TWI735180B

TWI735180B - Angle shear force connector

Info

Publication number: TWI735180B
Application number: TW109108181A
Authority: TW
Inventors: 陳正誠; 吳品達
Original assignee: 國立臺灣科技大學
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2021-08-01
Also published as: TW202134508A

Abstract

A corner shear force connector is provided by a corner shear force connector at a corner of a steel pipe column. With the corner shear force connector and the corner of the steel pipe column, a high-bundle effect on a concrete is provided. Efficiently transmit the strength of the steel pipe column to the concrete, so that the corner shear force connector can not only exert a large shear strength under a small amount of slip, but also have a very high ultimate strength, the effect of shear force is much higher than the conventional shear nail. In addition, the corner shear force connector can not only solve the problem that the conventional shear nail is difficult to apply to the steel pipe column, but also the efficiency of shear force transmission is much higher than the conventional shear nail

Description

角隅剪力連接器Corner Shear Connector

本發明係一種角隅剪力連接器，尤指一種將一角隅剪力連接器設置於一鋼管柱之角隅處，藉由該角隅剪力連接器與該鋼管柱角隅對一混凝土的高圍束效果，有效率的將該鋼管柱之力量傳遞至該混凝土，令該角隅剪力連接器不但在較小的滑動量下，即可發揮很大的剪力傳遞強度，且極限強度也甚高，傳遞剪力的效果遠高於習用之剪力釘。The present invention relates to a corner shear connector, in particular to a corner shear connector arranged at the corner of a steel tube column, and the corner shear connector and the corner of the steel tube column are opposed to a concrete The high confinement effect effectively transfers the strength of the steel tube column to the concrete, so that the corner shear connector can not only exert great shear transmission strength under a small sliding amount, but also the ultimate strength It is also very high, and the effect of transmitting shear force is much higher than that of conventional shear nails.

按，鋼骨與混凝土或鋼骨與鋼筋混凝土組成之結構桿件，通常稱為合成桿件（composite structure）或鋼骨鋼筋混凝土（steel-reinforced concrete或SRC）桿件，以下簡稱SRC桿件。SRC桿件中，鋼骨與混凝土間通常需要互相傳遞力量，以確保鋼骨與混凝土或鋼骨與鋼筋混凝土可以共同作用。這個互相傳遞的力量主要為剪力，且通常採用剪力釘傳遞該剪力。混凝土填充型箱型柱10內側通常都會設置剪力釘11(如第1圖所示)，即於該混凝土填充型箱型柱10之四柱板內壁上銲接有複數個剪力釘11，藉以傳遞該混凝土填充型箱型柱10與混凝土12間之剪力。According to, structural members composed of steel and concrete or steel and reinforced concrete are usually called composite structures or steel-reinforced concrete (SRC) members, hereinafter referred to as SRC members. In SRC members, steel and concrete usually need to transmit force to each other to ensure that steel and concrete or steel and reinforced concrete can work together. This mutual transfer force is mainly shear force, and shear nails are usually used to transfer the shear force. The inner side of the concrete-filled box-shaped column 10 is usually provided with shear nails 11 (as shown in Figure 1), that is, a plurality of shear nails 11 are welded on the inner wall of the four-pillar slab of the concrete-filled box-shaped column 10, thereby The shear force between the concrete-filled box-shaped column 10 and the concrete 12 is transmitted.

請參閱第2圖所示，係該混凝土填充型箱型柱10之製作過程中，該混凝土填充型箱型柱10之柱板內側完成剪力釘11植銲，並完成柱板之銲接形成一U組的情況。該混凝土填充型箱型柱10製作時，可以先在其柱板上銲上剪力釘11，然後再以角隅銲道將柱板組合成一箱型柱，因此箱型柱內剪力釘11之施作沒有困難。惟，在鋼管柱內剪力釘之施作常遇到困難，其原因如下：Please refer to Figure 2, in the process of making the concrete-filled box-type column 10, the inner side of the column plate of the concrete-filled box-type column 10 is planted and welded with shear nails 11, and the welding of the column plate is completed. The situation of U group. When the concrete-filled box-shaped column 10 is made, shear nails 11 can be welded on the column plate first, and then the column plate can be assembled into a box-shaped column with corner welds. Therefore, the shear nails 11 in the box-shaped column There is no difficulty in implementing it. However, the implementation of shear nails in steel pipe columns often encounters difficulties, the reasons are as follows:

鋼管內填充混凝土之柱桿件稱為混凝土填充型鋼管柱（concrete-filled tube或CFT）桿件，並分成圓形CFT及矩形CFT，在此以矩形CFT桿件為實施主要對象。矩形CFT鋼管之製作方式可分成3種，包括BCR（軋製方鋼管）、單直縫BCP（壓製成型方鋼管）及雙直縫BCP（壓製成型方鋼管）三種；請參閱第3、4圖所示，為3種方形鋼管之斷面示意圖，其中，BCR 21係使用鋼捲211為原料，首先鋼捲211展平成鋼板212，再將鋼板212輥軋成圓筒狀，並採用高週波電阻銲接將圓筒之兩邊銲接213使其成圓管狀，然後將圓管214擠軋成方形鋼管215，形成一BCR 21(如第3、4圖所示)。製作的過程無法施銲剪力釘，製作完成之鋼管內部也沒有足夠的空間進行剪力釘之植銲。The column members filled with concrete in the steel tube are called concrete-filled tube (concrete-filled tube or CFT) members, and are divided into circular CFT and rectangular CFT. Here, rectangular CFT members are the main objects of implementation. The production methods of rectangular CFT steel pipes can be divided into three types, including BCR (rolled square steel pipe), single straight seam BCP (press-formed square steel pipe) and double straight seam BCP (press-formed square steel pipe); please refer to Figures 3 and 4 Shown are the cross-sectional schematic diagrams of 3 types of square steel pipes. Among them, the BCR 21 series uses steel coil 211 as the raw material. First, the steel coil 211 is flattened into a steel plate 212, and then the steel plate 212 is rolled into a cylindrical shape, and high frequency resistance is used. Welding The two sides of the cylinder are welded 213 to form a circular tube, and then the circular tube 214 is extruded into a square steel tube 215 to form a BCR 21 (as shown in Figures 3 and 4). Shear nails cannot be welded during the production process, and there is not enough space inside the finished steel pipe for planting and welding of shear nails.

