Internal lateral pouring test device and detection method for plane X-shaped inclined column grid

Abstract

The present invention relates to a lateral pouring test device and detection method for the interior of a planar X-shaped inclined column grid, including the steps of: connecting the upper half of the skewed joint and the lower half of the grid inclined column to form a planar X-shaped inclined column grid structure; selecting the detection positions of the inclined column cross-section; obtaining the detection results; determining the pouring quality; and supplementing the detection. The beneficial effects of the present invention are: the structural system has a reasonable structure, the process method is simple and effective, giving full play to the advantages of consistent models, identical conditions, and reasonable and effective processes of the lateral pouring model test device and detection method for the interior concrete of the planar X-shaped inclined column grid, achieving the simulation of the internal concrete lateral pouring construction process and the simulation of the concrete density detection process for the X-shaped skewed grid joints and inclined column grid members with complex internal diaphragms while improving the lateral pouring process and ensuring the bearing performance; achieving the purpose of saving costs and accelerating the construction operation while ensuring the structural mechanical properties.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural engineering, and particularly relates to a lateral pouring test device and a detection method for the interior of a planar X-shaped inclined column grid. Background Art

[0002] The skewed grid system is a super high-rise steel structure system composed of two-way or three-way inclined column members intersecting and rigidly connected. It has the advantages of light self-weight, high lateral stiffness, and high height, so it is widely used in super high-rise large public buildings with building functions such as commerce and office.

[0003] Since the inclined column members are mainly axial force members with extremely high lateral stiffness, the skewed grid system mainly bears horizontal forces such as earthquake and wind loads through the vertical grids formed by the intersection of inclined column members. For the sake of space utilization and material economy, the inclined column members generally adopt box-shaped cross-sections. When there are architectural restrictions on the side length dimensions of the cross-section, concrete can be poured inside to strengthen it, while minimizing the member cross-section while ensuring its stiffness and load-bearing performance. At this time, the steel pipe and the internal concrete participate in bearing the load simultaneously.

[0004] The density quality of the internal concrete is an important factor in ensuring the mechanical properties of the overall system. However, due to reasons such as the inclination of the columns in the skewed column grid system, the complex structure of the skewed intersection nodes, and the large number of internal diaphragms in the nodes, there are mainly two difficulties in ensuring the pouring density of the concrete inside the steel pipe in actual engineering: one is the concrete pouring process, and the other is the density detection layout plan. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a lateral pouring test device and a detection method for the interior of a planar X-shaped inclined column grid.

[0006] This lateral pouring test device for the interior of a planar X-shaped inclined column grid includes an upper half skewed intersection node, a lower half grid inclined column, an anti-overturning inclined support, an anchoring and limiting foundation, a peripheral framework platform, and an imaging detection device;

[0007] The upper half skewed intersection node includes a first end of an upper inclined column member, a second end of an upper inclined column member, a first end of a lower inclined column member, a second end of a lower inclined column member, and a core area stiffening plate combination; the first end of the upper inclined column member and the second end of the upper inclined column member are installed above the core area stiffening plate combination, and the first end of the lower inclined column member and the second end of the lower inclined column member are installed below the core area stiffening plate combination; horizontal steel beam corbels one and two are provided on the side of the core area stiffening plate combination;

[0008] The lower half grid inclined column includes a first steel pipe inclined column member and a second steel pipe inclined column member; the first steel pipe inclined column member and the second steel pipe inclined column member are respectively butted with the first end of the lower inclined column member and the second end of the lower inclined column member;

[0009] The upper half oblique intersection nodes and the lower half grid oblique columns form a plane X-shaped oblique column grid structure, and the plane X-shaped oblique column grid structure is fixedly connected to the anti-overturning oblique support; the plane X-shaped oblique column grid structure and the anti-overturning oblique support are fixed to the ground through anchor limit foundations; the peripheral frame platform is arranged on the outside; the detection position on the plane X-shaped oblique column grid structure is connected to the imaging detection device.

[0010] Preferably, the anti-overturning inclined support comprises two anti-overturning steel inclined supports; a top support conversion piece is installed on the top of the anti-overturning steel inclined support through an upper end joint, and the top support conversion piece is connected to the center of gravity position of the plane X-shaped inclined column grid structure.

[0011] As a preferred embodiment: the anchoring and limiting foundation includes a grid column foot foundation and an oblique support column foot foundation; the bottoms of the steel pipe oblique column member 1 and the steel pipe oblique column member 2 are both provided with bottom fixed end plates, and the bottom fixed end plates are fixed to the grid column foot foundation through bottom embedded parts; the bottom of the anti-overturning support frame is provided with a lower end joint, and the lower end joint is fixed to the oblique support column foot foundation through bottom embedded parts;

[0012] The outer sides of the grid column base and the inclined support column base are both provided with limiting flanges; flange embedded reinforcement is arranged at the bottom of the limiting flange.

