A segmented construction device and method for long continuous cast-in-situ beams with large spans

Abstract

The present invention discloses a segmented construction device for a long continuous cast-in-situ beam with a large span and a construction method thereof, comprising a frame; wherein the frame is adapted to the three-reference-plane projection of the cast-in-situ beam portion, and the two ends of the frame are driven to move by a power unit; that is, the frame is adapted to the size of a preset portion of the external cast-in-situ beam, or its specific size can be selected as a size based on an intermittent fit; a linear drive mechanism is symmetrically arranged on the outside of the frame; the present invention uses a plurality of linear drive mechanisms to jointly output four sets of linear degrees of freedom based on themselves for linkage, relies on dynamic parameter adjustment to drive the array clamping assembly and other related components to realize the transportation and installation of the metal structure of the cast-in-situ beam portion and the adaptation of the functional module for construction operations, solves the technical defects in the traditional technology of parametric passive adaptation and direct pump pipe laying operations that are difficult to adapt to large-span construction sections and difficult to adapt to construction by workers, and effectively meets the actual application and practicality requirements.

Description

Technical Field

[0001] The invention relates to the technical field of cast-in-situ beams, and in particular to a segmented construction device and a construction method for a long continuous cast-in-situ beam with a large span. Background Art

[0002] Cast-in-situ beams are a construction method that involves installing formwork on a support, tying a steel reinforcement frame, and then pouring concrete on-site. Due to its relatively simple construction and low cost, it is well-suited for monolithic structures, especially those with long, continuous spans. Currently, the most commonly used traditional support structure is the full-height scaffold, which utilizes components such as beams, columns, and connectors, controls the spacing and pitch of steel pipe scaffolding poles, and incorporates structural measures such as scissor bracing to create a geometrically stable system or structure.

[0003] Based on traditional technology, it is known that cast-in-place beams have good adaptability to large spans, large loads and large space structures, but they also have many defects. In the existing construction of large-span, long and continuous cast-in-place beams, there are technical problems with the non-standard design of the pier height coefficient, the outer surface amplitude coefficient, and the automobile pump distribution coefficient. The conventional large-span, long and continuous concrete construction adopts the form of direct distribution through pump pipes, that is, after the ground pump pumps concrete to the beam surface, the distribution is carried out by removing, connecting and moving the horizontal pump pipe. According to the conventional construction method, each concrete pouring time is long and the construction is inconvenient. In addition, the pier height pump pipe is relayed multiple times, and the workability of the concrete is greatly lost. The interval time between removing and connecting the pump pipe is prone to blockage, and the quality of the beam concrete pouring cannot be guaranteed.

[0004] Based on the above, the defects in the prior art can be summarized as follows:

[0005] 1. The above parameters such as pier height coefficient are passive parameters generated based on the design and need to be adapted by the construction personnel themselves;

[0006] Second, due to the long span characteristics, the direct placement of pump pipes cannot effectively allocate specific and variable implementation sections, resulting in the above-mentioned technical and subsequent problems;

[0007] 3. Based on actual conditions, the actual construction situation in "One" requires a large number of temporary structural measures, and installation and disassembly are relatively cumbersome. Several temporary piers need to be built, which places high demands on the foundation. The bearing capacity and deformation of the foundation bearing layer and the weak underlying layer need to be verified and calculated to ensure that they are within the allowable range. In addition, the bearing capacity and deformation of the foundation within the foundation range where the support scaffolding pipes are to be erected for the entire span of the bridge must meet the requirements. The generation of variables is essentially an uncontrollable phenomenon and needs to be improved.

[0008] To this end, the present invention proposes a device and method for solving the above-mentioned problems; specifically, the present invention provides a segmented construction device and a construction method for a long continuous cast-in-situ beam with a large span. Summary of the Invention

[0009] In view of this, the embodiments of the present invention hope to provide a segmented construction device and construction method for a long continuous cast-in-situ beam with a large span, so as to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option;

[0010] The technical solution of the embodiment of the present invention is achieved as follows: a segmented construction device for a long continuous cast-in-situ beam with a large span comprises a frame;

[0011] The frame is adapted to the three-reference-plane projection of the cast-in-situ beam, and both ends of the frame are driven by the power unit; that is, the frame is adapted to the size of the preset portion of the external cast-in-situ beam, or its specific size can be selected as a size based on the form of intermittent fit;

[0012] A linear drive mechanism is symmetrically provided on the outside of the frame, and the linear drive mechanism outputs the first, second, third and fourth linear degrees of freedom; wherein, the first linear degree of freedom drives the second linear degree of freedom along the Y-axis, the second linear degree of freedom drives the third linear degree of freedom along the X-axis, and the third linear degree of freedom drives the fourth linear degree of freedom along the Z-axis; the fourth linear degree of freedom drives an array clamping assembly and a first truss part, which are respectively used to carry and install the cast-in-place beam metal structure and adapt the functional module for construction operations.

[0013] In the above embodiment, each of the four sets of linear degrees of freedom outputs a linearly based degree of freedom, and the specific stroke of this degree of freedom is not limited; its specific output parameters are determined based on actual design indicators or the different specifications and models used by this device. It should be noted that the above four sets of linear degrees of freedom are based on and serve as the basis for dynamic driving of the construction drive mode required by this device;

[0014] In one embodiment, the power unit is preferably a wheel track unit, and the wheel tracks are symmetrically installed at both ends of the frame.

[0015] In the above embodiment, the wheel track portion is essentially a crawler vehicle drive. Due to the increased force area, increased friction, and improved grip, when used on a specific construction site, the relative pressure on the ground is reduced, making it less likely to cause wheel sinking. The track shoe is provided with friction grooves and spikes to prevent slippage in rain, snow, ice, and other construction sites, ensuring construction accuracy.

