6—anchorage zone cracking in prestressed concrete

Ngày tải lên: 14/11/2014, 11:10

... stress in concrete and steel ring According to the test set up, the two rings are constantly in contact and as the concrete ring dies, strain gages monitor the steel ring strain In the finite ... of concrete, the cracking is earlier and area of cracking is near the inner surface of concrete ring References American Concrete Institute (ACI) Committee 209R-92 Prediction of Creep, Shrinkage, ... Modeling of the ring test Finite element modeling of the ring specimens using ANSYS software were modeled by cubic threedimensional as shown in Fig The elements of steel ring and concrete ring...

Ngày tải lên: 21/07/2014, 17:21

... reinforcement in the form of transverse prestressing to control cracking in anchorage zones where the prestressing forces are large 4 .6—Anchorage- zone cracking in prestressed concrete Longitudinal ... shrinkage-compensating concrete in minimizing or preventing shrinkage cracking of exposed concrete surfaces, it is important that positive and uninterrupted water curing (wet covering or ponding) ... found in ACI 209R Cracking due to drying shrinkage can never be eliminated in most structures This chapter covers cracking of hardened concrete due to drying shrinkage, factors influencing shrinkage,...

Ngày tải lên: 24/10/2014, 15:46

... steel -concrete interfacial behaviors including: a) Continuous steel -concrete interfacial connection; b) Discrete steel -concrete interfacial connection; c) Combination of continuous and discrete interfacial ... stress in steel Tensile stress in steel Compressive stress in concrete Critical buckling stress Separation in the direction of traction; In DCB testing, opening of specimen crack at load point Crack ... retrofitting of reinforced concrete structures The reinforced concrete beam in dated infrastructures may be found to be insufficient to serve unpredicted loads This is common in bridges to be...

Ngày tải lên: 08/09/2015, 17:47

Ngày tải lên: 12/10/2016, 18:39

... above investigation, integration is tentatively interpreted as an act or a process of joining or combining something with something else The integrated approach is a way of perceiving and solving ... play in the different phases of the systems evaluation framework These phases include the following activities: defining public concern, determining multiple issues, defining measurable indicators, ... develop, are: i) judging the trustworthiness of the model according to the quality of its design in performing a given task, and ii) using the information (experience) obtained from the interactions...

Ngày tải lên: 06/11/2012, 10:35

... Therefore, the increment of cable strain is defined by using inverse matrix operation as: {Δε s } = [M ]−1 [N ]{d } (6.12) Once the increment of cable strain is obtained, the remaining procedure ... that before cracking (approximately 120.0 kN), the stress in the prestressing cable shows only slight increase with increasing the applied loads However, after cracking, it significantly increases ... prestressing force at the initial prestressing stage in order to compare the increase in the load capacity of beam At the initial prestressing stage, the cables were stressed approximately in the...

Ngày tải lên: 07/11/2012, 11:04

... prestressed Fully prestressed beams contain only prestressing cables, whereas partially prestressed beams contain bonded non -prestressed reinforcement in addition to the prestressing cables in ... deformation in the prestressing cable and adjacent concrete over the entire length of the member must be considered in determining the increase of strain in the prestressing cable at ultimate In this ... the concrete and the prestressing cables, all the prestressed concrete beams can be mainly divided into two groups, namely, prestressed concrete beams with bonded cables and prestressed concrete...

Ngày tải lên: 07/11/2012, 11:04

... using registers in your code? Answer: The observed results suggest that storing some variables in a register vs in memory may or may not impact performance In particular, storing a, b, and c in ... the code into several files: main.c, dict.c, and dict.h The contents of these files are described briefly below main.c: dict.c: #include #include #include "dict.h" int main() { ... while storing n in a register improves performance by a factor of Problem 3.2 We are writing a simple searchable dictionary using modular programming First, the program reads a file containing words...

Ngày tải lên: 25/04/2013, 08:07

... − BT: a/ Tạo thư mục sau: b/ Đổi tên TINHOC6 thành THCSBQ c/ Đổi tên WINDOWS thành GIAOVIEN d/ Đổi tên WINWORD thành HOCSINH e/ Xóa thư mục THCSBQ Rót kinh nghiƯm giê d¹y: ... An Thái Giáo án tin học -  - HS: Quan s¸t vÝ dơ trªn m¸y chiÕu tƯp t¬ng øng VD: §êng dÉn ®Õn tƯp tinhoc6.doc lµ: D:\hoctap\montin\tinhoc.doc §êng dÉn ... ®êng dÉn? Gi¶ sư tƯp tinhoc6.doc ®ỵc chøa th mơc TINHOC, th mơc SOFTWARE ỉ D H·y viÕt ®êng dÉn ®Õn tƯp tinhoc6.doc? Bµi míi Néi dung Ho¹t ®éng 1: Mµn h×nh lµm viƯc chÝnh cđa Windows a> Mµn h×nh...