[0013] As a preferred embodiment: the inner side wall plates of the upper inclined column component end 1 and the upper inclined column component end 2 are provided with pouring holes, and the pouring holes are connected to the concrete pouring device;

[0014] A transverse partition is provided at the top cross section of the upper oblique column component end 1 and the upper oblique column component end 2, and a first end surface flow hole is provided; a transverse partition is provided at the bottom cross section of the lower oblique column component end 1 and the lower oblique column component end 2, and a second end surface flow hole is provided; an upper horizontal flange plate flow hole and a lower horizontal flange plate flow hole are provided on the core area stiffening plate assembly;

[0015] The top ends of the steel pipe inclined column component 1 and the steel pipe inclined column component 2 are both provided with end transverse partitions, and inclined column end surface flow holes are opened.

[0016] Preferably, the outer frame platform comprises vertical poles, horizontal support poles, steel floor panels and inclined steel ladders; the outer frame platform adopts scaffolding steel pipes and finished inclined steel ladders, and is constructed around the plane X-shaped inclined column grid overall structural model and anti-overturning inclined supports.

[0017] As a preferred embodiment: the cross-section of the upper inclined column member end head 1 and the upper inclined column member end head 2 is box-shaped, and the cross-section side length is 500-1000mm; the pouring hole, the first end surface flow hole, the second end surface flow hole, the upper horizontal flange plate flow hole and the lower horizontal flange plate flow hole are all oblong, and the diameter is 200-400mm;

[0018] The cross-sections of the first and second steel pipe inclined column members are box-shaped, with the side length dimension of the cross-section being 500 - 1000 mm; the cross-section of the anti-overturning steel section inclined support is H-shaped, with the cross-section height being 300 - 500 mm;

[0019] Preferably: The imaging detection device includes a measuring line arrangement system and an ultrasonic CT imaging system; the measuring line arrangement system includes an arrangement one exciter, an arrangement one detector located on one pair of opposite sides of the steel pipe, an arrangement two exciter, and an arrangement two detector located on the other pair of opposite sides of the steel pipe; the arrangement method of the measuring line arrangement system is two arrangements, and each arrangement includes 20 - 40 excitation points and 20 - 40 detection points.

[0020] The detection method of this in-plane X-shaped inclined column grid internal lateral pouring test device includes the following steps:

[0021] S1. Connect the upper half of the skewed joint and the lower half of the grid inclined column to form an in-plane X-shaped inclined column grid structure; then install an anti-overturning inclined support at the centroid position of the overall structure of the in-plane X-shaped inclined column grid, and carry out vertical support and column base fixed limit measures on the bottom of the in-plane X-shaped inclined column grid structure and the anti-overturning inclined support through the anchoring limit foundation; build an outer frame platform around the in-plane X-shaped inclined column grid structure and the anti-overturning inclined support; use a concrete pouring device to carry out lateral pouring of concrete through the pouring holes;

[0022] S2. Select the detection positions of the inclined column cross-section: Install the measuring line arrangement system on the skewed joint detection cross-section and the grid inclined column detection cross-section respectively, and the measuring line arrangement system is connected to the ultrasonic CT imaging system;

[0023] S3. Obtain the detection results: Use the ultrasonic CT imaging method to obtain data such as the average wave velocity, wave velocity dispersion, qualified rate area, and maximum defect scale, and obtain the wave velocity distribution diagram and intensity distribution diagram at the positions of the skewed joint detection cross-section and the grid inclined column detection cross-section respectively;

[0024] S4. Determine the pouring quality: According to the results of the average wave velocity, wave velocity dispersion, qualified rate area, and maximum defect scale, when all 4 determination parameters are met, the concrete quality requirements are achieved; when 1 parameter is not met, a comprehensive determination should be made according to the specific situation; when 2 or more parameters are not met, it is unqualified;

[0025] S5. Supplementary detection: Cut open the test model to conduct supplementary detection of cracks and cavities, and the cutting positions include the model cutting section plane.

[0026] Preferably, in step S3: The wave velocity distribution diagram is directly obtained through the measurement of the average wave velocity, and the intensity distribution diagram is obtained through comprehensive determination of the four measurement results.

[0027] Preferably, in step S4: for the insufficient compactness of the concrete, the drilling and grouting method is used for reinforcement, that is, after drilling at the position where the compactness is insufficient, high-strength concrete one grade higher is used for high-pressure grouting, and then it is welded and sealed back.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1) The internal side-pouring test device and detection method for the plane X-shaped inclined column grid provided by the present invention have a reasonable structural system and a simple and effective process method. It can realize the simulation of the internal concrete side-pouring construction process and the simulation of the concrete compactness detection process for the X-shaped inclined intersection grid nodes and inclined column grid members with complex internal partitions, and give full play to the advantages of consistent model, same conditions and reasonable and effective process of the internal concrete side-pouring model test device and detection method for the plane X-shaped inclined column grid.