請參閱第3、5圖所示，而單直縫BCP 22使用一塊鋼板221為原料，首先將鋼板221經4次沖壓成形，然後以1道縱向潛弧銲道銲接222鋼板兩邊組成方形斷面，而形成一單直縫BCP 22，故與上述BCR 21相同，該單直縫BCP 22製作過程亦無法施銲剪力釘，製作完成之鋼管內部也沒有足夠的空間進行剪力釘之植銲。Please refer to Figures 3 and 5, and the single straight seam BCP 22 uses a steel plate 221 as the raw material. First, the steel plate 221 is stamped and formed by 4 times, and then the two sides of the 222 steel plate are welded by a longitudinal submerged arc weld to form a square section. , And a single straight seam BCP 22 is formed, so it is the same as the above-mentioned BCR 21. The production process of this single straight seam BCP 22 cannot be welded with shear nails, and there is not enough space inside the finished steel pipe for plant welding of shear nails. .

請參閱第3、6圖所示，而雙直縫BCP 23使用兩塊鋼板231為原料，先將每塊鋼板231經2次沖壓成ㄇ形斷面，(如第6圖所示)，然後將兩個ㄇ形斷面之鋼板231，以2道縱向潛弧銲道銲接232成方形斷面，而形成一雙直縫BCP 23，(如第3、6圖所示)。該雙直縫BCP 23在每塊鋼板231沖壓成ㄇ形斷面後，可以植銲剪力釘然後再以2道縱向潛弧銲道連接成方形斷面。但是一方面考慮到內側潛弧銲施作所需之空間，設置剪力釘的位置則受到限制，另一方面剪力釘之植銲也比較困難，尤其是ㄇ形斷面側壁之剪力釘植銲困難度提升不少。該雙直縫BCP 23在CFT鋼管的應用可以克服鋼管內側剪力釘無法設置的疑慮，但是困難度比上述該混凝土填充型箱型柱10(如第1、2圖所示)高。整體而言，鋼管柱內側之剪力釘不是無法植銲就是植銲困難度高，因此限制了CFT柱在工程上的使用。又由於鋼管斷面之製作費用比箱型斷面少很多，值得推廣，但是由於剪力釘無法或不易植銲，鋼骨與混凝土間力量之傳遞無法解決，讓鋼管斷面的優點無法充分發揮。Please refer to Figures 3 and 6, and the double straight seam BCP 23 uses two steel plates 231 as raw materials. First, each steel plate 231 is stamped twice into a ㄇ-shaped section (as shown in Figure 6), and then Two ㄇ-shaped cross-section steel plates 231 are welded 232 by two longitudinal submerged arc welding passes to form a square cross-section to form a pair of straight seams BCP 23 (as shown in Figures 3 and 6). After the double straight seam BCP 23 is stamped into a ㄇ-shaped section of each steel plate 231, shear nails can be planted and welded and then connected by two longitudinal submerged arc welds to form a square section. However, on the one hand, considering the space required for internal submerged arc welding, the location of the shear nails is limited. On the other hand, it is difficult to plant and weld the shear nails, especially the shear nails on the side wall of the ㄇ-shaped section. The difficulty of plant welding has increased a lot. The application of the double straight seam BCP 23 in the CFT steel pipe can overcome the doubt that the shear nails cannot be installed inside the steel pipe, but the degree of difficulty is higher than that of the above-mentioned concrete-filled box column 10 (as shown in Figures 1 and 2). On the whole, the shear nails on the inner side of the steel pipe column are either unable to be welded or difficult to be welded, which limits the use of CFT columns in engineering. Also, because the production cost of the steel pipe section is much less than that of the box section, it is worthy of promotion. However, because the shear nails cannot or are not easy to plant and weld, the transmission of force between the steel frame and the concrete cannot be solved, so that the advantages of the steel pipe section cannot be fully utilized. .

由此可見，上述習用物品仍有諸多缺失，實非一良善之設計者，而亟待加以改良。It can be seen that there are still many deficiencies in the above-mentioned conventional items, and they are not a good designer, and urgently need to be improved.

有鑑於此，本案發明人本於多年從事相關產品之製造開發與設計經驗，針對上述之目標，詳加設計與審慎評估後，終得一確具實用性之本發明。In view of this, the inventor of the present case has been engaged in the manufacturing, development and design of related products for many years. Aiming at the above-mentioned goals, after detailed design and careful evaluation, he finally obtained a practical invention.

本發明之目的，在提供一種角隅剪力連接器，係將一角隅剪力連接器設置於一鋼管柱之角隅處，藉由該角隅剪力連接器與該鋼管柱角隅對一混凝土的高圍束效果，有效率的將該鋼管柱之力量傳遞至該混凝土，令該角隅剪力連接器不但在較小的滑動量下，即可發揮很大的剪力傳遞強度，且極限強度也甚高，傳遞剪力的效果遠高於習用之剪力釘。The object of the present invention is to provide a corner shear connector. A corner shear connector is arranged at the corner of a steel pipe column, and the corner shear connector is aligned with the corner of the steel pipe column. The high confinement effect of concrete effectively transfers the strength of the steel tube column to the concrete, so that the corner shear connector can not only exert great shear transmission strength under a small sliding amount, but also The ultimate strength is also very high, and the effect of transmitting shear force is much higher than that of conventional shear nails.