[0016] And in actual application, the whole device is based on the reference position of the frame for construction work;

[0017] In one embodiment, the linear drive mechanism includes a first frame and a second frame slidably engaged with the first frame; one of the first frames is fixed to the frame along the Y-axis, and the second frame engaged therewith is connected to another first frame, and another first frame is slidably engaged with another second frame along the X-axis; the two second frames in the above order are driven by the first linear degree of freedom and the second linear degree of freedom, respectively;

[0018] In the above embodiment, the number of the first frame and the second frame is not limited, and in actual application, the number of drives for the first and second linear degrees of freedom and the amount of travel for controlling the third and fourth linear degrees of freedom are determined;

[0019] In one embodiment, the linear drive mechanism includes a first linear module; the first linear module is installed between the first frame and the second frame, and outputs a linear-based degree of freedom.

[0020] At the same time, in the above embodiment: the first linear module preferably includes: a motor and a gear rack assembly driven by the motor, wherein the gear rack assembly is composed of a gear and a rack that mesh with each other, the motor is mounted on the second frame, and the rack is mounted on the first frame; the two first linear modules output the first linear degree of freedom and the second linear degree of freedom.

[0021] In the above embodiment, the linear degree of freedom is achieved by utilizing the characteristics of the gear and rack that transmit motion and power between any two axes. The specific circumferential speed of the gear and rack assembly used in this device is 100 m / s under no-load conditions, and the transmission power is 900 kW. Based on the high-load characteristics of this device, the heat treatment temperature of the tooth surface of the gear and rack assembly is HRC30 to HRC35.

[0022] In one embodiment, the linear drive mechanism further includes a second linear module arranged along the Z-axis and a third linear module arranged along the Y-axis; the second linear module is mounted on the second frame and drives and adjusts the third linear module; the third linear module drives the third frame vertically downward; the third frame is connected to the array clamping assembly or the first truss part.

[0023] In the above embodiment, both the second linear module and the third linear module are telescopic cylinders.

[0024] In the above embodiment, the telescopic cylinder is preferably a hydraulic cylinder with high load performance; the outside of the frame needs to be equipped with a hydraulic oil tank and oil pump powered by the hydraulic cylinder, wherein the connection of the pipeline relies on the external laying of the drag chain for synchronous position adjustment, which needs to be laid based on the frame.

[0025] In one embodiment, the first linear degree of freedom simultaneously carries at least two of the second linear degrees of freedom, preferably two of the second linear degrees of freedom;

[0026] At the same time, the present invention also provides a construction method for long-span continuous cast-in-situ beam segments, comprising the following steps:

[0027] S1. Based on the operation of the above-mentioned device, after pre-leveling and positioning the cast-in-place beam, the linear drive mechanism is driven to output the first, second, third and fourth linear degrees of freedom to complete the transportation and installation of the cast-in-place beam metal structure and the adaptation of the functional module for construction;

[0028] S2, driving the frame to move along the construction section and performing S1 again;

[0029] S3, repeat S1 and S2 until the construction is completed;

[0030] In one embodiment, in S1, the array clamping assembly and the first truss portion are used to complete the transportation and installation of the cast-in-place beam metal structure and the adaptation of the functional module for construction work; the above-mentioned functional module is the array clamping assembly or the first truss portion.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] First, the present invention uses multiple linear drive mechanisms to jointly output four linear degrees of freedom, and relies on dynamic parameter adjustment to drive the array clamp assembly and other related components to achieve the transportation and installation of cast-in-place beam metal structures and adapt functional modules for construction operations. This solves the technical shortcomings of traditional technologies such as passive parameter adaptation and direct pump pipe routing, which are difficult to adapt to large-span construction sections and difficult to adapt to construction workers, effectively meeting practical application and practicality requirements.

[0033] 2. This device can perform self-propelled synchronous construction based on different construction sections of a large span. According to the different construction positions and distance parameters that may be brought about by different construction sections, it relies on multiple linear drive mechanisms to jointly output four sets of linear degrees of freedom based on themselves for linkage, and relies on dynamic parameter adjustment and adaptation to effectively meet the actual application and practicality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from one viewing angle;

[0036] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention from another perspective;

[0037] Figure 3 It is a schematic diagram of the three-dimensional coordination structure of the frame and the linear drive mechanism of the present invention;

[0038] Figure 4 Schematic diagram of the three-dimensional structure of the linear drive mechanism of the present invention;

[0039] Figure 5 It is a schematic diagram of the three-dimensional structure of the linear drive mechanism cooperating with the first truss part of the present invention;

[0040] Figure 6 It is a schematic diagram of the three-dimensional structure of the linear drive mechanism cooperating with the array clamping assembly of the present invention;

[0041] Figure 7 Schematic diagram of the three-dimensional structure of the second, third and fourth linear degree of freedom output parts in the linear drive mechanism of the present invention;

[0042] Figure 8 For the present invention Figure 7 Area B is a schematic diagram of the three-dimensional structure of the first linear module;

[0043] Figure 9 Schematic diagram of the three-dimensional structure of the third linear module of the linear drive mechanism of the present invention;

[0044] Figure 10 This is a schematic diagram of the scaffolding construction according to the present invention;

[0045] Figure 11 A schematic diagram of loading based on the hierarchical nature of the benchmark process of the present invention.

[0046] Figure numerals: 1. Frame; 2. Wheel-track portion; 3. Linear drive mechanism; 301. First frame; 302. Second frame; 303. First linear module; 304. Second linear module; 305. Third linear module; 306. Third frame; 4. Array clamping assembly; 5. First truss portion; 6. Second truss portion. DETAILED DESCRIPTION

[0047] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0048] It should be noted that the terms "first," "second," "symmetrical," "array," etc. are used only to distinguish descriptions from positional descriptions and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of the number of features.

