阅读说明：本技术 一种用于测试组合钢板桩抗弯性能试件的制作和测试方法 (Manufacturing and testing method of test piece for testing bending resistance of combined steel sheet pile ) 是由 钟振 张永杰 胡云进 伍法权 黄睿 包春燕 于 2021-08-17 设计创作，主要内容包括：本发明提供一种用于测试组合钢板桩抗弯性能试件的制作和测试方法,包括连接钢板、U型钢板桩的两个连接勾板和H型钢的上翼缘,所述连接钢板的底部两端分别与两个连接勾板焊接成一体,两个所述连接勾板的锁扣相对设置,所述H型钢的上翼缘的底部两端分别焊接有两个锁扣,所述上翼缘的锁扣与连接勾板的锁扣锁扣配合连接,本发明提供了一种便于进行压力测试的用于测试组合钢板桩抗弯性能试件的制作和测试方法。(The invention provides a method for manufacturing and testing a test piece for testing the bending resistance of a combined steel sheet pile, which comprises a connecting steel sheet, two connecting hook plates of a U-shaped steel sheet pile and an upper flange of H-shaped steel, wherein two ends of the bottom of the connecting steel sheet are respectively welded with the two connecting hook plates into a whole, lock catches of the two connecting hook plates are oppositely arranged, two lock catches are respectively welded at two ends of the bottom of the upper flange of the H-shaped steel, and the lock catch of the upper flange is matched and connected with the lock catch of the connecting hook plate.)

1. A manufacturing and testing method of a test piece for testing the bending resistance of a combined steel sheet pile is characterized by comprising the following steps:

(1) taking H-shaped steel and U-shaped steel sheet piles one by one;

(2) cutting and separating the upper flange of the H-shaped steel;

(3) cutting two connecting hook plates of the U-shaped steel sheet pile, taking a steel sheet matched with the H-shaped steel, oppositely arranging the two connecting hook plates, and welding the two connecting hook plates at the two sides of the steel sheet to form the U-shaped steel sheet pile to be detected;

(4) placing the U-shaped steel plate on a working table for pressure test, and respectively connecting the lock catches on the two sides of the upper flange of the H-shaped steel to the lock catches of the two connecting hook plates to form a steel plate pile to be tested;

(5) pressing the steel sheet pile to be tested by using a pressure tester;

(6) observing the stressed deformation conditions of the upper flange and the connecting hook plate of the H-shaped steel and the deformation conditions of the lock catch;

(7) inputting the measured data into a system and making a corresponding chart for analysis;

(8) and (4) repeating the steps (1) to (7) to obtain a plurality of groups of data, removing data groups with obvious data deviation caused by welding quality problems, and averaging the rest data groups to obtain a final detection result.

2. The manufacturing and testing method of the test piece for testing the bending resistance of the combined steel sheet pile as claimed in claim 1, wherein: the width and the thickness of the upper flange of the H-shaped steel are determined by the type of the adopted H-shaped steel.

3. The manufacturing and testing method of the test piece for testing the bending resistance of the combined steel sheet pile as claimed in claim 1, wherein: the material of the steel plate is the same as that of the selected U-shaped steel sheet pile.

4. The manufacturing and testing method of the test piece for testing the bending resistance of the combined steel sheet pile as claimed in claim 1, wherein: the width of the steel plate is matched with the intercepted upper flange of the H-shaped steel and the two U-shaped steel plate pile hook plates to be connected and matched, and then the width of the steel plate is determined.

5. The manufacturing and testing method of the test piece for testing the bending resistance of the combined steel sheet pile as claimed in claim 4, wherein: the width of the steel plate is determined by claim 4, and the height and the cross-sectional area of the member formed by the steel plate and the connecting hook plate are equal to the cross-sectional area of the U-shaped steel sheet pile, so as to determine the thickness of the steel plate.

Technical Field

The invention relates to the technical field of buildings, in particular to a manufacturing and testing method of a test piece for testing the bending resistance of a combined steel sheet pile.

Background

The steel sheet pile is one of the most common building materials in engineering construction, and has the advantages of high strength, light weight, strong durability, convenient and quick construction, good interchangeability, wide application range, good rigid supporting effect, reusability, long service life and the like; therefore, the method is widely applied to bridge foundation construction. The steel sheet pile cofferdam all alternates a plurality of steel sheet piles according to certain size each other end to end and encloses, and current steel sheet pile kneck all is the tortuous cooperation of simple cross-section, and H shaped steel and U shaped steel pile cooperation are used commonly to be connected, but the U shaped steel sheet pile of above-mentioned structure is when pressure test, because the restriction of structure is very inconvenient, based on above-mentioned problem, this scheme is from this and grows.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a method for manufacturing and testing a test piece for testing the bending resistance of a combined steel sheet pile, which is convenient for pressure testing, and solves the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing and testing method of a test piece for testing the bending resistance of a combined steel sheet pile comprises the following steps:

