LU503088B1 - Assembly-superposition utility tunnel test model and manufacturing method thereof - Google Patents

Assembly-superposition utility tunnel test model and manufacturing method thereof Download PDF

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Publication number
LU503088B1
LU503088B1 LU503088A LU503088A LU503088B1 LU 503088 B1 LU503088 B1 LU 503088B1 LU 503088 A LU503088 A LU 503088A LU 503088 A LU503088 A LU 503088A LU 503088 B1 LU503088 B1 LU 503088B1
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LU
Luxembourg
Prior art keywords
superposition
prefabricated
assembly
model
steel bar
Prior art date
Application number
LU503088A
Other languages
German (de)
Inventor
Yongqing Li
Yanmin Yang
Jiayi Li
Binlin Zhang
Original Assignee
Univ Jilin Jianzhu
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Priority to LU503088A priority Critical patent/LU503088B1/en
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Publication of LU503088B1 publication Critical patent/LU503088B1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

An assembly-superposition utility tunnel test model and a manufacturing method thereof, belongs urban underground space engineering field. Prefabricated superposition side plate, vertical assembly steel bar, axil-angle diagonal steel bar and cast-in-place concrete are included. The prefabricated superposition side plate includes precast concrete layer, ring stirrup and longitudinal bar. Four prefabricated superposition side plates are arranged, the ring stirrups of two adjacent prefabricated superposition side plates are connected at the corner by the vertical assembly steel bar, and the longitudinal bars of two adjacent prefabricated superposition side plates are connected at the corner by the axil-angle diagonal steel bar to form a rectangular reinforced framework of a pipe gallery model. The cast-in-place concrete arranges outside the reinforced framework. Disclosure conducts the seismic test research of an earthquake simulation shaking table. The model for seismic test reflects the real change law of the structure of utility tunnel under the earthquake load.