[0030] 2) The internal side-pouring test device and detection method for the plane X-shaped inclined column grid provided by the present invention combine the upper half of the inclined intersection nodes and the lower half of the grid inclined columns into an overall structural model of the plane X-shaped inclined column grid, and through the anti-overturning inclined supports and the anchoring and limiting foundation for vertical support and column foot fixing and limiting measures, and through the peripheral frame platform and the imaging detection device to realize the side-pouring of concrete and the imaging detection of strength distribution, thus forming an overall test device and detection mode. It can achieve the simulation of the internal concrete side-pouring construction process and the simulation of the concrete compactness detection process for the X-shaped inclined intersection grid nodes and inclined column grid members with complex internal partitions while improving the side-pouring process and ensuring the bearing performance.

[0031] 3) Based on the side-pouring model test and detection analysis, the test device and detection method of the present invention control the strength, stress, lateral deformation and period ratio by means of indicators such as the strength distribution imaging, bearing capacity control, overall lateral stiffness and torsional resistance of the overall space K-shaped inclined column grid, and improve the rationality and effectiveness of the overall model test device and detection method.

[0032] 4) The internal concrete side-pouring model test device and detection method for the plane X-shaped inclined column grid of the present invention can effectively meet the design strength and compactness requirements of the concrete inside the grid inclined columns and inclined intersection nodes, solve the two difficulties of the concrete side-pouring process and the compactness detection layout scheme; and can be extended to the actual engineering structure, simplify the detection method, and achieve the purpose of saving cost and accelerating the construction operation while ensuring the structural mechanical properties. Description of the Drawings

[0033] Figure 1 is a schematic structural diagram of the side-pouring model test device (where Figure 1a is the overall structural schematic diagram of the present invention, Figure 1b is a schematic diagram of the upper half of the inclined intersection nodes, Figure 1c is a schematic diagram of the lower half of the grid inclined columns, Figure 1dIt is a schematic diagram of the anti-overturning inclined support, Figure 1e It is a schematic diagram of the anchoring and limiting foundation, Figure 1f It is a schematic diagram of the peripheral framework platform, Figure 1g It is a schematic diagram of the imaging detection device);

[0034] Figure 2 It is Figure 1a The front view structural schematic diagram of the A-A section in;

[0035] Figure 3 It is Figure 1a The side view structural schematic diagram of the B-B section in;

[0036] Figure 4 It is Figure 1a The bottom plane schematic diagram of the C-C section in;

[0037] Figure 5 is Figure 4 The side view of the anchoring and limiting foundation of the D-D section in (where Figure 5a It is the sectional schematic diagram of the bottom column foot foundation and the limiting flange of the lower half grid inclined column, Figure 5b It is the sectional schematic diagram of the bottom column foot foundation and the limiting flange of the anti-overturning inclined support);

[0038] Figure 6 It is the measuring line layout schematic diagram of the imaging detection device;

[0039] Figure 7 It is the schematic diagram of the detection cross-section position arrangement;

[0040] Figure 8 is the schematic diagram of the ultrasonic CT imaging result (where Figure 8a It is the wave velocity distribution schematic diagram, Figure 8b It is the strength distribution schematic diagram);

[0041] Figure 9 It is the schematic diagram of the model cutting section plane arrangement;

[0042] Figure 10 It is the application scenario schematic diagram of the present invention;

[0043] Figure 11 It is the lateral pouring process and imaging detection flow chart of the present invention.

[0044] Description of reference numerals in the drawings: End 1 of the upper inclined column member, End 2 of the upper inclined column member, End 1 of the lower inclined column member, End 2 of the lower inclined column member, Horizontal steel beam corbel 1, Horizontal steel beam corbel 2, Core area stiffening plate assembly 7, Pouring hole 8, First end face flow-through hole 9, Upper horizontal flange plate flow-through hole 10, Lower horizontal flange plate flow-through hole 11, Second end face flow-through hole 12, Steel pipe inclined column member 1, Steel pipe inclined column member 2, Inclined column end face flow-through hole 15, Bottom fixed end plate 16, Upper end joint 17, Lower end joint 18, Anti-overturning steel section inclined support 19, Top support conversion member 20, Grid column footing foundation 21, Inclined support column footing foundation 22, Bottom embedded part 23, Limit flange 24, Flange embedded bar 25, Vertical upright rod 26, Horizontal support rod 27, Steel floor slab 28, Inclined steel ladder 29, Array 1 exciter 30, Array 1 geophone 31, Array 2 exciter 32, Array 2 geophone 33, Oblique intersection node detection cross-section 34, Grid inclined column detection cross-section 35, Survey line layout system 36, Ultrasonic CT imaging system 37, Wave velocity distribution schematic diagram 38, Strength distribution schematic diagram 39, Model cutting section 40, Application position of the middle plane X-type node 41, Concrete pouring device 42. Detailed implementation manners