根據上述之目的，本發明之角隅剪力連接器，其主要係包括有：一鋼管柱及至少一作為剪力連接器之鋼板；其中，該鋼管柱之角隅兩側不超過邊長二分之一等距的位置上開設有至少一槽形孔；該鋼板穿設於該槽形孔上，其二末端並連接於該槽形孔處，該鋼管柱內填充滿混凝土，使該鋼板與該鋼管柱之角隅之間形成一角隅混凝土，該鋼板面加上該角隅混凝土面形成一聯合角隅承壓面；藉此，施於該鋼管柱的剪力，經由該槽形孔之連接處傳遞至該鋼板，該鋼板再以承壓的方式傳遞至混凝土，由於該鋼板強度高出混凝土抗壓強度甚多，因此鋼板本身可以傳遞很高的力量；此外，該角隅混凝土受到該鋼板以及角隅處柱板之高度圍束，在此稱為「超圍束角隅混凝土」，其承壓強度可以高出混凝土抗壓強度數倍，且超圍束角隅混凝土與鋼管壁之間產生很大的摩擦力，可將力量傳遞至該鋼板與鋼管壁，該鋼板面加上超圍束角隅混凝土面合稱為聯合角隅承壓面，以承壓之方式傳遞剪力，與聯合角隅承壓面接觸的混凝土亦位於鋼管角隅處，所受到的圍束亦相當大，承壓強度也高於混凝土抗壓強度甚多，因此每一個角隅剪力連接器可以傳遞相當高的剪力，且聯合角隅承壓面的面積越大所能傳遞的剪力也就以近乎等比例的方式增大。According to the above-mentioned purpose, the corner shear connector of the present invention mainly includes: a steel pipe column and at least one steel plate as a shear connector; wherein the two sides of the corner of the steel pipe column do not exceed the length of two sides. At least one slot-shaped hole is opened at one-half equidistant position; the steel plate penetrates the slot-shaped hole, and its two ends are connected to the slot-shaped hole. The steel pipe column is filled with concrete to make the steel plate A corner concrete is formed between the corner of the steel pipe column and the steel plate surface plus the corner concrete surface to form a joint corner bearing surface; thereby, the shear force applied to the steel pipe column passes through the slotted hole The connection point is transferred to the steel plate, and the steel plate is transferred to the concrete in a pressure-bearing manner. Because the strength of the steel plate is much higher than the compressive strength of the concrete, the steel plate itself can transmit high strength; in addition, the corner concrete is subjected to The height of the steel plate and the column slab at the corner is called "super-contoured corner concrete". Its compressive strength can be several times higher than the compressive strength of concrete, and it exceeds the confined corner concrete and steel tube wall. A large friction force is generated between the steel plate and the steel pipe wall, and the steel plate surface plus the super-enclosed corner concrete surface is collectively called the joint corner bearing surface, which transmits the shear force in a pressure-bearing manner , The concrete in contact with the pressure-bearing surface of the joint corner is also located at the corner of the steel tube, and the beam is also quite large, and the compressive strength is much higher than the compressive strength of the concrete. Therefore, each corner shear connector can Very high shear force is transmitted, and the larger the area of the pressure-bearing surface of the joint corner, the shear force that can be transmitted increases in a nearly equal proportion.

為便貴審查委員能對本發明之目的、形狀、構造裝置特徵及其功效，做更進一步之認識與瞭解，茲舉實施例配合圖式，詳細說明如下：In order to facilitate your reviewer to have a further understanding and understanding of the purpose, shape, features and effects of the structure of the present invention, a detailed description is given as follows:

本發明乃有關一種「角隅剪力連接器」，請參閱第7、8圖所示，本發明之角隅剪力連接器，其主要係包括有：一鋼管柱30及至少一作為剪力連接器之鋼板40。The present invention relates to a "corner shear connector". Please refer to Figures 7 and 8. The corner shear connector of the present invention mainly includes: a steel pipe column 30 and at least one as a shear force Connector steel plate 40.

其中，該鋼板40二末端係連接於該鋼管柱30之角隅內兩側不超過邊長二分之一等距的位置上，而形成一角隅剪力連接器，該鋼管柱30內填充滿混凝土33，使該鋼板40與該鋼管柱30之角隅之間形成一角隅混凝土34，該鋼板40面加上該角隅混凝土34面形成一聯合角隅承壓面。Wherein, the two ends of the steel plate 40 are connected to the inner corners of the steel pipe column 30 at positions that are not more than one-half of the side length equidistant to form a corner shear connector, and the steel pipe column 30 is filled with The concrete 33 forms a corner concrete 34 between the steel plate 40 and the corner of the steel pipe column 30. The steel plate 40 surface and the corner concrete 34 surface form a joint corner bearing surface.

藉上述構件之組成，施於該鋼管柱30的剪力，經由該槽形孔31、32之連接處傳遞至該鋼板40，該鋼板40再以承壓的方式傳遞至該混凝土33，由於該鋼板40強度高出該混凝土33抗壓強度甚多，因此該鋼板40本身可以傳遞很高的力量。With the composition of the above-mentioned components, the shear force applied to the steel pipe column 30 is transmitted to the steel plate 40 through the joint of the slot-shaped holes 31 and 32, and the steel plate 40 is transferred to the concrete 33 in a pressure-bearing manner. The strength of the steel plate 40 is much higher than the compressive strength of the concrete 33, so the steel plate 40 itself can transmit high strength.