Description

ASSEMBLY-SUPERPOSITION UTILITY TUNNEL TEST MODEL AND LU503088
MANUFACTURING METHOD THEREOF
BACKGROUNG OF THE INVENTION
1. Technical Field
The present disclosure belongs to the technical field of urban underground space engineering, and in particular relates to an assembly-superposition utility tunnel test model and a manufacturing method thereof. 2. Description of Related Art
An assembly-superposition urban underground utility tunnel is a sustainable green building, which has the advantages of unified management, convenience for maintenance, long service life of pipelines, etc., compared with traditional embedded pipelines, and has the advantages of short production cycle, convenience for construction, resource saving, etc, compared with an integral cast-in-place utility tunnel.
The urban underground utility tunnel is obviously affected by earthquake. When it encounters an earthquake disaster, the safety performance and bearing capacity of the structure may be significantly reduced, and the lifeline system will be damaged to varying degrees. The traditional seismic research method of pipe gallery is pseudo-static test, which cannot completely simulate the real seismic load. Therefore, a new technical solution is urgently needed in the prior art to solve this problem.
SUMMARY
The technical problem to be solved by the disclosure is to provide an assembly-superposition utility tunnel test model and a manufacturing method thereof,
which may more conveniently conduct the seismic test research of an earthquake LU503088 simulation shaking table. The manufacturing process thereof is simple, the assembly-superposition manufacturing method of the pipe gallery structure may be restored, and the test controllability is high. Using the model to replace the original structure for the seismic test research may reflect the real change law of the structure of utility tunnel under the earthquake load.
The technical content of the disclosed as follows: an assembly-superposition utility tunnel test model, comprising a prefabricated superposition side plate, a vertical assembly steel bar, an axil-angle diagonal steel bar, and cast-in-place concrete, wherein the prefabricated superposition side plate comprises a precast concrete layer, a ring stirrup and a longitudinal bar, the ring stirrup and the longitudinal bar being arranged crosswise to form a superposition plate reinforced framework, the precast concrete layer being arranged inside the superposition plate reinforced framework, four prefabricated superposition side plates being arranged, the ring stirrups of two adjacent prefabricated superposition side plates being connected at the corner by the vertical assembly steel bar, the longitudinal bars of two adjacent prefabricated superposition side plates being connected at the corner by the axil-angle diagonal steel bar to form a rectangular reinforced framework of a pipe gallery model, and the cast-in-place concrete being arranged outside the reinforced framework of the pipe gallery model.
The precast concrete layer is fine stone concrete with design strength of C40.
The cast-in-place concrete is self-compacting concrete with design strength of
C40.
The vertical assembly steel bar, the axil-angle diagonal steel bar, the ring stirrup, and the longitudinal bar are all ¢6 steel bars.
The width and thickness of the prefabricated superposition side plate are 1/2 of the LU503088 overall width and thickness of a pipe gallery.
The scale ratio of the pipe gallery test model is 1: 6.
A manufacturing method of an assembly-superposition utility tunnel test model, comprising the following steps, the following steps being conducted in sequence: step 1: manufacture of a prefabricated superposition side plate binding according to the designed size of the prefabricated superposition side plate and the reinforcement size in the plate, a ring stirrup and a longitudinal bar to form a reinforced framework of the prefabricated superposition side plate, manufacturing a prefabricated superposition side plate mold with a reserved hole, putting the bound reinforced framework of the prefabricated superposition side plate into the reserved hole of the mold, pouring fine stone concrete to a designed thickness, vibrating aggregate uniformly with a vibrating table, and then conducting curing and demoulding to complete the manufacture of the prefabricated superposition side plate;
Step 2: Assembly of pipe gallery model preparing, according to step 1, four prefabricated superposition side plates, staggering and overlapping the ring stirrups of the four prefabricated plates up and down, inserting a vertical assembly steel bar into a gap of the overlapped steel bars, and binding same along the outer corner, and inserting an axil-angle diagonal steel bar into a joint of the steel bars of two adjacent prefabricated superposition side plates and binding same, so as to complete the manufacture of a reinforced framework of the pipe gallery model; and step 3: pouring of cast-in-place concrete manufacturing, according to the size of the reinforced framework of the pipe gallery model prepared in step 2, a wooden mold, placing the wooden model placed in the reinforced framework of the pipe gallery model on a vibrating table and pouring LU503088 the cast-in-place concrete until aggregate is uniformly distributed, and then completing pouring and curing of the pipe gallery model to obtain an assembly-superposition utility tunnel test model.
The technical solution of the disclosure has the following beneficial effects: an assembly-superposition utility tunnel test model and a manufacturing method thereof may more conveniently conduct the seismic test research of an earthquake simulation shaking table. The manufacturing process thereof is simple, the assembly-superposition manufacturing method of the pipe gallery structure may be restored, and the test controllability is high. Using the model to replace the original structure for the seismic test research may reflect the real change law of the structure of utility tunnel under the earthquake load.