(1) taking H-shaped steel and U-shaped steel sheet piles one by one;

(2) cutting and separating the upper flange of the H-shaped steel;

(3) cutting two connecting hook plates of the U-shaped steel sheet pile, taking a steel sheet matched with the H-shaped steel, oppositely arranging the two connecting hook plates, and welding the two connecting hook plates at the two sides of the steel sheet to form the U-shaped steel sheet pile to be detected;

(4) placing the U-shaped steel sheet pile to be tested on a pressure testing working table, and respectively connecting the lock catches on the two sides of the upper flange of the H-shaped steel to the lock catches of the two connecting hook plates to form the steel sheet pile to be tested;

(5) pressing the steel sheet pile to be tested by using a pressure tester;

(6) observing the stressed deformation conditions of the upper flange and the connecting hook plate of the H-shaped steel and the deformation conditions of the lock catch;

(7) inputting the measured data into a system and making a corresponding chart for analysis;

(8) and (4) repeating the steps (1) to (7) to obtain a plurality of groups of data, removing data groups with obvious data deviation caused by welding quality problems, and averaging the rest data groups to obtain a final detection result.

(III) advantageous effects

In conclusion, the invention cuts and separates two main bending-resistant components of the H-shaped steel and the U-shaped steel sheet pile, and welds the two main bending-resistant components to form a new testable bending-resistant component, so that the whole structure is convenient to load during pressure test, and bending-resistant tests can be conveniently carried out on irregular steel sheet piles.

Drawings

FIG. 1 is a schematic structural diagram of a test piece manufacturing and testing method for testing bending resistance of a combined steel sheet pile according to the present invention;

FIG. 2 is a connecting structure diagram of a U-shaped steel sheet pile and an H-shaped steel in the prior art;

FIG. 3 is a recombined drawing of a U-shaped steel sheet pile;

FIG. 4 is a view showing the upper flange of the H-beam;

FIG. 5 is a graph showing bending resistance test.

In the figure: 1. a steel plate; 2. an upper flange; 3. locking; 4. and connecting the hook plate.

Detailed Description

Referring to fig. 1 to 5, an embodiment of a method for manufacturing and testing a test piece for testing bending resistance of a composite steel sheet pile according to the present invention will be further described.

A method for manufacturing and testing a test piece for testing the bending resistance of a combined steel sheet pile comprises the steps of taking H-shaped steel and a U-shaped steel sheet pile, cutting and separating an upper flange 2 of the H-shaped steel as shown in figure 4, and then cutting two connecting hook plates 4 of the U-shaped steel sheet pile as shown in step S1 of figure 3;

as shown in step S2 of fig. 3, a steel plate 1 matched with the H-shaped steel is taken;

next, as shown in step S3 of fig. 3, in order to ensure that the upper flange of the H-beam can be better connected with the two connecting hook plates, before welding, the two hook plates are connected with the upper flange of the H-beam, and then welded to form a U-beam steel sheet pile to be measured;

as shown in fig. 5, a U-shaped steel sheet pile to be tested is placed on a pressure testing table, two side latches 3 of an upper flange 2 of H-shaped steel are respectively connected to the latches 3 of two connecting hook plates 4 to form a steel sheet pile to be tested, a pressure tester is used to apply pressure to the formation of the steel sheet pile to be tested, the stress deformation conditions of the upper flange 2 of the H-shaped steel and the connecting hook plates 4 are observed, and the measured data is recorded into a system and a corresponding chart is made for analysis; and repeating the steps to obtain a plurality of groups of data, removing the data groups with obvious data deviation caused by the welding quality problem, and averaging the rest data groups to obtain a final detection result.

The weak point of the combined steel sheet pile is located at the joint of the lock catches 3, in order to test the bending resistance of the lock catches 3 of the combined steel sheet pile, one unit of the combined steel sheet pile is selected from the combined steel sheet pile, two main bending-resistant components of the H-shaped steel and the U-shaped steel sheet pile are cut and separated during testing, and a new testable bending-resistant component is formed by welding, so that the whole structure is convenient to load during pressure testing, and bending resistance tests can be conducted on irregular steel sheet piles conveniently.

The two dimensions in this embodiment are adapted to the practical dimensions so that the two latches 3 can be locked to each other.

The area of the steel plate 1 that this embodiment is preferred and the area of connecting the hook plate 4 equals the area of the larsen IV type steel sheet pile, and the structural strength of the component that steel plate 1 and connecting hook plate 4 weld and form is equivalent with the structure of U shaped steel sheet pile upper end, can correspond larsen IV type steel sheet pile strength to the result that makes the test obtain is more accurate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.