此外，該角隅混凝土34受到該鋼板40以及角隅處柱板之高度圍束，在此稱為「超圍束角隅混凝土」，其承壓強度可以高出該混凝土33抗壓強度數倍，且超圍束角隅混凝土與鋼管壁之間產生很大的摩擦力，可將力量傳遞至該鋼板40與鋼管壁，該鋼板40面加上超圍束角隅混凝土面合稱為聯合角隅承壓面，以承壓之方式傳遞剪力，與聯合角隅承壓面接觸的該混凝土33亦位於鋼管角隅處，所受到的圍束亦相當大，承壓強度也高於該混凝土33抗壓強度甚多，因此每一個角隅剪力連接器可以傳遞相當高的剪力，且聯合角隅承壓面的面積越大所能傳遞的剪力也就以近乎等比例的方式增大。In addition, the corner concrete 34 is bound by the steel plate 40 and the height of the column slab at the corner, which is referred to herein as "super-enclosed corner concrete", and its compressive strength can be several times higher than the compressive strength of the concrete 33. , And a great friction force is generated between the super-contained corner concrete and the steel tube wall, which can transmit force to the steel plate 40 and the steel tube wall. The steel plate 40 surface plus the super-contained corner concrete surface is collectively called the joint angle The corner bearing surface transmits shear force in a pressure-bearing manner. The concrete 33 in contact with the joint corner bearing surface is also located at the corner of the steel tube, and the confinement received is quite large, and the bearing strength is also higher than that of the concrete. 33 There are many compressive strengths, so each corner shear connector can transmit a relatively high shear force, and the larger the area of the joint corner bearing surface, the greater the shear force that can be transmitted in a nearly proportional manner. .

復請參閱第7、8圖所示，該鋼板40二末端係以銲接方式連接於該鋼管柱30之角隅內兩側不超過邊長二分之一等距的位置上。Please refer to Figures 7 and 8 again. The two ends of the steel plate 40 are welded to the inner corners of the steel pipe column 30 at positions that are not more than one-half of the side length equidistant.

請再參閱第7、8、18、19圖所示，該鋼管柱30之角隅兩側不超過邊長二分之一等距的位置上開設有至少一槽形孔31、32。Please refer to Figures 7, 8, 18, and 19 again, at least one slot-shaped hole 31, 32 is provided on both sides of the corners of the steel pipe column 30 not more than one-half of the side length.

該鋼板40穿設於該槽形孔31、32上，其二末端並連接於該槽形孔31、32處，而形成一角隅剪力連接器，該鋼管柱30內填充滿混凝土33，使該鋼板40與該鋼管柱30之角隅之間形成一角隅混凝土34，該鋼板40面加上該角隅混凝土34面形成一聯合角隅承壓面。The steel plate 40 passes through the slot-shaped holes 31, 32, and its two ends are connected to the slot-shaped holes 31, 32 to form a corner shear connector. The steel pipe column 30 is filled with concrete 33 to make A corner concrete 34 is formed between the steel plate 40 and the corner of the steel pipe column 30, and the steel plate 40 surface and the corner concrete 34 surface form a joint corner bearing surface.

復請參閱第7、8、18、19圖所示，該鋼板40可為一直線形鋼板、一弧形鋼板或一四分之一圓弧形鋼板。Please refer to Figures 7, 8, 18, and 19, the steel plate 40 can be a straight steel plate, an arc steel plate or a quarter circular arc steel plate.

復請參閱第7、8、18、19圖所示，該鋼板40二末端可以銲接方式連接於該槽形孔31、32處。Please refer to Figures 7, 8, 18, and 19, the two ends of the steel plate 40 can be welded to the slot-shaped holes 31 and 32.

復請參閱第7、8、18、19圖所示，該鋼管柱30可為一BCR（軋製方鋼管）、一單直縫BCP（壓製成型方鋼管）、一雙直縫BCP（壓製成型方鋼管）或一混凝土填充型箱型柱。Please refer to Figures 7, 8, 18 and 19. The steel pipe column 30 can be a BCR (rolled square steel pipe), a single straight seam BCP (press-formed square steel pipe), or a double straight seam BCP (press-formed square pipe). Square steel tube) or a concrete-filled box column.

請參閱第9、10圖所示，該鋼板40之角隅剪力連接器傳遞剪力的效果，可以由混凝土33、52推出（concrete push-out）試驗檢驗之，以下以一個設置剪力釘51之試體以及一個設置該鋼板40(角隅剪力連接器)試體之推出試驗，來探討角隅剪力連接器傳遞剪力的效果。其中，ST-5d試體在鋼管50內側設置4支剪力釘51，試體斷面及垂直剖面分別如第9及10圖所示。剪力釘51直徑為13 mm，長度65 mm為直徑的5倍，剪力釘51設置在離試體下端150 mm之鋼管50壁寬度中央，剪力釘51乃自試體端部以手銲的方式銲接在鋼管50上。進行載重試驗時，載重施加於鋼管50上端而下端反力則由混凝土承擔（如第10圖所示），試驗時量測載重P(單位：kN)及混凝土與鋼管之相對滑動量△(單位：mm)。Please refer to Figures 9 and 10, the shear force transmission effect of the corner shear connector of the steel plate 40 can be tested by the concrete push-out test of 33 and 52. The following is one set of shear nails The test body of 51 and the push-out test of a test body with the steel plate 40 (corner shear connector) are used to explore the effect of the corner shear connector on the transfer of shear force. Among them, the ST-5d specimen is provided with 4 shear nails 51 inside the steel pipe 50, and the cross-section and vertical section of the specimen are shown in Figures 9 and 10, respectively. The diameter of the shear nail 51 is 13 mm, and the length of 65 mm is 5 times the diameter. The shear nail 51 is set at the center of the wall width of the steel pipe 50 150 mm away from the lower end of the test body. The shear nail 51 is hand welded from the end of the test body. It is welded to the steel pipe 50 in the same way. During the load test, the load is applied to the upper end of the steel pipe 50 and the reaction force at the lower end is borne by the concrete (as shown in Figure 10). During the test, the load P (unit: kN) and the relative sliding amount between the concrete and the steel pipe △ (unit : Mm).