Ngày tải lên: 18/10/2013, 19:11

... include enterprise administrators, administrative group administrators, and recipient administrators (QWHUSULVH#$GPLQLVWUDWRUV# Windows 2000 installs default groups in the Builtin container in ... 2000: „# Computers running Windows 95 or Windows 98 „# Computers running Windows NT® Workstation version 3.51 or 4.0 „# Computers running Windows 2000 „# Computers running Windows for Workgroups ... will be participating in online meetings When a remote user initiates an online meeting from within Outlook, the local user’s IP address will be returned to the remote user making the request This...

Ngày tải lên: 21/12/2013, 05:18

... communication working using OSPF as the routing protocol 2-6 CCNA 3: Switching Basics and Intermediate Routing v 3.0 - Lab 2.3.6 Copyright  2003, Cisco Systems, Inc Step Verify connectivity a Ping from ... winipcfg If running Windows NT/2000/XP, check by using the ipconfig command in a DOS window b At this point the workstations will not be able to communicate with each other The following steps will ... CCNA 3: Switching Basics and Intermediate Routing v 3.0 - Lab 2.3.6 Copyright  2003, Cisco Systems, Inc f Can the loopback interface be pinged? g All of these pings should...

Ngày tải lên: 21/12/2013, 19:15

... retrieved using cookies We have split the code into three subroutines init( ) initializes global variables and parses incoming data print_header( ) prints the HTTP headers, including the cookie ... copying of large strings when passing them to subroutines For example, the following code will print the actual value of $long_string: my $long_string = "A" x 10000000; $r->print(\$long_string); ... (nested) subroutine in the text of the warning By observing the code that gets executed, it is clear that increment_counter( ) is a named nested subroutine since it gets defined inside the handler(...

Ngày tải lên: 21/01/2014, 06:20

... determinate and indeterminate beams Hagia Sophia in Constantinople Stress–strain curve for concrete Stress–strain curve for high yield reinforcing steel Beam in bending at working load Beam in bending ... The historical development of reinforced concrete 3.3 General principles of reinforced concrete 3.4 Reinforced concrete in bending 3.5 The cracking of reinforced concrete 3.6 The exothermic reaction ... plates Arching action in beams Arching action in reinforced concrete floor Prestressing of two pinned arch Greek temple Plain concrete beam Centrally prestressed beam Eccentrically prestressed...

Ngày tải lên: 18/02/2014, 18:20

... to find the guidance line from any starting location Implementation of methods to follow the lines in a known environment towards the target, despite line crossings and a random starting point ... Techniques In: Leeming, M.B and Topping, B.H.V (Eds), Innovation in Civil and Construction Engineering Edinburgh: Civil-Comp Ltd, 227-231 (1997) Powell, G., Friedman, L and Gunderson, R., Exploring ... specific interest in virtual laboratories tele-education in engineering He is also the head of the Steinbeis Centre for Technology Transfer ARS Prof Roth worked earlier in the space industry...

Ngày tải lên: 05/03/2014, 15:20

... lipid-binding protein, intestinal 15 kDa protein, ileal bile acid-binding protein and gastrotropin, reflecting the speculations of authors on its intracellular function(s) In vitro binding assays ... according to the tissue from which they were initially isolated, e.g livertype fatty acid-binding protein (L-FABP), brain-type fatty acid-binding protein (B-FABP), intestinal-type fatty acid-binding ... Intracellular lipid-binding proteins and their genes Annu Rev Nutr 17, 277–303 Schaap FG, Van der Vusse GJ & Glatz JFC (2002) Evolution of the family of intracellular lipid binding proteins in...

Ngày tải lên: 07/03/2014, 06:20

... ‘tion’: pre’vention, ‘nation ‘sion’: in vasion, dis’cussion ‘ic’: po’etic, eco’nomic ‘ical’: ‘logical, eco’nomical ‘ance’: im’portance, ‘distance ‘ious’: in dustrious, vic’torious Đồng thời, ... ‘dictionary, i’maginary Những danh từ tính từ có hai âm tiết, trọng âm thường rơi vào âm tiết thứ nhất: Ví dụ: Nound: ‘record , ‘flower, ‘valley, ‘children Adjective: ‘current, ‘instant, ‘happy ... ‘valley, ‘children Adjective: ‘current, ‘instant, ‘happy Trường hợp ngoại lệ: ca’nal, de’sire, ‘ma’chine, i’dea, po’lice Những động từ có hai âm tiết, trọng tâm thường rơi vào âm tiết thứ hai: Ví dụ:...

Ngày tải lên: 10/03/2014, 16:20

Ngày tải lên: 14/03/2014, 12:03

... after induction and lysed by ultrasonication The cell extract was obtained by centrifugation at 20 000 g for 30 at °C Binding of the fusion proteins to chitin beads via the intein/ chitin binding ... caused by specific insertion mutants are shown in descending order below the restriction map A flag indicates the putative promoter The horizontal lines show the DNA fragments inserted into pMCL210 ... neighbouring phosphate groups affect the coupling constant [32,33] Determining the absolute configuration of the talosyl residue in the GDP-6-deoxytalose by GC/MS Based on the coupling constants in...

Ngày tải lên: 17/03/2014, 10:20