frames for positional fixation. Seven 100t continuous jack bases and jacks are installed on the front upper beam. Temporary sleepers are used to support the front lower beam. The front lower beam is installed and the lifting device and steel strands are used. A line connects the front upper crossbeam and the front lower crossbeam, a support steel plate and a self-locking jack are placed on the top of the front lower crossbeam, a steel pipe is installed on the top of the self-locking jack, a set of double I-beams are installed on the top of each steel pipe, and the double I-beams are spot-welded to the I-beam on the top of the support frame. The test structure also includes a laser rangefinder installed at the bottom of the jack and used to detect the height difference between the front upper crossbeam and the front lower crossbeam. The precision optical rangefinder detects the downward displacement value of the front lower crossbeam. The jack tensions the steel strands according to the downward displacement value to compensate for the downward displacement of the front lower crossbeam.

[0044] In the embodiment of the present application, after the test structure is constructed, when the test structure constructed in the present application is in use, the seven jacks on the top can be controlled separately, so the bottom of the hanging basket composed of the experimental structure can be adjusted accurately separately to ensure the overall level of the hanging basket, and the hanging basket itself is connected and fixed by multiple groups of I-beams to ensure the stability and load-bearing capacity of the hanging basket of the present application when working, thereby ensuring its safety during the test work.

[0045] Referring to the figure, in the step S2, the balanced loading test is graded loaded in the manner of 0→10%→30%→50%→80%→100%→110%. After loading, the load is held and observed for 3 to 5 minutes, and the balanced downward displacement PX of the front lower beam in the seven grades in the balanced loading test is collected. In the step S4, a coordinate curve is established with the percentage of graded loading and the balanced downward displacement PX. According to the coordinate curve, the balance function between the balanced downward displacement PX and the loading percentage is obtained by interpolation. The balanced downward displacement PX is the independent variable, the loading percentage is the dependent variable, and the balanced downward displacement PX is used as the displacement compensation value. In the step S3, during the unbalanced loading test, a graded loading test of 0→10%→30%→50%→80%→100%→110% is performed on one side of the test mechanism to be tested. The load is then held for observation for 3 to 5 minutes, and the unbalanced downward displacement BX of the front lower crossbeam directly below the seven jacks is collected. The seven jacks are arranged according to their distance from the loading position. In step S4, a coordinate curve is established using the percentage of the graded loading and the unbalanced downward displacement BX. Based on the coordinate curve, an unbalance function between the unbalanced downward displacement BX and the loading percentage is obtained by interpolation. The unbalanced downward displacement BX is used as the displacement compensation value, and the seven unbalanced downward displacements BX correspond to seven jacks respectively. The jacks are tensioned and adjusted according to the displacement compensation values ​​obtained from the balanced downward displacement PX and the unbalanced downward displacement BX to ensure that the front lower crossbeam is in a horizontal state and that the height difference between the actual height position of the front lower crossbeam and the preset height position is within 2 mm.

[0046] In the embodiment of the present application, when balanced loading is performed, loading is performed in stages starting from 0, and after loading, the load is held and observed for 3 to 5 minutes to ensure that the load is in a stable state. A coordinate curve is established according to the percentage of graded loading and the balanced downward displacement PX. At this time, the change of the balanced downward displacement PX under different loading conditions can be understood. At this time, the balance function between the balanced downward displacement PX and the loading percentage is obtained by interpolation, that is, the function is obtained according to the function curve, so that the value of the balanced downward displacement PX under different loading percentages can be understood. Therefore, in actual use, when encountering a 5% situation, the balanced downward displacement PX can also be obtained. At this time, the jack is adjusted in time so that the height difference between the actual height position of the front lower crossbeam and the preset height position is within 2 mm, that is, the position of the hanging basket is consistent with the template requirements;

[0047] Similarly, when conducting an unbalanced loading test, during the hanging basket concrete pouring construction process, after the bottom plate concrete pouring is completed, when the web concrete pouring begins, the site usually pours the web on one side to a certain height first, then pours the web on the other side to a certain height, and then returns to pour the web on the other side, and repeats the cycle until the web pouring is completed. When the concrete heights of the webs on both sides are inconsistent, the hanging basket will be in an unbalanced stress state. In order to ensure the safety of the structure, this test simulates the situation where the hanging basket bottom plate concrete pouring is completed, the web on one side is poured to the chamfer of the top plate, and the web on the other side has not been poured with concrete. This situation is relatively unbalanced, so the unbalanced loading test of this application can simulate this situation and be conducted on one side. During loading, graded loading is also performed. After graded loading, the unbalanced downward displacement BX of the front lower beam directly below the seven jacks is collected. At this time, the impact on different jacks in an unbalanced state is understood. At this time, a coordinate curve is established for each jack with the percentage of graded loading and the unbalanced downward displacement BX. The compensation value that needs to be adjusted for each jack in this situation can be understood. Each jack is compensated separately to ensure that the hanging basket composed of the test structure of this application can maintain a horizontal state after adjustment during unbalanced loading, and the height difference between the actual height position of the front lower beam in the hanging basket and the preset height position is within 2mm.