請參閱第11、12圖所示，而另一試體：PL-CR試體，在鋼骨30 四個角隅處分別設置一個直線形鋼板40(角隅剪力連接器)試體（簡稱角隅鋼板），其斷面及垂直剖面分別(如第11及12圖所示) 。角隅鋼板厚度為12 mm、寬度為70 mm、長度為50 mm。鋼板斷面加上銲道的面積與剪力釘之投影面積基本上相同，至於聯合角隅承壓面積則為81.0 cm2。載重之施加與數據之量測與ST-5d試體相同。兩個試體所使用的鋼管來自同一支鋼管30、50，鋼材之降伏應力為3.94 tf/cm2，抗拉強度為4.42 tf/cm2；混凝土33、52也使用同一車預拌混凝土，載重試驗進行當日混凝土的抗壓強度為226 kgf/cm2；角隅鋼板之降伏應力為2.47 tf/cm2，抗拉強度為3.96 tf/cm2。Please refer to Figures 11 and 12, and the other test body: PL-CR test body. A straight steel plate 40 (corner shear connector) test body (abbreviated as Corner steel plate), its cross-section and vertical section respectively (as shown in Figures 11 and 12). The corner steel plate has a thickness of 12 mm, a width of 70 mm, and a length of 50 mm. The area of the section of the steel plate plus the weld bead is basically the same as the projected area of the shear nail, and the bearing area of the joint corner is 81.0 cm2. The application of load and the measurement of data are the same as those of the ST-5d specimen. The steel pipes used in the two specimens are from the same steel pipes 30 and 50, the yield stress of the steel is 3.94 tf/cm2, and the tensile strength is 4.42 tf/cm2; the concrete 33 and 52 also use the same car ready-mixed concrete, and the load test is carried out. The compressive strength of the concrete on that day was 226 kgf/cm2; the yield stress of the corner steel plate was 2.47 tf/cm2, and the tensile strength was 3.96 tf/cm2.

兩個試體在混凝土推出試驗完成後，得到的載重(P(單位：kN))-滑動量(△(單位：mm))曲線(如第13圖所示)，其中實線為ST-5d試體，而虛線為PL-CR試體；相較於剪力釘51試體ST-5d，角隅剪力連接器試體PL-CR在加載早期即發展出很高的強度，在滑動量等於5 mm的時候，剪力釘51試體發揮出29.5噸之強度，而角隅剪力連接器試體則可以發展出108噸，為剪力釘51試體之3.7倍。就最大強度而言，剪力釘51試體在滑動量等於12.3 mm時發展出最大強度46.7噸，而角隅剪力連接器試體在滑動量等於32 mm時，強度達130噸，為剪力釘51試體的2.8倍，且強度仍然在爬升中。試驗結果顯示直線形角隅剪力連接器可以有效傳遞剪力，且在滑動量很小的時候就可以發揮很高的強度。The load (P (unit: kN))-sliding amount (△ (unit: mm)) curve obtained after the concrete push-out test of the two specimens is completed (as shown in Figure 13), where the solid line is ST-5d The test body, and the dotted line is the PL-CR test body; compared with the shear nail 51 test body ST-5d, the corner shear connector test body PL-CR develops a very high strength in the early stage of loading, and the amount of sliding is When it is equal to 5 mm, the strength of the shear nail 51 specimen is 29.5 tons, while the corner shear connector specimen can develop 108 tons, which is 3.7 times that of the shear nail 51 specimen. As far as the maximum strength is concerned, the shear nail 51 specimen develops a maximum strength of 46.7 tons when the sliding amount is equal to 12.3 mm, while the corner shear connector specimen has a strength of 130 tons when the sliding amount is equal to 32 mm. The strength nail 51 test body is 2.8 times, and the strength is still climbing. The test results show that the linear corner shear connector can effectively transmit the shear force, and can exert high strength when the amount of sliding is small.

復請參閱第7、8圖所示，該鋼板40(角隅剪力連接器)除了可以是一直線形鋼板外也可以是一弧形鋼板或一四分之一圓弧形鋼板，且效果相當，請參閱第14、15圖所示，以下以2個試體的混凝土33推出試驗說明之。其中，STR試體之斷面如第14圖所示，採用直線形角隅剪力連接器，聯合承壓面之面積為141 cm2；而另一試體：ARC試體之斷面如第15圖所示，採用四分之一圓弧之弧形角隅剪力連接器，聯合承壓面之面積為138 cm2。兩個試體的剖面類似第12圖所示者。兩個試體所使用的鋼管來自同一支鋼管30，鋼材之降伏應力為4.81 tf/cm2，抗拉強度為5.56 tf/cm2；混凝土33也使用同一車預拌混凝土，載重試驗進行當日混凝土的抗壓強度為226 kgf/cm2；直線形角隅鋼板之降伏應力為3.60 tf/cm2，抗拉強度為5.29 tf/cm2；弧形角隅鋼板之降伏應力為3.20 tf/cm2，抗拉強度為5.00 tf/cm2。其中試體加載方式如第12圖所示者。兩個試體在混凝土33推出試驗完成後，得到的載重-滑動量P(單位：tf)-△ (單位：mm)曲線如第16圖所示，其中實線為STR試體、虛線為ARC試體。兩個試體的聯合承壓面積幾乎相同（STR為141 cm2、ARC為138 cm2），而兩個試體的P-△曲線非常的接近，顯示只要聯合承壓面積相同，直線形與弧形剪力連接器傳遞剪力的性能相當。Please refer to Figures 7 and 8, the steel plate 40 (corner shear connector) can be a straight steel plate, an arc steel plate or a quarter-circular arc steel plate, and the effect is equivalent. Please refer to Figures 14 and 15. The following is an explanation of the test with two specimens of concrete 33. Among them, the cross-section of the STR specimen is shown in Figure 14, with a straight corner shear connector, and the area of the combined pressure-bearing surface is 141 cm2; and the other specimen: the cross-section of the ARC specimen is shown in the 15th As shown in the figure, a quarter-arc arc corner shear connector is used, and the area of the joint bearing surface is 138 cm2. The cross-sections of the two specimens are similar to those shown in Figure 12. The steel pipes used in the two specimens are from the same steel pipe 30, the yield stress of the steel is 4.81 tf/cm2, and the tensile strength is 5.56 tf/cm2; the concrete 33 also uses the same car of ready-mixed concrete. The compressive strength is 226 kgf/cm2; the yield stress of the straight corner steel plate is 3.60 tf/cm2, and the tensile strength is 5.29 tf/cm2; the yield stress of the curved corner steel plate is 3.20 tf/cm2, and the tensile strength is 5.00 tf/cm2. The sample loading method is shown in Figure 12. After the concrete 33 push-out test is completed for the two specimens, the load-sliding amount P (unit: tf)-△ (unit: mm) curve obtained is shown in Figure 16, where the solid line is the STR specimen and the dashed line is the ARC Test body. The joint bearing area of the two specimens is almost the same (STR is 141 cm2, ARC is 138 cm2), and the P-△ curves of the two specimens are very close, indicating that as long as the joint bearing area is the same, the linear and arc shapes The shear connector has the same performance of transferring shear force.