[0049] In the present invention, unless otherwise expressly specified or limited, terms such as "installation," "connection," and "fixation" should be understood broadly; for example, they may refer to fixed connection, detachable connection, or integral molding; they may refer to mechanical connection, direct connection, welding, or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specification and drawings in conjunction with specific circumstances.

[0050] The basic process of cast-in-place beam construction involves installing formwork on supports, tying the steel reinforcement frame, and pouring concrete on-site. However, for the construction of long-span, continuous, cast-in-place beams in multiple sections, traditional construction methods are limited by practical factors and external conditions, resulting in the following technical drawbacks:

[0051] 1. Parameters such as the pier height coefficient are passive parameters generated based on the design and require the construction personnel to adapt them by themselves. 2. Due to the long span characteristics, the direct laying of pump pipes cannot effectively allocate specific and variable implementation sections, resulting in the above-mentioned technical and subsequent problems. 3. Based on actual conditions, for the actual construction conditions in situation "1", there are many temporary structural measures and the installation and disassembly are cumbersome. Several temporary piers need to be built, which places high demands on the foundation. The bearing capacity and deformation of the foundation bearing layer and the weak underlying layer need to be reviewed and calculated to ensure that they are within the allowable range. In addition, for the foundation range where the support scaffolding pipes are to be erected for the entire span, the bearing capacity and deformation of the foundation must meet the requirements. The generation of variables is essentially an uncontrollable phenomenon. For this reason, please refer to Figure 1-9, the present invention provides a technical solution: a segmented construction device for a long continuous cast-in-situ beam with a large span, comprising a frame 1;

[0052] The frame 1 is the outer shape of the functional components of the entire device and the outer limit space where all the linear degrees of freedom described below are interconnected. Its overall projection is rectangular. The frame 1 is adapted to the three-reference plane projection of the cast-in-place beam, and its two ends are driven by the power unit.

[0053] In some specific embodiments of this application, please refer to Figures 1-2 : The power unit shown in the figure is preferably a wheel track unit 2, and the wheel track units 2 are symmetrically mounted at both ends of the frame 1;

[0054] In this solution, the wheel track unit 2 is essentially a drive module in the form of a crawler vehicle. Based on the actual construction section, it is responsible for carrying the frame 1 and its assembled components for movement and position adjustment. The drive mode with an increased force area increases friction, and when used on a specific construction site, the strong grip reduces the relative pressure on the ground, making it less likely to cause wheel sinking. The track shoes of the wheel track unit 2 are equipped with friction grooves and spikes to prevent slippage in rain, snow, ice, and other construction sites, ensuring construction accuracy.

[0055] And in actual application, the entire device is based on the reference position of the frame 1 for construction work;

[0056] In some specific embodiments of this application, please refer to Figure 3 : A linear drive mechanism 3 is symmetrically provided on the outside of the frame 1, and the linear drive mechanism 3 simultaneously outputs the first, second, third and fourth linear degrees of freedom;

[0057] It should be noted that in this specific embodiment, the above-mentioned "first, second, third and fourth linear degrees of freedom" are only used as different names for driving modes, and do not refer to the quantity;

[0058] In this solution, the first linear degree of freedom drives the second linear degree of freedom along the Y axis, the second linear degree of freedom drives the third linear degree of freedom along the X axis, and the third linear degree of freedom drives the fourth linear degree of freedom along the Z axis;

[0059] It should be noted that in this specific embodiment, all descriptions related to the axial direction are based on the Cartesian coordinate system;

[0060] In some specific embodiments of this application, please refer to Figures 3-4 : The fourth linear degree of freedom drives the array clamping assembly 4 and the first truss part 5, which are respectively used to carry and install the cast-in-place beam metal structure and adapt the functional module for construction operations.

[0061] Specifically, each of the four sets of linear degrees of freedom outputs a linearly based degree of freedom, and the specific stroke of this degree of freedom is unrestricted; its specific output parameters are determined based on actual design indicators or the different specifications and models used by this device. It should be noted that the above four sets of linear degrees of freedom are based on and serve as the basis for dynamic driving of the construction drive mode required by this device;

[0062] In some specific embodiments of this application, please refer to Figures 3 to 8 : The linear drive mechanism 3 includes a first frame 301 and a second frame 302 slidingly fitted outside the first frame 301; the two second frames 302 are driven by the first linear degree of freedom and the second linear degree of freedom respectively in the above order;

[0063] In this embodiment, the number of the first frame 301 and the second frame 302 is unlimited, and their height parameters are also unlimited; the number of drives for the first and second linear degrees of freedom and the amount of travel for controlling the third and fourth linear degrees of freedom are determined in the actual application stage;

[0064] Preferably, see Figure 6 A first frame 301 is fixed to the frame 1 along the Y-axis, and a second frame 302 is connected to another first frame 301 in cooperation with the first frame 301. The other first frame 301 is slidably engaged with another second frame 302 along the X-axis. In the above assembly method, the two sets of second frames 302 are driven based on the axial engagement reference to realize the first linear degree of freedom and the second linear degree of freedom respectively. The control of the starting points of the first and second linear degrees of freedom is realized based on the above axial engagement relationship between the two sets of first frames 301 and second frames 302.

[0065] In some specific embodiments of this application, please refer to Figures 3 to 8 : The linear drive mechanism 3 includes a first linear module 303; the first linear module 303 is installed between the first frame 301 and the second frame 302, and outputs a linear-based degree of freedom.