The further beneficial effects of the present disclosure are: (1) since a template is manufactured according to the position of a reinforced framework, the accuracy thereof is relatively high, and the error may be controlled within the accuracy of 5 mm; (2) compared with a traditional manufacturing process of an assembly-superposition pipe gallery, the manufacturing process of this model omits a precast concrete layer, making it relatively simple and convenient, and retaining the manufacturing method of assembly and superposition; (3) according to a principle of quasi-dimensional analysis, the scale ratio, materials and reinforcement are determined, and the original structure is reduced with equal strength, so that the test model has the structural characteristics of the original model, and the reaction law of the original structure is reflected through a test result, thus achieving the purpose of the scaled model test; and
(4) the method has the advantages of simple operation, low cost and easy LU503088 availability of required materials in the market.
BRIEF DESCRIPTION OF THE DRAWINGS
5 The present disclosure will be further described below in combination with the accompanying drawings and specific implementation modes:
FIG. 1 is a schematic diagram of an assembly structure of an assembly-superposition utility tunnel test model according to the present disclosure;
FIG. 2 is a schematic structural diagram of a prefabricated superposition side plate of an assembly-superposition utility tunnel test model according to present the disclosure;
FIG. 3 is a schematic structural diagram of superposition of a concrete layer of an assembly-superposition utility tunnel test model according to the disclosure; and
FIG. 4 is a schematic diagram of normal cross-section reinforcement of an assembly-superposition utility tunnel test model according to the disclosure.
In the drawings: 1-prefabricated superposition side plate; 2-precast concrete layer;
S-ring stirrup; 6-longitudinal bar; 7-vertical assembly steel bar; 8-axil-angle diagonal steel bar; and 9-cast-in-place concrete.
DETAILED DESCRIPTION OF EMBODIMENTS
As shown in FIGs. 1 to 4, an assembly-superposition utility tunnel test model includes a prefabricated superposition side plate 1, a vertical assembly steel bar 7, an axil-angle diagonal steel bar 8, and cast-in-place concrete 9. The prefabricated superposition side plate 1 includes a precast concrete layer 2, a ring stirrup 5 and a longitudinal bar 6. The ring stirrup 5 and the longitudinal bar 6 are arranged crosswise to form a superposition plate reinforced framework, and the precast concrete layer 2 is LU503088 arranged inside the superposition plate reinforced framework. Four prefabricated superposition side plates 1 are arranged, the ring stirrups 5 of two adjacent prefabricated superposition side plates 1 are connected at the corner by the vertical assembly steel bar 7, and the longitudinal bars 6 of two adjacent prefabricated superposition side plates 1 are connected at the corner by the axil-angle diagonal steel bar 8 to form a rectangular reinforced framework of a pipe gallery model. The cast-in-place concrete 9 is arranged outside the reinforced framework of the pipe gallery model.
The precast concrete layer 2 is fine stone concrete with design strength of C40.
The cast-in-place concrete 9 is self-compacting concrete with design strength of
C40.
The vertical assembly steel bar 7, the axil-angle diagonal steel bar 8, the ring stirrup 5, and the longitudinal bar 6 are all 6 steel bars. The reinforcement ratio of the model is determined according to the principle of equal strength, so that same can meet the test strength requirements, and reduce the model test error, thereby restoring the real test response of a component.
The width and thickness of the prefabricated superposition side plate 1 are 1/2 of the overall width and thickness of a pipe gallery.
The dimension, reinforcement and materials of the pipe gallery model in the disclosure are determined by a "quasi-dimensional analysis method" based on the principle of dimensional analysis, and the scale of the pipe gallery model is reduced according to a test purpose and the range limit of a test device, and the scale ratio of the pipe gallery test model is 1: 6.
A manufacturing method of an assembly-superposition utility tunnel test model includes the following steps and the following steps are conducted in sequence. LU503088
Step 1: Manufacture of a prefabricated superposition side plate 1
According to the designed size of the prefabricated superposition side plate 1 and the reinforcement size in the plate, a ring stirrup 5 and a longitudinal bar 6 are bound to form a reinforced framework of the prefabricated superposition side plate 1, a prefabricated superposition side plate 1 mold with a reserved hole is manufactured, the bound reinforced framework of the prefabricated superposition side plate 1 is put into the reserved hole of the mold, fine stone concrete is poured to a designed thickness, aggregate is vibrated uniformly with a vibrating table, and then curing and demoulding are conducted to complete the manufacture of the prefabricated superposition side plate 1.
Step 2: Assembly of pipe gallery model
According to step 1, four prefabricated superposition side plates 1 are prepared, the ring stirrups 5 of the four prefabricated plates are staggered and overlapped up and down, a vertical assembly steel bar 7 is inserted into a gap of the overlapped steel bars, and is bound along the outer corner, and an axil-angle diagonal steel bar 8 is inserted into a joint of the steel bars of two adjacent prefabricated superposition side plates 1 and bound, so as to complete the manufacture of a reinforced framework of the pipe gallery model.
Step 3: Pouring of cast-in-place concrete 9
According to the size of the reinforced framework of the pipe gallery model prepared in step 2, a wooden mold is manufactured, the wooden model placed in the reinforced framework of the pipe gallery model is placed on a vibrating table and the cast-in-place concrete 9 is poured until aggregate is uniformly distributed, and then pouring and curing of the pipe gallery model is completed to obtain an assembly-superposition utility tunnel test model. LUS05088
The disclosure improves the traditional pipe gallery construction process, and has the characteristics of high precision, convenience for manufacture, greatly shortened construction period and the like.