請參閱第17圖所示，將21座含角隅剪力連接器試體之試驗結果，進行試驗數據分析，可以建立一個簡化之強度評估公式，

式(1)。其中

為聯合承壓面積、

為鋼管角隅內表面積（如

(R-1)＋4]Bt 式(2) 計算，R為鋼管角隅外緣彎轉半徑、B為鋼管寬度）、

為混凝土抗壓強度、

為鋼管厚度。將試體之試驗值除以由式(1)求得之強度評估值，可以得到強度比，如第17圖所示為21個試體強度比之分佈情況。由第17圖所示，可以看出所有試體之強度比皆大於1，顯示式(1)是偏保守，可以用於角隅剪力連接器之設計。 Please refer to Figure 17, the test results of 21 specimens with corner shear connectors are analyzed and a simplified strength evaluation formula can be established by analyzing the test data.

Formula 1). in

Is the joint bearing area,

Is the inner surface area of the corner of the steel pipe (such as

(R-1)＋4] Bt is calculated by formula (2), R is the turning radius of the outer edge of the corner of the steel pipe, and B is the width of the steel pipe),

Is the compressive strength of concrete,

Is the thickness of the steel pipe. Dividing the test value of the test body by the strength evaluation value obtained by formula (1), the intensity ratio can be obtained, as shown in Figure 17 for the distribution of the intensity ratio of 21 test bodies. As shown in Figure 17, it can be seen that the strength ratios of all the specimens are greater than 1, which shows that formula (1) is conservative and can be used in the design of corner shear connectors.

復請參閱第7、8圖所示，該鋼管柱30可為一BCR（軋製方鋼管）、一單直縫BCP（壓製成型方鋼管）、一雙直縫BCP（壓製成型方鋼管）或一混凝土填充型箱型柱。請參閱第18、19圖所示，其中，BCR及單直縫BCP鋼管之製作過程中無法安裝該鋼板40(角隅剪力連接器) ，因此要在鋼管30製作完成後安裝。此時可以在鋼管30角隅兩側適當的位置開槽形孔31、32，然後將弧形角隅剪力連接器由一個槽形孔31穿入鋼管30再由另一個槽形32孔穿出鋼管30，接著再將弧形角隅連接器二末端銲接到鋼管30之槽形孔31、32處，如第18圖所示。此時亦可使用直線形剪力連接器，如第19圖所示，施作方式與弧形角隅剪力連接器類似。Please refer to Figures 7 and 8, the steel pipe column 30 can be a BCR (rolled square steel pipe), a single straight seam BCP (press-formed square steel pipe), a pair of straight seam BCP (press-formed square steel pipe) or A concrete-filled box column. Please refer to Figures 18 and 19, where the steel plate 40 (corner shear connector) cannot be installed during the manufacturing process of BCR and single straight seam BCP steel pipes, so it must be installed after the steel pipe 30 is completed. At this time, slotted holes 31, 32 can be made at appropriate positions on both sides of the corner of the steel pipe 30, and then the arc-shaped corner shear connector can be penetrated from one slotted hole 31 into the steel pipe 30 and then through another slotted 32 hole. Take out the steel pipe 30, and then weld the two ends of the arc-shaped corner connector to the slotted holes 31 and 32 of the steel pipe 30, as shown in Figure 18. At this time, a straight shear connector can also be used. As shown in Figure 19, the application method is similar to the arc corner shear connector.

請參閱第20圖所示，而雙直縫BCP鋼管可以在每塊鋼板沖壓成ㄇ形斷面後，將該鋼板40(角隅剪力連接器)銲在鋼管30角隅處，此時可以使用直線形或弧形角隅剪力連接器，第20圖所示為雙直縫BCP採用直線形角隅剪力連接器的示意圖。Please refer to Figure 20, and the double straight seam BCP steel pipe can be welded to the 30 corner of the steel pipe after each steel plate is stamped into a ㄇ-shaped section. Use straight or curved corner shear connectors. Figure 20 shows a schematic diagram of a double straight seam BCP using a straight corner shear connector.