[0066] Based on the application of the above specific embodiment, the number of the first linear modules 303 is preferably eight, that is, outputting four first linear degrees of freedom and four second linear degrees of freedom that do not interfere with each other;

[0067] Specifically, the four first linear degrees of freedom are symmetrically arranged at both ends of the frame 1; at one end of the frame 1, the two first linear degrees of freedom respectively drive the second frame 302 along the Y-axis to drive the first frame 301, which is fixedly engaged with it rather than slidingly engaged with it, to be raised and lowered along the Y-axis;

[0068] Similarly, the above four second linear degrees of freedom are all provided on the first frame 301 that can be adjusted in the Y-axis direction, and the driving stroke starting points of the third and fourth linear degrees of freedom are determined in the X-axis direction;

[0069] In this solution, based on the aforementioned driving principle, the frame 1 is driven based on the environmental position of the wheel track 2. The single set of coordinated first and second linear degree of freedom adjustment array clamping components 4 and the first truss portion 5 are adjusted along a spatial trajectory in the Y and X axes. Based on the actual construction conditions and their parametric characteristics, the specified spatial adjustment is performed to meet the corresponding parametric adjustment of the driving construction operation.

[0070] Preferably, please refer to Figures 6-8 The first linear module 303 preferably includes a motor and a gear-rack assembly driven by the motor, wherein the gear-rack assembly is composed of a mutually meshing gear and rack. The motor is mounted on the second frame 302, and the rack is mounted on the first frame 301. The two first linear modules 303 output a first linear degree of freedom and a second linear degree of freedom. The first and second linear degrees of freedom are achieved by utilizing the characteristics of the gear and rack that transmit motion and power between any two axes. The specific parameters of the gear-rack assembly used in this device under the unloaded state are 100 m / s and the transmitted power is 900 kW. Based on the high load characteristics of this device, the tooth surfaces of the gear-rack assembly are heat-treated to HRC30-HRC35.

[0071] Preferably, the motor is a brake servo motor to improve the operational safety and controllability of the overall device;

[0072] In this solution, based on the above driving principle, please refer to Figures 6-8 : The linear drive mechanism 3 also includes a second linear module 304 arranged along the Z-axis and a third linear module 305 arranged along the Y-axis; the second linear module 304 is installed on the second frame 302 and drives and adjusts the third linear module 305; the third linear module 305 drives the third frame 306 vertically downward; the third frame 306 is connected to the array clamping assembly 4 or the first truss part 5.

[0073] In this embodiment, based on the formation of the first and second linear degrees of freedom, the third and fourth linear degrees of freedom are driven based on the position of the second linear degree of freedom. The second linear degree of freedom generated by the second linear module 304 drives the third linear module 305 to adjust the position in the Z-axis direction. Simultaneously, the third linear module 305 uses its own power to adjust the array clamping assembly 4 and the first truss portion 5 in the Y-axis direction.

[0074] It should be noted that in this specific embodiment, the first and third linear degrees of freedom drive the X and Z axes respectively; under the premise of relative changes in spatial position, the first and third linear degrees of freedom can also drive the Z and X axes respectively; this is generally non-limiting;

[0075] It should be noted that in this specific embodiment, the second and fourth linear degrees of freedom are both based on the Y-axis lifting drive; their functionality in actual application is different: the second linear degree of freedom is based on adjusting the general spatial height of the third and fourth linear degrees of freedom, while the fourth linear degree of freedom is used to adjust the construction height of the functional module, that is, the array clamping assembly 4 or the first truss part 5;

[0076] It can be understood that in this specific embodiment, based on the above-mentioned drive assembly mode, the two sets of second linear degrees of freedom at the left and right ends respectively drive the two third and fourth linear degrees of freedom; that is, in this specific embodiment, the final fourth linear degree of freedom can be installed in the array clamping assembly 4 or the first truss part 5 respectively. The specific construction operation mode can be modularly assembled based on actual applications to meet the variable adaptation function of actual construction operations.

[0077] Preferably, the second linear module 304 and the third linear module 305 are both telescopic cylinders. The cylinder body of the telescopic cylinder of the second linear module 304 is fixedly fitted to the second frame 302 that generates the second linear degree of freedom; and the piston rod of the telescopic cylinder is fixedly fitted to the cylinder body of the telescopic cylinder of the third linear module 305. The piston rod of the telescopic cylinder of the third linear module 305 is vertically downwardly mounted to the array clamp assembly 4 or the first truss portion 5.

[0078] Preferably, the telescopic cylinder is a hydraulic cylinder with high load performance; the outside of the frame 1 needs to be equipped with a hydraulic oil tank and an oil pump powered by the hydraulic cylinder, wherein the connection of the pipeline relies on the external laying of the drag chain for synchronous position adjustment, which needs to be laid based on the frame 1.

[0079] In some specific embodiments of this application, please refer to Figures 6-8 The array clamping assembly 4 and the first truss portion 5 shown in the figure are based on the above-mentioned assembly, and their specific functions are:

[0080] 1. Array Clamping Assembly 4: Based on an external frame (area A in the figure), electric clamps are evenly arranged in an array. Based on actual construction work, the formwork, steel bar skeleton, or ribbed beams, columns, connectors and other assembly parts of large-span cast-in-place beams are clamped according to parameters and moved to the specified position for assembly. Traditionally, the spacing and pitch of the steel pipe scaffolding poles are determined by the construction workers' disassembly and assembly control. In this specific embodiment, based on the linkage relationship of the above four sets of linear degrees of freedom, the array clamping assembly 4 can be universally adjusted within a certain space. It uses the first linear degree of freedom to determine the approximate height of the required installation component, the second linear degree of freedom to determine its depth, the third linear degree of freedom to determine the double-end center distance of the cast-in-place beam construction section, and the fourth linear degree of freedom to determine the specific assembly position of the cast-in-place beam construction section, cooperating with the construction workers to carry out construction.