[0045] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0046] Embodiment 1

[0047] As an embodiment, such as Figures 1a-1g and Figures 2-4As shown, this plane X-shaped inclined column grid internal lateral pouring test device and detection method include an upper half oblique node, a lower half grid oblique column, an anti-overturning oblique support, an anchoring limit foundation, a peripheral frame platform and an imaging detection device. The upper half oblique node is located at the top, and is composed of the end of the box-type oblique column member and the horizontal steel beam corbel converging and obliquely intersecting at the core area stiffening plate assembly to form a plane X-shaped node, and a plurality of internal partitions with concrete flow holes are arranged inside; the lower half grid oblique column is located at the bottom, and is composed of two oblique box-type steel pipe oblique column members and an oblique column bottom plate, and is connected with the end of the oblique column member of the upper half oblique node to form a plane X-shaped oblique column grid overall structure model; the anti-overturning oblique support is located at the rear side, and is a lateral steel support structure of the plane X-shaped oblique column grid overall structure model, and is arranged in pairs on both sides to prevent it from overturning; the anchoring limit foundation is located at the bottom, including the lower half grid oblique column The bottom column foot foundation, the bottom column foot foundation of the anti-overturning inclined support and the limiting flange on the side of the bottom column foot foundation play the role of vertical support and horizontal limiting of the plane X-shaped inclined column grid overall structural model, and the anti-overturning inclined support; the peripheral frame platform is located on the outside, including vertical poles, horizontal support poles, steel floor panels and inclined steel ladders, forming a working platform for people to operate for lateral concrete pouring and imaging detection; the imaging detection device includes a survey line layout system and an ultrasonic CT imaging system, the survey line layout system is composed of an exciter and a detector arranged on the opposite sides, and the ultrasonic CT imaging system reflects the density distribution of the internal concrete poured laterally by displaying the imaging results of the intensity distribution diagram.

[0048] like Figure 1b , Figures 2-4 As shown, the upper half of the oblique node is formed by the oblique column member end and the horizontal steel beam corbel converging and intersecting obliquely at the core area stiffening plate assembly, including an upper oblique column member end 1, an upper oblique column member end 2, a lower oblique column member end 3, a lower oblique column member end 4, a horizontal steel beam corbel 1 5, a horizontal steel beam corbel 2 6 and a core area stiffening plate assembly 7, forming a plane X-shaped oblique node; the upper half of the oblique node is mainly used to rigidly connect the upper and lower node layers of the oblique grid super-high-rise steel structure system, forming a grid tube lateral force resisting structural system with extremely large lateral stiffness.

[0049] like Figure 1b , Figure 2 As shown, the upper oblique column member end 1 and the upper oblique column member end 2 of the upper half oblique node are located above the floor at the node elevation, and are therefore suitable for lateral pouring of concrete inside the steel pipe; pouring holes 8 are opened on the inner wall panels of the upper oblique column member end 1 and the upper oblique column member end 2, and through the internal side pouring method, the lateral pouring of concrete inside the steel pipe and the installation of the upper steel structure can be achieved simultaneously, thereby accelerating the construction progress.

[0050] like Figure 1b , Figure 2As shown in the figure, multiple internal partition plates with concrete flow holes are arranged inside the upper half of the skewed intersection joint to achieve effective concrete flow inside the skewed intersection joint; a diaphragm plate is arranged at the top cross-section of the end of the upper inclined column member, and a first end-face flow hole 9 is opened; a diaphragm plate is arranged at the bottom cross-section of the end of the lower inclined column member, and a second end-face flow hole 12 is opened; upper horizontal flange plate flow holes 10 and lower horizontal flange plate flow holes 11 are respectively opened at the upper flange plate and the lower flange plate of the core area stiffening plate assembly 7.

[0051] As Figure 1b , Figure 2 shown, in this embodiment, the skew angles between the end of the upper inclined column member 1 and the end of the upper inclined column member 2, and between the end of the lower inclined column member 1 and the end of the lower inclined column member 2 are both 28.4°. The cross-section of the end of the inclined column member is a box-shaped cross-section, the side length dimension of the box-shaped cross-section is 750 mm, and the diameter of the flow hole is 250 mm.