請參閱第21、22圖所示，而箱型斷面桿件60亦可在角隅兩側適當位置開槽形孔61、62，然後將該鋼板40(弧形角隅剪力連接器)由一個槽形孔61穿入箱型柱再由另一個槽形孔62穿出箱型柱，接著將弧形角隅連接器銲接到箱型柱，如第21圖所示。此時亦可使用直線形剪力連接器，如第22圖所示，施作方式與弧形角隅剪力連接器類似。Please refer to Figures 21 and 22, and the box-shaped cross-section rod 60 can also have slotted holes 61 and 62 at appropriate positions on both sides of the corner, and then the steel plate 40 (arc corner shear connector) One slot-shaped hole 61 penetrates the box-shaped column and another slot-shaped hole 62 passes through the box-shaped column, and then the arc corner connector is welded to the box-shaped column, as shown in Figure 21. At this time, a straight shear connector can also be used. As shown in Figure 22, the application method is similar to the arc corner shear connector.

請參閱第23圖所示，鋼骨結構構架通常會使用鋼筋混凝土（簡稱RC）基礎，此時鋼骨柱桿件承受之力量要先傳遞到RC柱上，然後再傳遞至RC基礎，通常使用一個樓層的高度將鋼骨柱桿件力經由剪力釘傳遞至RC柱，而這個樓層即稱為轉換層，而這個樓層的柱桿件包括了鋼骨以及RC，其斷面類似包覆型SRC斷面70，如第23圖所示。此時，可以採用該鋼板40(角隅剪力連接器)取代剪力釘，角隅剪力連接器一個可能的配置方式如第23圖所示。Please refer to Figure 23. The steel frame structure usually uses reinforced concrete (RC) foundation. At this time, the strength of the steel frame members must be transferred to the RC column first, and then to the RC foundation, usually used The height of a floor transmits the force of the steel-framed column members to the RC column via shear nails, and this floor is called the transfer floor, and the column members of this floor include the steel frame and RC, and the cross-section is similar to the cladding type SRC section 70, as shown in Figure 23. At this time, the steel plate 40 (corner shear connector) can be used to replace the shear nails. A possible configuration of the corner shear connector is shown in FIG. 23.

而該鋼板40(角隅剪力連接器)之尺寸，可以根據所需傳遞之剪力與式(1)決定之。使用式(1)之方式為，將所需傳遞之剪力帶入P，再根據斷面尺寸及所使用之混凝土強度，決定

、

及

之數值，將這些數值帶入式(1)中，然後根據式(1)求取

。求得

後，即可根據幾何關係求得角隅剪力連接器之尺寸及設置位置。 The size of the steel plate 40 (corner shear connector) can be determined according to the shear force to be transmitted and formula (1). The method of using formula (1) is to bring the shear force to be transmitted into P, and then determine according to the section size and the strength of the concrete used

,

and

The values of, put these values into formula (1), and then calculate according to formula (1)

. Get

Then, the size and setting position of the corner shear connector can be obtained according to the geometric relationship.

以上所述，僅為本發明最佳具體實施例，惟本發明之構造特徵並不侷限於此，任何熟悉該項技藝者在本發明領域內，可輕易思及之變化或修飾，皆可涵蓋在以下本案之專利範圍。The above are only the best specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any change or modification that can be easily thought of by anyone familiar with the art in the field of the present invention can be covered. In the following patent scope of this case.

30:鋼管柱 31、32:槽形孔 40:鋼板 33:混凝土 34:角隅混凝土 50:鋼管 51:剪力釘 52:混凝土 60:箱型斷面桿件 61、62:開槽形孔 70:包覆型SRC斷面 30: steel pipe column 31, 32: Slotted hole 40: steel plate 33: Concrete 34: Corner concrete 50: steel pipe 51: Shear nail 52: Concrete 60: Box section rods 61, 62: Slotted hole 70: Covered SRC section

第 1 圖為習用箱型柱內配置剪力釘示意圖。Figure 1 is a schematic diagram of shear nails in conventional box-shaped columns.

第 2 圖為習用箱型柱內配置剪力釘的實例示意圖。Figure 2 is a schematic diagram of an example of a conventional box-shaped column equipped with shear nails.

第 3 圖為習用三種方形鋼管斷面示意圖。Figure 3 is a schematic cross-section of three conventional square steel pipes.

第 4 圖為習用BCR鋼管製作流程示意圖。Figure 4 is a schematic diagram of the production process of conventional BCR steel pipes.

第 5 圖為習用單直縫BCP鋼管沖壓流程示意圖。Figure 5 is a schematic diagram of the conventional single straight seam BCP steel stamping process.

第 6 圖為習用雙直縫BCP鋼管ㄇ形斷面製作流程示意圖。Figure 6 is a schematic diagram of the conventional double straight seam BCP steel pipe U-shaped section production process.

第 7 圖為本發明直線型角隅剪力連接器與鋼管柱之示意圖。Figure 7 is a schematic diagram of the linear corner shear connector and the steel pipe column of the present invention.

第 8 圖為本發明聯合承壓面積之示意圖。Figure 8 is a schematic diagram of the joint bearing area of the present invention.

第 9 圖為本發明ST-5d試體斷面之示意圖。Figure 9 is a schematic diagram of the cross-section of the ST-5d specimen of the present invention.

第10圖為本發明ST-5d試體垂直剖面及加載示意圖。Figure 10 is a schematic diagram of the vertical section and loading of the ST-5d test body of the present invention.

第11圖為本發明PL-CR試體斷面之示意圖。Figure 11 is a schematic diagram of the cross-section of the PL-CR specimen of the present invention.

第12圖為本發明PL-CR試體剖面及加載示意圖。Figure 12 is a schematic diagram of the cross-section and loading of the PL-CR test body of the present invention.