[0081] Second, the first truss section 5 adopts modular truss assembly; workers can be placed on the first truss section 5, and the first truss section 5 can determine its specific spatial position through the above-mentioned four sets of linear degrees of freedom, and carry the workers to the designated location to assemble the above-mentioned assembly parts. Simultaneously, functional devices such as pump pipes can be installed on the outside of the truss to carry out point-to-point operation in the form of direct material distribution, using a ground pump to pump concrete to the beam surface and then cooperating with a moving horizontal pump pipe to distribute the material. At the same time, in order to meet the requirements of multiple relays of the pier height pump pipe, the above-mentioned first, second, third and fourth linear degrees of freedom can be used for position adjustment;

[0082] In this solution, the third linear degree of freedom determines the double-end center distance of the cast-in-place beam construction section, that is, the fourth linear degree of freedom at both ends of the frame 1 can simultaneously install two sets of array clamping components 4 for synchronous operation;

[0083] In this solution, the array clamping assembly 4 itself can be equipped with a linear degree of freedom based on a ball screw linear module to drive each electric claw in the array clamping assembly 4 to adjust its position, so as to better adapt to the operation drive of the entire device and the assembly requirements of external assembly parts;

[0084] In this solution, based on the high dust and humid environment in which this device is used, its entire electrical components must be dustproof and waterproof; at the same time, its connections should also be waterproof;

[0085] At the same time, based on the linkage between the first, second, third and fourth linear degrees of freedom, when the electrical components based on the above four groups of linear degrees of freedom are displaced, the frame 1 of the device needs to be equipped with a corresponding drag chain device on the outside, through which the power wires of the electrical components are adapted to the device and adjusted synchronously with the position changes of the above electrical components;

[0086] In this solution, the device needs to be used with existing ground facilities such as pump pipes and ground pumps in traditional technologies; the entire device is powered by mains electricity; at the same time, a controller is also provided on the outside of the frame 1 for pre-programming and controlling the operation of the entire electrical or hydraulic components in the device; it can also be equipped with a wireless sensor module for remote control by staff;

[0087] In some specific embodiments of this application, please refer to Figures 1-2 the second truss portion 6 can be installed with distance measurement, positioning and sensing components commonly used in construction projects, such as laser rangefinders, position sensors, electronic levels, building layout instruments or searchlights, etc., to add more functions to the overall device.

[0088] The various technical features of the specific embodiments described above can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the specific embodiments described above are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] Example 1

[0090] To make the purposes, features, and advantages of the above-described specific embodiments of the present invention more readily apparent, the following detailed description of the process of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0091] Based on the device provided in the above specific embodiment, this embodiment provides a construction method for a segmented construction device for a long continuous cast-in-situ beam with a large span:

[0092] S1. Determine and construct the foundation pit or foundation site for the large-span cast-in-place beam;

[0093] S2. Drive the device into the foundation site and level and position the cast-in-place beam;

[0094] S3, driving the device to the construction site, and using the rectangular frame of the frame 1 to cover or attach to the construction site;

[0095] S4. Pre-assemble the array clamping assembly 4 and the first truss portion 5 at both ends or multiple sections of the linear drive mechanism 3. The specific assembly is determined by the on-site staff based on the external characteristics and parameters of the cast-in-situ beam to be constructed, or other external environmental factors or construction process constraints.

[0096] S5, the staff logs into the first truss part 5 and the second truss part 6;

[0097] S6. Based on actual construction operations, the formwork, steel bar skeleton, or ribbed beams, columns, connectors and other assembly parts of large-span cast-in-place beams are clamped according to parameters and moved to the designated position for assembly;

[0098] S7, the linkage relationship between the first, second, third and fourth linear degrees of freedom, the array clamping assembly 4 can be universally adjusted in a certain space; it determines the approximate height of the required installation components through the first linear degree of freedom, determines its depth through the second linear degree of freedom, determines the double-end center distance of the cast-in-place beam construction section through the third linear degree of freedom, and determines the specific assembly position of the cast-in-place beam construction section through the fourth linear degree of freedom, and cooperates with the construction personnel to carry out construction; according to the first truss part 5, its specific spatial position is determined through the above four groups of linear degrees of freedom and the staff are transported to the designated position to assemble the above-mentioned assembly parts; synchronously, a pump pipe can also be set on the outside of the truss, and point-to-point operation is carried out in the form of direct material distribution, and concrete is pumped to the beam surface by a ground pump and then coordinated with the mobile horizontal pump pipe for material distribution; at the same time, in response to the multiple relay requirements of the pier height pump pipe, the above-mentioned first, second, third and fourth linear degrees of freedom can be used for position adjustment;

[0099] S8: The current construction section is completed, and the entire device is transported to the next construction section; S1 to S8 are repeated to complete the entire construction.

[0100] The above-described embodiments merely represent implementation methods of the present invention in practical applications. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

[0101] Example 2

[0102] To make the purposes, features, and advantages of the above-described specific embodiments of the present invention more readily apparent, the following detailed description of the process of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0103] Based on the device provided in the above specific embodiment, this embodiment provides a construction method for a segmented construction device for a long continuous cast-in-situ beam with a large span:

[0104] S1. Determine and construct the foundation pit or foundation site for the large-span cast-in-place beam;

[0105] S2. Drive the device into the foundation site and level and position the cast-in-place beam;

[0106] S3, driving the device to the construction site, and using the rectangular frame of the frame 1 to cover or attach to the construction site;

[0107] S4. Pre-assemble the array clamping assembly 4 and the first truss portion 5 at both ends or multiple sections of the linear drive mechanism 3. The specific assembly is determined by the on-site staff based on the external characteristics and parameters of the cast-in-situ beam to be constructed, or other external environmental factors or construction process constraints.