[0052] As Figure 1b , Figure 2 shown, due to the large cross-section of the grid inclined column members in the super high-rise building with a skewed grid system, the large pouring height of each segment and the presence of multiple node stiffening ribs inside the members, high-throw self-compacting concrete is used for lateral pouring during construction, and at the same time, local vibration treatment is considered at the inclined column joints.

[0053] As Figure 1c , Figures 2-4 shown, the lower half of the grid inclined column is composed of two skewed steel pipe inclined column members 13, steel pipe inclined column member 14 and a bottom fixed end plate 16, and is butt-jointed with the end of the lower inclined column member 1 and the end of the lower inclined column member 2 of the upper half of the skewed intersection joint to form an overall structural model of a planar X-shaped inclined column grid; end diaphragm plates are arranged at the top butt-joints of the steel pipe inclined column member 13 and the steel pipe inclined column member 14, and inclined column end-face flow holes 15 are opened.

[0054] As Figure 1c , Figures 2-4 shown, at the bottom fixed end plate 16, it is fixed to the grid column foot foundation 21 through the bottom embedded part 23.

[0055] As Figure 1c , Figures 2-4 shown, the skew angle between the steel pipe inclined column member 13 and the steel pipe inclined column member 14 is 28.4°, the floor-to-floor distance is 8.7 m, the covered floor height is 4 floors, and the side length dimension of the box-shaped cross-section is 750 mm.

[0056] As Figures 1a-1c , Figures 2-4 shown, in this embodiment, the lateral pouring test device inside the X-shaped inclined column grid is fabricated at full scale of 1:1.

[0057] AsFigure 1d , Figures 2-4 As shown in Figures 2-4 , the anti-overturning inclined support is a lateral steel support structure of the overall structural model to prevent it from overturning; the structural form is an inclined support structure, which is composed of two pairs of anti-overturning steel inclined supports 19 arranged on both sides; the upper end joint 17 is set at the top of the anti-overturning inclined support and is supported in the area near the center of gravity height of the overall structural model through the top support conversion member 20.

[0058] As Figure 1d , Figures 2-4 shown in Figures 2-4 , the anti-overturning steel inclined support 19 is a lateral support structure; when overturning occurs due to external disturbances, it is the main lateral force resisting member; when there is no disturbance, it is not stressed; the cross-section of the member is an H-shaped cross-section, and the cross-section height dimension is 350 mm.

[0059] As Figure 1d , Figures 2-4 shown in Figures 2-4 , the lower end joint 18 is set at the bottom of the anti-overturning inclined support and is fixed to the inclined support column footing foundation 22 through the bottom embedded part 23, and stiffeners do not need to be set at the column footing connection.

[0060] As Figure 1e , Figures 2-4 shown in Figures 2-4 , the anchoring and limiting foundation includes a grid column footing foundation 21, an inclined support column footing foundation 22 and a limiting flange 24, which respectively play the roles of vertical support and horizontal limit for the overall structural model and the anti-overturning inclined support.

[0061] As Figure 1c , Figure 1e , Figures 2-4 shown in Figures 2-4 , for the grid column footing foundation 21, limiting flanges 24 are set on two outer sides, and both concrete flanges are in strip form, and the flange directions are set perpendicular to the X-shaped plane to limit the lateral movement of the overall structural model in the horizontal direction.

[0062] As Figures 1d-1e , Figures 2-4 shown in Figures 2-4 , for the inclined support column footing foundation 22, limiting flanges 24 are set at the bottom of the anti-overturning steel inclined support 19, and both concrete flanges are in strip form, and the flange directions are set parallel to the X-shaped plane to limit the front-back movement of the anti-overturning inclined support in the horizontal direction.

[0063] As Figure 1e , Figures 2-4 , Figures 5a-5b shown in Figures 5a-5b , at the bottom of the limiting flange 24, flanged planted bars 25 are set to be fixed on the rigid ground.

[0064] As Figure 1e , Figures 2-4 , Figures 5a-5bAs shown, in this embodiment, the plane side lengths of the grid column base foundation 21 and the inclined support column base foundation 22 are 1950mm and 900mm respectively, and the foundation heights are 700mm and 400mm respectively. Structural steel bars are arranged inside for reinforcement, and the limit flange height is 300mm.

[0065] like Figure 1a , Figure 1f , Figure 2 As shown, the outer frame platform is composed of vertical poles 26, horizontal support poles 27, steel floor panels 28 and inclined steel ladders 29, forming a working platform for people to operate for lateral concrete pouring and imaging detection.

[0066] like Figure 1a , Figure 1f , Figure 2 As shown, the outer frame platform is constructed using scaffolding steel pipes and finished inclined steel ladders to save the cost of the lateral pouring model test device.