[0048] Reference Figure 1 In step S6, the time t required for the position of the front lower crossbeam below each jack to exceed 2 mm in the balanced loading test and the unbalanced loading test is recorded during the suspension test. Before the front lower crossbeam hovers for more than t time, the jack is tensioned and adjusted with 2 mm as the balanced downward displacement PX and the unbalanced downward displacement BX.

[0049] In the embodiment of the present application, after loading, whether it is unbalanced loading or balanced loading, the hanging basket will also have a certain degree of displacement when it is in a loaded state for a long time. Therefore, the present application records the data of its suspended state after loading, and records the time t required for the position of the front lower beam under each jack to exceed 2mm. When the time t is exceeded, the displacement will exceed the standard requirements. Therefore, the time t is recorded. In actual use, it is adjusted in time before reaching the time t to ensure that the present application is always in a state that meets the requirements.

[0050] Reference Figure 1In step S8, when balanced loading is performed, the jack is tensioned and adjusted with a balance function according to the loading percentage, and the height difference between the actual height position of the front lower crossbeam and the preset height position is collected. The height difference is the balance error value PW, and the loading state is maintained. At time t, the jack is adjusted with 2mm as the balance downward displacement PX, and each subsequent time t is adjusted to collect the balance height difference PG between the actual height position of the front lower crossbeam and the preset height position under the final balanced loading. In step S8, when unbalanced loading is performed, the seven jacks are tensioned and adjusted with an unbalance function according to the loading percentage, and the actual height position of the front lower crossbeam is collected. The height difference between the actual height position of the front lower crossbeam and the preset height position is the unbalance error value BW. At time t, each jack is adjusted with 2mm as the unbalanced downward displacement BX, and is adjusted at each subsequent time t. The unbalance height difference BG between the actual height position of the front lower crossbeam under the final unbalanced loading and the preset height position is collected, and the balance error value PW, the balance height difference PG, the unbalance error value BW, and the unbalance height difference BG are judged to be within 2mm respectively. If step S8 is performed more than ten times and the number of times the error is within 2mm is more than 90%, the test is successful. If the test is unsuccessful, steps S2-S7 are repeated until the test is successful.

[0051] In the embodiment of the present application, after all data collection and calculation are completed, it is necessary to simulate the actual situation to ensure the accuracy of the test method of the present application. Therefore, balanced loading and unbalanced loading are performed respectively. While loading, the tension adjustment of the jack is performed according to the balance function and the unbalance function respectively. When the probability that the balance error value PW and the unbalance error value BW exceed 2mm is more than 10%, the test fails. Therefore, steps S2-S7 are repeated. When the operation is repeated, the average of the values ​​of the balance error value PW and the unbalance error value BW exceeding 2mm is added to the previous balance downward displacement PX and the unbalanced downward displacement BX, and the calculation is repeated until the probability that the balance error value PW and the unbalance error value BW exceed 2mm is within 10%. The balance height difference PG and the unbalance height difference BG are calculated simultaneously, so that when the final test is applied, the error is within 2mm.

[0052] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The units and algorithm steps of each example described in the embodiment can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0053] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0054] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0055] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction, characterized by: The following steps are involved: Step S1, installing the test structure; Step S2: performing a balanced loading test and collecting data; Step S3: performing an unbalanced loading test and collecting data; Step S4: Calculate a balance function and an unbalance function according to the balanced loading test and the unbalanced loading test, and obtain a displacement compensation value according to the balance function and the unbalance function; Step S5: The jack is tensioned and adjusted according to the displacement compensation value, so that the front lower crossbeam is in a horizontal state and the height difference between the front lower crossbeam and the preset height is within 2 mm; Step S6: performing a suspension test in the balanced loading test and the unbalanced loading test; Step S7: During the suspension process, the jack is tensioned and adjusted before time t to ensure the balance state and position accuracy of the front lower crossbeam; Step S8: Perform actual operations based on the calculation results to verify the test process.

2. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 1, characterized in that: In step S1, the test structure is composed of four groups of support frames forming a tensioning table, six channel steel beams are connected to the four groups of support frames into a whole by bolting, four I-beams are spot-welded to the contact position of the support frame on the top cross brace of the support frame, ten I-beam pads are placed on the top of the I-beams, the front upper beam is installed on the I-beam pads, two channel steels are temporarily welded on the top of each group of support frames for limit fixation, seven 100t continuous jack bases and jacks are installed on the front upper beam, temporary sleepers are used to support the front lower beam, the front lower beam is installed, the front upper beam is connected to the front lower beam by a sling and a steel strand, a support steel plate and a self-locking jack are placed on the top of the front lower beam, a steel pipe is installed on the top of the self-locking jack, a group of double-piece I-beams are installed on the top of each steel pipe, and the double-piece I-beams and the I-beams at the top of the support frame are spot-welded.

3. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 2, characterized in that: The test structure also includes a laser rangefinder installed at the bottom of the jack and used to detect the height difference between the front upper beam and the front lower beam. The laser rangefinder detects the downward displacement value of the front lower beam. The jack tensions the steel strands according to the downward displacement value to compensate for the downward displacement of the front lower beam.

4. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 1 is characterized in that: In step S2, the balanced loading test is performed in a graded manner of 0→10%→30%→50%→80%→100%→110%. After loading, the load is held and observed for 3 to 5 minutes, and the balanced downward displacement PX of the front lower crossbeam at seven levels in the balanced loading test is collected. In step S4, a coordinate curve is established using the percentage of graded loading and the balanced downward displacement PX. Based on the coordinate curve, an interpolation method is used to obtain a balance function between the balanced downward displacement PX and the loading percentage. The balanced downward displacement PX is used as the independent variable, the loading percentage is used as the dependent variable, and the balanced downward displacement PX is used as the displacement compensation value.

5. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 4 is characterized in that: In step S3, during the unbalanced loading test, graded loading of 0→10%→30%→50%→80%→100%→110% is performed on one side of the test structure to be tested. After loading, the load is held and observed for 3 to 5 minutes, and the unbalanced downward displacement BX of the front lower beam directly below the seven jacks is collected. The seven jacks are arranged according to their distance from the loading position. In step S4, a coordinate curve is established using the percentage of graded loading and the unbalanced downward displacement BX. Based on the coordinate curve, an unbalance function between the unbalanced downward displacement BX and the loading percentage is obtained by interpolation. The unbalanced downward displacement BX is used as the displacement compensation value, and the seven unbalanced downward displacements BX correspond to the seven jacks respectively.

6. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 5, characterized in that: The jack is tensioned and adjusted according to the displacement compensation value obtained from the balanced downward displacement PX and the unbalanced downward displacement BX to ensure that the front lower crossbeam is in a horizontal state and the height difference between the actual height position of the front lower crossbeam and the preset height position is within 2mm.

7. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 1, characterized in that: In step S6, the time t required for the position of the front lower crossbeam below each jack to exceed 2 mm in the balanced loading test and the unbalanced loading test is recorded during the suspension test. Before the front lower crossbeam hovers for more than t time, the jack is tensioned and adjusted with 2 mm as the balanced downward displacement PX and the unbalanced downward displacement BX.

8. The simulation test method for loading steel strands with a mold adjustment jack during suspended pouring construction in a hanging basket according to claim 1, characterized in that: In step S8, when balanced loading is performed, the jack is tensioned and adjusted using a balance function according to the percentage of loading, and the height difference between the actual height position of the front lower crossbeam and the preset height position is collected. The height difference is the balance error value PW. The loading state is maintained, and the jack is adjusted at time t with 2 mm as the balance downward displacement PX, and adjustment is performed at each subsequent time t, and the balance height difference PG between the actual height position of the front lower crossbeam and the preset height position under the final balanced loading is collected.

9. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 8, characterized in that: In step S8, when unbalanced loading is performed, the seven jacks are tensioned and adjusted using an unbalance function according to the loading percentage, and the height difference between the actual height position of the front lower crossbeam and the preset height position is collected. This height difference is the unbalance error value BW. At time t, each jack is adjusted using 2 mm as the unbalanced downward displacement BX, and adjustments are performed at each subsequent time t. The unbalanced height difference BG between the actual height position of the front lower crossbeam and the preset height position under the final unbalanced loading is collected.

10. The simulation test method for loading steel strands with a mold adjustment jack in a hanging basket suspended pouring construction according to claim 9, characterized in that: Determine whether the balance error value PW, the balance height difference PG, the unbalance error value BW, and the unbalance height difference BG are within 2 mm respectively. Step S8 is performed more than ten times, and if the error is within 2 mm more than 90% of the time, the test is successful. If the test is unsuccessful, repeat steps S2-S7 until the test is successful.

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