[0108] S5, the staff logs into the first truss part 5 and the second truss part 6;

[0109] S6. Based on actual construction operations, the formwork, steel bar skeleton, or ribbed beams, columns, connectors and other assembly parts of large-span cast-in-place beams are clamped according to parameters and moved to the designated position for assembly;

[0110] S7, the linkage relationship between the first, second, third and fourth linear degrees of freedom, the array clamping assembly 4 can be universally adjusted in a certain space; it determines the approximate height of the required installation components through the first linear degree of freedom, determines its depth through the second linear degree of freedom, determines the horizontal position of the cast-in-place beam construction section through the third linear degree of freedom, and determines the specific assembly position of the cast-in-place beam construction section through the fourth linear degree of freedom to cooperate with the construction personnel in construction; according to the first truss part 5, its specific spatial position is determined through the above four groups of linear degrees of freedom and the workers are transported to the designated position to assemble the above-mentioned assembly parts; synchronously, a pump pipe can also be set on the outside of the truss, and point-to-point operation is carried out in the form of direct material distribution, and concrete is pumped to the beam surface by a ground pump and then coordinated with the mobile horizontal pump pipe for material distribution; at the same time, in response to the multiple relay requirements of the pier height pump pipe, the above first, second, third and fourth linear degrees of freedom can be used for position adjustment;

[0111] S8: The current construction section is completed, and the entire device is transported to the next construction section; S1 to S8 are repeated to complete the entire construction.

[0112] The above-described embodiments merely represent implementation methods of the present invention in practical applications. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

[0113] Example 3

[0114] To make the purposes, features, and advantages of the above-described specific embodiments of the present invention more readily apparent, the following detailed description of the process of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0115] Based on the device provided in the above specific embodiment, this embodiment provides a construction method for a segmented construction device for a long continuous cast-in-situ beam with a large span:

[0116] S1. Determine and construct the foundation pit or foundation site for the large-span cast-in-place beam;

[0117] S2. Drive the device into the foundation site and level and position the cast-in-place beam;

[0118] S3, driving the device to the construction site, and using the rectangular frame of the frame 1 to cover or attach to the construction site;

[0119] S4. Pre-assemble the array clamping assembly 4 and the first truss portion 5 at both ends or multiple sections of the linear drive mechanism 3. The specific assembly is determined by the on-site staff based on the external characteristics and parameters of the cast-in-situ beam to be constructed, or other external environmental factors or construction process constraints.

[0120] S5, the staff logs into the first truss part 5 and the second truss part 6;

[0121] S6. Based on actual construction operations, the formwork, steel bar skeleton, or ribbed beams, columns, connectors and other assembly parts of large-span cast-in-place beams are clamped according to parameters and moved to the designated position for assembly;

[0122] S7. The linkage relationship between the first, second, third and fourth linear degrees of freedom allows the array clamping assembly 4 to be universally adjusted within a certain space. The first linear degree of freedom determines the approximate height of the required installation components, the second linear degree of freedom determines its depth, the third linear degree of freedom determines the horizontal position of the cast-in-place beam construction section, and the fourth linear degree of freedom determines the specific assembly position of the cast-in-place beam construction section to cooperate with the construction personnel. The first truss part 5 is only provided with a pump pipe on the outside of the truss, and a point-to-point operation is performed in the form of direct material distribution. The concrete is pumped to the beam surface by a ground pump and then the material is distributed in the form of a mobile horizontal pump pipe. At the same time, the first, second, third and fourth linear degrees of freedom are used to adjust the position to meet the multiple relay requirements of the pier height pump pipe.

[0123] S8: The current construction section is completed, and the entire device is transported to the next construction section; S1 to S8 are repeated to complete the entire construction.

[0124] Example 4

[0125] To make the purposes, features, and advantages of the above-described specific embodiments of the present invention more readily apparent, the following detailed description of the process of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0126] This embodiment is based on the first, second and third embodiments:

[0127] The construction plan for cast-in-situ box girders is based on a complete set of formwork for the entire bridge (including inner and outer formwork); the full-height buckle brackets and falsework are configured in sets;

[0128] The number of single sets of materials (i.e., "assemblies" in the specific embodiment) collected and carried by the overall device includes:

[0129]

[0130]

[0131] In addition to the devices disclosed in the specific embodiments, the functional devices used in conjunction with this device (i.e., the "functional devices" in the specific embodiments) also include:

[0132]

[0133]

[0134] In the above-mentioned devices, the concrete mixing and transporting device, the automobile crane device, the flatbed truck, the pump station, the mixing station, the electric welder, the steel bar bending machine, the steel bar cutting machine, the CNC steel bar bending machine, the CNC steel bar hoop bending machine, the transformer, the plug-in vibrating rod, the air compressor, the generator, the intelligent tensioning device, and the intelligent grouting device are all existing construction devices, and in this embodiment, they are all installed at the first truss part 5, the second truss part 6 or the array clamping assembly 4. The specific assembly form and drive form have been described in the specific embodiment and will not be repeated here.

[0135] In this embodiment, the construction work of the designated part is all cast in two times; preferably, the first casting is to 5 cm of the chamfer on the bottom plate, the casting height is 0.3-2.5m, and the second casting is for the remaining part.

[0136] The maximum one-time pouring volume of cast-in-place box girder concrete is 1200m 3 , the pouring volume at one time is relatively large, so the pouring speed should not be too fast;

[0137] The projects in which this device is used are characterized by large supporting volumes, making full-height scaffolding impossible. Therefore, when necessary, this device can be constructed using scaffolding. The use of disc-type scaffolding for the remaining cast-in-place sections can shorten the construction period. However, the height of the scaffolding and the spacing between the poles place high demands on the stability of the poles and the bearing capacity of the foundation, requiring appropriate selection and parameterization for this device.

[0138] For details, please refer to Figure 10 The two-stage pouring process involves pouring the first portion up to 5cm above the chamfer on the bottom plate, followed by pouring the top plate and wing plates. The entire section is cast in one go, without any longitudinal seams.

[0139] In the following description, all installation and matching components, parameter adjustments, and processes are based on the movements of the relevant components in the first, second, and third embodiments, and the specific implementation methods;

[0140] The layout of the scaffolding from bottom to top is: φ630 spiral tube (length 14-32m, wall thickness 1cm) + horizontal 45b I-beam load-bearing beam + longitudinal Bailey beam + horizontal 20b I-beam distribution beam + bracket + horizontal double-jointed 10b I-beam + square wood (10*10cm) + high-strength bamboo plywood (15mm thick).