[0067] like Figure 1a , Figure 1f , Figure 2 As shown, the outer frame platform is erected around the overall structural model of the plane X-shaped inclined column grid and the anti-overturning inclined support, which can be inserted, connected and assembled, and form a self-contained structural system to avoid affecting the lateral pouring quality of the concrete inside the plane X-shaped inclined column grid.

[0068] like Figure 1a , Figure 2 As shown, concrete is poured laterally inside the steel pipe by a concrete pouring device 42 . The concrete pouring device 42 includes a concrete delivery pump, a vibrating rod, etc. High-performance self-compacting concrete is used to achieve effective circulation of concrete inside the oblique node.

[0069] like Figure 1a , Figure 1g , Figure 6 As shown, the imaging detection device is composed of a survey line arrangement system 36 and an ultrasonic CT imaging system 37; the survey line arrangement system 36 includes an arrangement of an exciter 30 and a detector 31 located at one group of opposite sides of the steel pipe, and an arrangement of an exciter 32 and a detector 33 located at another group of opposite sides of the steel pipe; a total of two groups of excitation points and detection points.

[0070] like Figure 1a , Figure 1g , Figure 6 As shown, in this embodiment, each arrangement includes 30 excitation points and 30 detection points, and the distance between the striking point and the receiving point is 50 mm.

[0071] like Figure 1a , Figure 1g , Figures 8a-8bAs shown, the ultrasonic CT imaging system 37 reflects the density distribution of the internal concrete of the lateral pouring by displaying the imaging results of the intensity distribution schematic diagram 39.

[0072] As Figure 1a , Figure 2 , Figure 7 As shown, the detection positions of the cross-section of the inclined column member include the cross-section 34 for detecting the inclined intersection node and the cross-section 35 for detecting the grid inclined column; the cross-section 34 for detecting the inclined intersection node includes three typical positions, namely, near the lower side of the lower cross diaphragm of the inclined column joint at the inclined intersection node, near the lower flange plate of the inclined intersection node, and near the lower flange plate of the upper flange plate of the inclined intersection node; the cross-section 35 for detecting the grid inclined column includes two typical positions, namely, near the lower side of the cross diaphragm at the bottom of the inclined column and near the lower side of the lower cross diaphragm in the middle section of the inclined column.

[0073] As Figure 1a , Figure 2 , Figure 7 , Figures 8a-8b As shown, since the concrete density in the same detection cross-section is uneven, the corresponding concrete wave velocity is also different, and defect determination is carried out through the comprehensive evaluation of multiple statistical parameters; the determination parameters include average wave velocity, wave velocity dispersion, qualified rate area, and maximum defect scale.

[0074] As Figure 1a , Figure 2 , Figure 7 , Figures 8a-8b As shown, the wave velocity distribution schematic diagram 38 can be directly obtained by measuring the concrete wave velocity, while the intensity distribution schematic diagram 39 is obtained through the comprehensive determination of four measurement results; when all 4 determination parameters are met, the concrete quality requirements are achieved; when 1 parameter is not met, comprehensive determination should be carried out according to the specific situation; when 2 or more parameters are not met, it is unqualified.

[0075] As Figure 1a , Figures 2-4 , Figure 9 As shown, as a supplementary detection method, the test model can be further cut open to more intuitively view the density of the concrete inside the steel pipe, such as cracks, cavities, etc.; the cutting positions include the model cutting section 40.

[0076] As Figure 1a , Figure 10 As shown, the application scenarios of the lateral pouring model test device and detection method for the concrete inside the plane X-shaped inclined column grid include the application position 41 of the middle plane X-shaped node of the inclined intersection grid structure system or other similar situations.

[0077] Embodiment 2

[0078] As Figure 11As shown, for the lateral pouring test device inside the planar X-shaped inclined column grid in one embodiment, the specific process of its detection method is as follows:

[0079] S1. Establish a lateral pouring test device inside the planar X-shaped inclined column grid, including upper half skew joints, lower half grid inclined columns, anti-overturning inclined supports, anchoring and limiting foundations, peripheral framework platforms, and imaging detection devices;

[0080] S2. Select the detection positions of the inclined column cross-sections. The detection positions include the skew joint detection cross-section 34 and the grid inclined column detection cross-section 35;

[0081] S3. The imaging results of the detection positions of the inclined column cross-sections. The determination parameters include average wave velocity, wave velocity dispersion, qualified rate area, and maximum defect scale. The wave velocity distribution schematic diagram 38 is directly obtained through the measurement of the average wave velocity, and the strength distribution schematic diagram 39 is obtained through the comprehensive determination of the four measurement results;

[0082] S4. When all 4 determination parameters are met, the concrete quality requirements are achieved; when 1 parameter is not met, comprehensive determination should be carried out according to the specific situation; when 2 or more parameters are not met, it is unqualified;

[0083] S5. Cut the test model to conduct crack and cavity supplementary detection methods. The cutting positions include the model cutting section plane 40.