第13圖為本發明ST-5d及PL-CR試體之P-△曲線示意圖。Figure 13 is a schematic diagram of the P-△ curve of the ST-5d and PL-CR specimens of the present invention.

第14圖為本發明STR試體斷面之示意圖。Figure 14 is a schematic diagram of the cross-section of the STR specimen of the present invention.

第15圖為本發明ARC試體斷面之示意圖。Figure 15 is a schematic diagram of the cross-section of the ARC specimen of the present invention.

第16圖為本發明STR及ARC試體之P-△曲線示意圖。Figure 16 is a schematic diagram of the P-△ curve of the STR and ARC specimens of the present invention.

第17圖為本發明21座試體強度比之分佈情況示意圖。Figure 17 is a schematic diagram of the distribution of the intensity ratio of the 21 specimens of the present invention.

第18圖為本發明BCR及單直縫BCP使用弧形角隅剪力連接器之示意圖。Figure 18 is a schematic diagram of the arc corner shear connector used in the BCR and the single straight seam BCP of the present invention.

第19圖為本發明BCR及單直縫BCP使用直線形角隅剪力連接器之示意圖。Figure 19 is a schematic diagram of the BCR and single straight seam BCP of the present invention using a straight corner shear connector.

第20圖為本發明雙直縫BCP使用直線形角隅剪力連接器之示意圖。Figure 20 is a schematic diagram of the double straight seam BCP of the present invention using a straight corner shear connector.

第21圖為本發明箱型斷面桿件使用弧線形角隅剪力連接器之示意圖。Figure 21 is a schematic diagram of the arc-shaped corner shear connector used in the box-shaped cross-section rod of the present invention.

第22圖為本發明箱型柱斷面桿件使用直線形角隅剪力連接器之示意圖。Figure 22 is a schematic diagram of the box-shaped column cross-section member of the present invention using a straight corner shear connector.

第23圖為本發明包覆型SRC柱使用直線形角隅剪力連接器之示意圖。Figure 23 is a schematic diagram of the linear corner shear connector used in the coated SRC column of the present invention.

30:鋼管柱 30: steel pipe column

40:鋼板 40: steel plate

33:混凝土 33: Concrete

34:角隅混凝土 34: Corner concrete

Claims

一種角隅剪力連接器，包括：一鋼管柱；及至少一作為剪力連接器之鋼板，該鋼板二末端係以銲接方式連接於該鋼管柱之角隅內兩側不超過邊長二分之一的位置上，所述位置上開設有至少一槽形孔，且該鋼板穿設於該槽形孔上，將該鋼板由一個槽形孔穿入再由另一個槽形孔穿出，其二末端以銲接方式連接於該槽形孔處，該鋼管柱內填充滿混凝土，使該鋼板與該鋼管柱之角隅之間形成一角隅混凝土，該鋼板面加上該角隅混凝土面形成一聯合角隅承壓面。 A corner shear connector, comprising: a steel pipe column; and at least one steel plate used as a shear connector. In one of the positions, at least one slot-shaped hole is opened in the position, and the steel plate is inserted through the slot-shaped hole, and the steel plate is inserted through one slot-shaped hole and then passed out by another slot-shaped hole, The two ends are connected to the slot-shaped hole by welding. The steel tube column is filled with concrete, so that a corner concrete is formed between the steel plate and the corner of the steel tube column, and the steel plate surface is formed by adding the corner concrete surface A joint corner bearing surface.

如申請專利範圍第1項所述之角隅剪力連接器，其中該鋼板係為一直線形鋼板。 For the corner shear connector described in item 1 of the scope of patent application, the steel plate is a linear steel plate.

如申請專利範圍第1項所述之角隅剪力連接器，其中該鋼板係為一弧形鋼板。 For the corner shear connector described in item 1 of the scope of patent application, the steel plate is an arc-shaped steel plate.

如申請專利範圍第1項所述之角隅剪力連接器，其中該鋼板係為一四分之一圓弧形鋼板。 For the corner shear connector described in item 1 of the scope of patent application, the steel plate is a quarter-arc-shaped steel plate.

如申請專利範圍第1項所述之角隅剪力連接器，其中該鋼管柱係為一BCR鋼管、一單直縫BCP鋼管、一雙直縫BCP鋼管或一混凝土填充型箱型柱。 For the corner shear connector described in item 1 of the scope of patent application, the steel pipe column is a BCR steel pipe, a single straight-seam BCP steel pipe, a double straight-seam BCP steel pipe or a concrete-filled box column.

如申請專利範圍第1項所述之角隅剪力連接器，其中該鋼板在該鋼管柱內所形成之鋼管角隅內表面積A _cor，係透過公式A _cor=[π(R-1)+4]Bt計算出來，其中R為鋼管角隅外緣彎轉半徑、B為鋼管寬度、t為鋼管厚度。 For the corner shear connector described in item 1 of the scope of patent application, the inner surface area A _cor of the steel tube corner formed by the steel plate in the steel tube column is determined by the formula A _cor =[π(R-1)+ 4] Bt is calculated, where R is the turning radius of the outer edge of the corner of the steel pipe, B is the width of the steel pipe, and t is the thickness of the steel pipe.

如申請專利範圍第6項所述之角隅剪力連接器，其中該鋼板面加上該角隅混凝土面所形成之聯合承壓面積A _cn，係透過公式P=

計算出來，其中P為所需傳遞之剪力、f _c '為混凝土抗壓強度、t為鋼管厚度、A _cor為鋼管角隅內表面積。 For the corner shear connector described in item 6 of the scope of patent application, the combined bearing area A _cn formed by the steel plate surface and the corner concrete surface is determined by the formula P=

Calculate, where P is the shear force to be transmitted, f _c ' is the compressive strength of concrete, t is the thickness of the steel pipe, and A _cor is the inner surface area of the corner of the steel pipe.