[0141] Spiral pipe piles, 14-32m long, are arranged transversely between the webs and flanges, with a total of 7 piles in a single row and 15 rows longitudinally spaced 5-9m apart, for a total of 210 piles in a double span. 72 45b I-beams are installed as load-bearing beams on the spiral pipe piles. Bailey beams are installed longitudinally along the load-bearing beams, with 36 transverse beams located transversely between the flanges, webs, and the middle of the webs. 20b I-beams are placed transversely on the Bailey beams, with center-to-center spacing of 60-90cm. Scaffolding is then erected on the I-beams.

[0142] Specifically, this device is used to construct the external cast-in-place beam support: the support system is erected on a hardened foundation under the bridge, and a 20*5cm wooden pad is placed on the foundation to conform to the external environment. The adjustable base is placed on the wooden pad. The disc-shaped bracket extends from the bottom to the bottom of the box beam. The outer side of the support frame is connected to the longitudinal horizontal rod through steel pipe fasteners to construct a protective bracket. The outer side of the steel pipe edge protection bracket is covered with a dense mesh. When the frame height exceeds 8m, a horizontal steel pipe scissors brace is installed on each bottom layer of the frame. At the same time, a horizontal safety net is installed at a height of 3m and on the top layer of the frame.

[0143] The height of the bottom layer of horizontal rods (sweeping rods) from the supporting ground should be controlled to no more than 35cm. The standard pitch is 150cm with one layer of horizontal rods. The top layer of horizontal rods can be arranged in a layer of 120cm intervals according to the height of the top adjustment section. When the free length of the vertical rod at the top without horizontal rod restraint (including the top support height) is greater than 70cm, one layer of horizontal rods shall be installed for restraint.

[0144] Transverse direction: the distance between vertical poles in the main bridge section is 60-120cm; the distance between vertical poles in the approach bridge section is 90cm at the web; the distance between the hollow horizontal bottom plate and the flange is 120cm, and the distance between the vertical poles is 150cm below the cantilever.

[0145] Longitudinal bridge direction: the spacing of the main bridge section is 30-90cm, and the spacing between the bottom plate and the wing plate of the approach bridge section is 120cm;

[0146] Step distance: 1.5m for both.

[0147] The support height is adjusted using top and bottom supports. Lower supports are used to support the rods on the laid timber planks. Upper supports are used to support the horizontal I14 I-beams and longitudinal timber planks. Horizontal braces should be installed when the frame height exceeds 8 meters. One horizontal brace should be installed at the top and bottom, with an additional one in the middle if necessary. Reinforcement spacing should be no greater than 5 meters. I14 I-beams should be installed horizontally on the supports, and 10×10cm timber planks should be installed vertically. 15mm thick bamboo plywood should be used for formwork.

[0148] Transverse distribution beam: I14 I-beam is laid on the top support in the transverse direction of the bridge as a distribution beam, 10×10cm square wood with a back rib spacing of 10cm is used in the direction of the bridge, and 15mm bamboo plywood bottom formwork is laid on the square wood.

[0149] Bottom formwork: The bottom formwork, side formwork and box beam inner formwork are all assembled and made of 15mm high-quality bamboo plywood.

[0150] Wing plate: The flange adopts I14 I-steel shaped truss, which is arranged along the bridge direction and the arrangement spacing is consistent with the transverse distribution beam of the bottom plate.

[0151] Construction of upper and lower passages: Upper and lower passages are constructed at both ends of the cast-in-place beams. The net width of the passage is not less than 1m. Safety guardrails are installed on the edges of the passages. The height of the guardrails is 1.2m. Dense safety nets and safety warning signs are installed on the edge guardrails.

[0152] Edge protection: To ensure safety during construction, edge protection railings are installed next to the outer brackets of the box girder flange plate. The edge protection railings are made of φ48×3.2mm steel pipes, and the steel pipes are connected to the adjacent brackets with fasteners. The height of the edge protection railings is 1.5m and they are covered with construction safety nets for protection.

[0153] After completing the above steps, the surveyor will measure the vertical projection of the beam slab on the foundation and mark it with white lime. The on-site technician will then determine the centerline of the bottom row based on the projection line and also mark it with white lime. The buckle brackets will be arranged symmetrically on both sides of the centerline.

[0154] In this embodiment, the installation process of the cast-in-place beam support based on this device is based on the above specific implementation method:

[0155] (1) Install the vertical poles and horizontal bars in sequence from bottom to top according to the design combination of the vertical poles and horizontal bars. First, install all the vertical poles and part of the horizontal bars of a working surface at the bottom. Then install them layer by layer and install all the horizontal bars at the same time. After the vertical poles and horizontal bars are installed, consider the overall stability of the bracket and set a horizontal scissors brace according to steps 4-6. When installing, connect them from bottom to top. The diagonal brace is connected to the bracket through connecting components. When installing, try to arrange it on the frame node. A dedicated person should check the tightness of the bracket buckle. The frame is firmly tied to the main structure. The safety net is set after the scissors brace is set.

[0156] (2) When assembling the bracket, the longitudinal straightness, right angle and levelness of the horizontal frame should be controlled.

[0157] (3) After the bracket is assembled, use the theodolite to check the horizontality of the crossbar and the verticality of the vertical pole. In the absence of load, check whether the base of the vertical pole is loose or floating, and tighten the adjustable seat and thin steel plate adjustment pad in time.

[0158] (4) After the support frame is erected, its plane position, top elevation, node connection and longitudinal and lateral stability should be comprehensively checked. Only when they meet the requirements can the next step of construction be carried out.

[0159] (5) The steel pipes for the disc-type bracket shall not be rusted, bent, flattened or cracked.