[0084] Embodiment 3

[0085] The present invention also provides an application of the lateral pouring test device and detection method inside the planar X-shaped inclined column grid in the simulation of the internal concrete lateral pouring construction process and the simulation of the concrete density detection process for the X-shaped skew grid joints and inclined column grid members with complex internal partitions; the application scenarios include the application position 41 of the middle planar X-shaped joints of the skew grid structure system or other similar situations.

[0086] Considering the engineering reference and practicality of the actual process, establish a full-scale model test device for the internal concrete lateral pouring of the X-shaped inclined column grid, and detect the density of the internally laterally poured concrete through ultrasonic CT technology to obtain a reasonable and effective lateral pouring process and apply it to similar actual projects.

[0087] For the detection layout and imaging detection scheme of the X-shaped inclined column grid, obtain and ensure the quality of the internal concrete lateral pouring of the overall structure, and provide a basis and reference for the lateral pouring method, quality detection, and layout scheme of the concrete-filled steel tube in the actual project of the inclined column grid system.

[0088] The technology of the present invention can effectively meet the requirements for the design strength and density of the concrete inside the grid inclined columns and skewed joints; for economic considerations, on the basis of adopting the same lateral pouring process, the conventional ultrasonic testing method is still used for the corresponding internal concrete testing of the entire inclined column grid system, and the corresponding judgment parameters are generally acoustic parameters such as wave velocity and waveform; for the deficiencies in the concrete density, the hole grouting method is used for reinforcement, that is, after drilling holes at the positions with insufficient density detection, high-strength concrete one grade higher is used for high-pressure grouting, and then it is welded and sealed back.

Claims

1. A lateral pouring test device inside a planar X-shaped inclined column grid, characterized in that, Including: The upper half diagonal intersection node, the lower half grid diagonal column, the anti-overturning diagonal bracing, the anchoring and limiting foundation, the peripheral framework platform, and the imaging detection device; the imaging detection device includes a measuring line arrangement system (36) and an ultrasonic CT imaging system (37); The upper half diagonal intersection node includes the upper diagonal column member end one (1), the upper diagonal column member end two (2), the lower diagonal column member end one (3), the lower diagonal column member end two (4), and the core area stiffening plate assembly (7); the upper diagonal column member end one (1) and the upper diagonal column member end two (2) are installed above the core area stiffening plate assembly (7), and the lower diagonal column member end one (3) and the lower diagonal column member end two (4) are installed below the core area stiffening plate assembly (7); horizontal steel beam corbels one (5) and two (6) are provided on the side of the core area stiffening plate assembly (7); The lower half grid diagonal column includes a steel pipe diagonal column member one (13) and a steel pipe diagonal column member two (14); the steel pipe diagonal column member one (13) and the steel pipe diagonal column member two (14) are respectively butted with the lower diagonal column member end one (3) and the lower diagonal column member end two (4); The upper half diagonal intersection node and the lower half grid diagonal column form a planar X-shaped diagonal column grid structure, and the planar X-shaped diagonal column grid structure is fixedly connected to the anti-overturning diagonal bracing; the planar X-shaped diagonal column grid structure and the anti-overturning diagonal bracing are fixed to the ground through the anchoring and limiting foundation; the peripheral framework platform is arranged on the outside; the detection position on the planar X-shaped diagonal column grid structure is connected to the imaging detection device; The anti-overturning diagonal bracing includes two anti-overturning steel section diagonal bracings (19); the top of the anti-overturning steel section diagonal bracing (19) is installed with a top support conversion member (20) through an upper end joint (17), and the top support conversion member (20) is connected to the centroid position of the planar X-shaped diagonal column grid structure; The anchoring and limiting foundation includes a grid column foot foundation (21) and a diagonal bracing column foot foundation (22); bottom fixed end plates (16) are provided at the bottoms of the steel pipe diagonal column member one (13) and the steel pipe diagonal column member two (14), and the bottom fixed end plates (16) are fixed to the grid column foot foundation (21) through bottom embedded parts (23); the bottom of the anti-overturning support frame is provided with a lower end joint (18), and the lower end joint (18) is fixed to the diagonal bracing column foot foundation (22) through the bottom embedded part (23); Limiting flanges (24) are provided on the outsides of the grid column foot foundation (21) and the diagonal bracing column foot foundation (22); flanged rebar (25) is arranged at the bottom of the limiting flange (24); Pouring holes (8) are provided on the inner side wall plates of the upper diagonal column member end one (1) and the upper diagonal column member end two (2), and the pouring holes (8) are connected to a concrete pouring device (42); Diaphragms are arranged at the top cross-sections of the upper diagonal column member end one (1) and the upper diagonal column member end two (2), and first end surface circulation holes (9) are opened; diaphragms are arranged at the bottom cross-sections of the lower diagonal column member end one (3) and the lower diagonal column member end two (4), and second end surface circulation holes (12) are opened; upper horizontal flange plate circulation holes (10) and lower horizontal flange plate circulation holes (11) are provided on the core area stiffening plate assembly (7); The top ends of the steel tube inclined column component 1 (13) and the steel tube inclined column component 2 (14) are both provided with end transverse partitions, and inclined column end surface flow holes (15) are provided.