Claims (7)

What is claimed is LUS05088
1. An assembly-superposition utility tunnel test model, comprising a prefabricated superposition side plate (1), a vertical assembly steel bar (7), an axil-angle diagonal steel bar (8), and cast-in-place concrete (9), wherein the prefabricated superposition side plate (1) comprises a precast concrete layer (2), a ring stirrup (5) and a longitudinal bar (6), the ring stirrup (5) and the longitudinal bar (6) being arranged crosswise to form a superposition plate reinforced framework, the precast concrete layer (2) being arranged inside the superposition plate reinforced framework, four prefabricated superposition side plates (1) being arranged, the ring stirrups (5) of two adjacent prefabricated superposition side plates (1) being connected at the corner by the vertical assembly steel bar (7), the longitudinal bars (6) of two adjacent prefabricated superposition side plates (1) being connected at the corner by the axil-angle diagonal steel bar (8) to form a rectangular reinforced framework of a pipe gallery model, and the cast-in-place concrete (9) being arranged outside the reinforced framework of the pipe gallery model.
2. The assembly-superposition utility tunnel test model of claim 1, characterized in that the precast concrete layer (2) is fine stone concrete with design strength of C40.
3. The assembly-superposition utility tunnel test model of claim 1, characterized in that the cast-in-place concrete (9) 1s self-compacting concrete with design strength of
C40.
4. The assembly-superposition utility tunnel test model of claim 1, characterized in that the vertical assembly steel bar (7), the axil-angle diagonal steel bar (8), the ring stirrup (5), and the longitudinal bar (6) are all 6 steel bars.
5. The assembly-superposition utility tunnel test model of claim 1, characterized in that the width and thickness of the prefabricated superposition side plate (1) are 1/2 of the overall width and thickness of a pipe gallery. LUS05088
6. The assembly-superposition utility tunnel test model of claim 1, characterized in that the scale ratio of the pipe gallery test model is 1: 6.
7. À manufacturing method of an assembly-superposition utility tunnel test model, comprising the following steps, the following steps being conducted in sequence: step 1: manufacture of a prefabricated superposition side plate (1) binding, according to the designed size of the prefabricated superposition side plate (1) and the reinforcement size in the plate, a ring stirrup (5) and a longitudinal bar (6) to form a reinforced framework of the prefabricated superposition side plate (1), manufacturing a prefabricated superposition side plate (1) mold with a reserved hole, putting the bound reinforced framework of the prefabricated superposition side plate (1) into the reserved hole of the mold, pouring fine stone concrete to a designed thickness, vibrating aggregate uniformly with a vibrating table, and then conducting curing and demoulding to complete the manufacture of the prefabricated superposition side plate (1); Step 2: Assembly of pipe gallery model preparing, according to step 1, four prefabricated superposition side plates (1),staggering and overlapping the ring stirrups (5) of the four prefabricated plates up and down, inserting a vertical assembly steel bar (7) into a gap of the overlapped steel bars, and binding same along the outer corner, and inserting an axil-angle diagonal steel bar (8) into a joint of the steel bars of two adjacent prefabricated superposition side plates (1) and binding same, so as to complete the manufacture of a reinforced framework of the pipe gallery model; and step 3: pouring of cast-in-place concrete (9) manufacturing, according to the size of the reinforced framework of the pipe gallery model prepared in step 2, a wooden mold, placing the wooden model placed in the LU503088 reinforced framework of the pipe gallery model on a vibrating table and pouring the cast-in-place concrete (9) until aggregate is uniformly distributed, and then completing pouring and curing of the pipe gallery model to obtain an assembly-superposition utility tunnel test model.
LU503088A 2022-11-18 2022-11-18 Assembly-superposition utility tunnel test model and manufacturing method thereof LU503088B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
LU503088A LU503088B1 (en) 2022-11-18 2022-11-18 Assembly-superposition utility tunnel test model and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU503088A LU503088B1 (en) 2022-11-18 2022-11-18 Assembly-superposition utility tunnel test model and manufacturing method thereof

Publications (1)

Publication Number Publication Date
LU503088B1 true LU503088B1 (en) 2023-05-23

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Country Status (1)

Country Link
LU (1) LU503088B1 (en)

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