[0160] (6) The screw of the U-shaped support at the top of the bracket should not extend more than 30cm from the top of the steel pipe. The gap between the outer diameter of the screw and the inner diameter of the vertical steel pipe should not be greater than 3mm. The top and bottom should be concentric during installation.

[0161] (7) Top support installation: To facilitate high-altitude work on the bracket, and to save time and safety, the top support extension can be roughly adjusted on the ground before being transported to the top of the bracket for installation. The cross-section spacing is determined according to the change in the bottom elevation of the beam, and three control points are set on the left, middle, and right to accurately adjust the top support elevation. Then, the top support extension is clearly marked for verification. Finally, the wire interpolation method is used to adjust the elevation of each top support in turn. The top support extension should generally be controlled within 30 cm.

[0162] In this embodiment, based on the basic process of pre-pressing the support system of this device, please refer to Figure 11 :

[0163] The preloading weight, as per design requirements, is 120% of the concrete's own weight. Preloading should be carried out as closely as possible to the order of concrete pouring. Preloading should be carried out from the mid-span outward, finishing with a 3m section on each side of the abutment's top. (The loading sequence and speed should be essentially the same as for beam construction.) Concentrated stacking is prohibited. The loading sequence follows the concrete pouring order, with loading progressing from 20% to 60% to 80% to 100% to 120%, starting with the bottom plate and web, followed by the top plate and flange. Before preloading, the beam bottom sections are laid out, divided, and numbered to determine the load distribution. Rebar is pre-formed and delivered by crane. Once hoisted onto the rack, the rebar is stacked according to the calculated load distribution. During loading, the rebar is stacked strictly according to the calculated weight. When stacking the rebar, leave observation points clear to allow for vertical insertion of a level rod for observation. Observation and recording are made for each load level throughout the loading process. The next level of loading is applied 30 minutes after the support has been stressed. And measure the changes of observation points at any time; according to the actual situation, arrange a row of observation points every 5 meters along the route, with 3 points in each row;

[0164] The above-described embodiments merely represent implementation methods of the present invention in practical applications. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A segmented construction device for long continuous cast-in-situ beams with a large span, characterized in that: The invention comprises a frame (1); the frame (1) is adapted to the three-reference plane projection of the cast-in-place beam, and the two ends of the frame (1) are driven to move by a power unit; a linear drive mechanism (3) is symmetrically provided on the outside of the frame (1), and the linear drive mechanism (3) outputs the first, second, third and fourth linear degrees of freedom; the first linear degree of freedom drives the second linear degree of freedom along the Y axis, the second linear degree of freedom drives the third linear degree of freedom along the X axis, and the third linear degree of freedom drives the fourth linear degree of freedom along the Z axis; the fourth linear degree of freedom drives an array clamping component (4) and a first truss part (5), which are respectively used for carrying and installing the cast-in-place beam metal structure and adapting the functional module to perform construction operations; The linear drive mechanism (3) comprises a first frame (301) and a second frame (302) slidingly fitted on the outside of the first frame (301); one of the first frames (301) is fixed to the frame (1) along the Y-axis, and the second frame (302) fitted therewith is connected to another first frame (301), and another first frame (301) is slidingly fitted with another second frame (302) along the X-axis; the two second frames (302) in the above order are respectively driven by the first linear degree of freedom and the second linear degree of freedom.

2. The segmented construction device for long continuous cast-in-situ beams with a large span according to claim 1 is characterized in that: The power part is a wheel track part (2), and the wheel track parts (2) are symmetrically installed at both ends of the frame (1).

3. The segmented construction device for long continuous cast-in-situ beams with a large span according to claim 1 is characterized in that: The linear drive mechanism (3) comprises a first linear module (303); the first linear module (303) is installed between the first frame (301) and the second frame (302), and outputs a linear-based degree of freedom.

4. The segmented construction device for long continuous cast-in-situ beams with a large span according to claim 3 is characterized in that: The first linear module (303) includes a motor and a gear rack assembly driven by the motor, wherein the gear rack assembly is composed of a gear and a rack that mesh with each other, the motor is mounted on the second frame (302), and the rack is mounted on the first frame (301); the two first linear modules (303) output the first linear degree of freedom and the second linear degree of freedom.

5. The segmented construction device for a long continuous cast-in-situ beam with a large span according to claim 3 or 4, characterized in that: The linear drive mechanism (3) further comprises a second linear module (304) arranged along the Z-axis and a third linear module (305) arranged along the Y-axis; the second linear module (304) is mounted on the second frame (302) and drives and adjusts the third linear module (305); the third linear module (305) drives the third frame (306) vertically downward; the third frame (306) is connected to the array clamping assembly (4) or the first truss portion (5).

6. The segmented construction device for long continuous cast-in-situ beams with a large span according to claim 5 is characterized in that: The second linear module (304) and the third linear module (305) are both telescopic cylinders.

7. The segmented construction device for long continuous cast-in-situ beams with a large span according to claim 5 is characterized in that: The first linear degree of freedom carries at least two of the second linear degrees of freedom simultaneously.

8. A construction method for a long-span continuous cast-in-situ beam segmented construction device, applied to the long-span continuous cast-in-situ beam segmented construction device according to claim 1, characterized in that: The following steps are involved: S1, after leveling and positioning the cast-in-place beam, drives the linear drive mechanism (3) to output the first, second, third and fourth linear degrees of freedom, completes the construction work of carrying and installing the metal structure of the cast-in-place beam and adapting the functional module; S2, drives the frame (1) to move along the construction section and performs S1 again; S3, cyclically performs S1 and S2 until the construction is completed.

9. The construction method of the segmented construction device for a long continuous cast-in-situ beam with a large span according to claim 8 is characterized in that: In said S1, the array clamping assembly (4) and the first truss part (5) are used to complete the transportation and installation of the cast-in-place beam metal structure and the construction work of the adapted functional module.

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