2. The lateral pouring test device inside the planar X-shaped inclined column grid according to claim 1, wherein: The peripheral frame platform comprises vertical uprights (26), horizontal support rods (27), steel floor panels (28) and inclined steel ladders (29); the peripheral frame platform uses scaffolding steel pipes and finished inclined steel ladders, and is constructed around a flat X-shaped inclined column grid overall structural model and anti-overturning inclined supports.

3. The internal lateral pouring test device for the plane X-shaped inclined column grid according to claim 1, characterized in that: The cross-sections of the upper inclined column member end head 1 (1) and the upper inclined column member end head 2 (2) are box-shaped, and the side length of the cross-section is 500 to 1000 mm; the pouring hole (8), the first end surface flow hole (9), the second end surface flow hole (12), the upper horizontal flange plate flow hole (10) and the lower horizontal flange plate flow hole (11) are all oblong, and the diameter is 200 to 400 mm; The cross-sections of the steel tube inclined column member 1 (13) and the steel tube inclined column member 2 (14) are box-shaped, with a cross-sectional side length of 500 to 1000 mm; the cross-section of the anti-overturning steel inclined support (19) is H-shaped, with a cross-sectional height of 300 to 500 mm.

4. The lateral pouring test device inside the planar X-shaped inclined column grid according to claim 1, characterized in that: The survey line arrangement system (36) comprises an arrangement of exciters (30) and detectors (31) located at one set of opposite sides of the steel pipe, and an arrangement of exciters (32) and detectors (33) located at another set of opposite sides of the steel pipe; the survey line arrangement system is arranged in two arrangements, each arrangement comprising 20 to 40 excitation points and 20 to 40 detection points.

5. The detection method of the in-plane X-shaped inclined column grid internal side pouring test device according to claim 1, characterized in that The following steps are involved: S1. Connect the upper half oblique intersection nodes and the lower half grid oblique columns to form a plane X-shaped oblique column grid structure; then install the anti-overturning oblique support at the center of gravity of the plane X-shaped oblique column grid structure, and use the anchoring limit foundation to vertically support the bottom of the plane X-shaped oblique column grid structure and the anti-overturning oblique support and fix the column foot; Build a peripheral frame platform around the flat X-shaped inclined column grid structure and anti-overturning inclined supports; Using a concrete pouring device (42) to perform lateral pouring of concrete through the pouring holes (8); S2, selecting the oblique column cross section detection position: installing a survey line arrangement system (36) at the oblique node detection cross section (34) and the grid oblique column detection cross section (35), respectively, and the survey line arrangement system (36) is connected to the ultrasonic CT imaging system (37); S3. Obtaining the test results: using ultrasonic CT imaging method to obtain data on average wave velocity, wave velocity dispersion, qualified rate area and maximum defect size, and respectively obtaining wave velocity distribution diagram (38) and intensity distribution diagram (39) of the oblique node test cross section (34) and the grid oblique column test cross section (35); S4. Determine the pouring quality: According to the results of average wave velocity, wave velocity dispersion, qualified area and maximum defect size, when all four determination parameters are met, the concrete quality requirements are met; when one item is not met, a comprehensive judgment should be made based on the specific situation; when two or more items are not met, it is unqualified; S5. Supplementary testing: cutting the test model to conduct supplementary testing for cracks and voids, the cutting position including the model cutting section (40).

6. The detection method of the in-plane X-shaped inclined column grid internal side pouring test device according to claim 5, characterized in that, In step S3: The wave velocity distribution schematic diagram (38) is directly obtained through the average wave velocity measurement, and the intensity distribution schematic diagram (39) is obtained through the comprehensive determination of the four measurement results.

7. The detection method of the in-plane X-shaped inclined column grid internal side pouring test device according to claim 5, characterized in that, In step S4: For the deficiencies in the concrete density, the drilling and grouting method is used for reinforcement, that is, after drilling at the position where the density is insufficient, high-strength concrete one grade higher is used for high-pressure grouting, and then it is welded and sealed back.

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